Bibliografie tematiche / Ceramic electrolytes

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Letteratura scientifica selezionata sul tema "Ceramic electrolytes"

Autore: Grafiati

Pubblicato: 5 aprile 2025

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Articoli di riviste sul tema "Ceramic electrolytes"

Kee, Robert J., Huayang Zhu, Sandrine Ricote e Greg Jackson. "(Invited) Mixed Conduction in Ceramic Electrolytes For Intermediate-Temperature Fuel Cells and Electrolyzers". ECS Meeting Abstracts MA2023-02, n. 46 (22 dicembre 2023): 2216. http://dx.doi.org/10.1149/ma2023-02462216mtgabs.

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High-temperature fuel cells and electrolyzers (e.g., T > 700 ˚C) rely on oxide electrolytes such as stabilized cubic zirconia that conduct a single defect, oxygen vacancies. Intermediate-temperature electrochemical cells (e.g., T < 650 ˚C) utilize mixed conducting ceramic electrolytes, that conduct multiple defects. Operating at T < 600 ˚C facilitates lower-cost interconnect materials and balance-of-plant components, but the mixed conductor behavior can reduce fuel cell voltages and lower electrolyzer faradaic efficiencies. Predicting behavior of these mixed conductors, even at open-circuit voltage, requires modeling the coupled transport of the multiple conducting defects in the electrolyte. Detailed models of mixed conductors coupled to porous electrode models can simulate cell performance over a broad range of operating conditions. This presentation highlights models of two types of cells with mixed conducting oxide electrolytes. Firstly, gadolinium-doped ceria (GDC) primarily conducts oxygen vacancies but also some electrons via a reduced-ceria small polaron, but it performs well in intermediate temperature solid-oxide fuel cells [1]. Secondly, yttrium-doped barium zirconates (BZY) primarily conducts protons but also oxygen vacancies and small polarons, which contribute to electronic leakage. Variants of BZY electrolytes perform well in fuel cells and electrolyzers [2-4]. This paper focuses on cell-level models of these mixed-conductors and how to identify favorable regions for high performance in fuel cells and electrolyzers. Zhu, A. Ashar, R.J. Kee, R.J. Braun, G.S. Jackson, “Physics-based model to represent the membrane-electrode assemblies of solid-oxide fuel cells based on gadolinium-doped ceria,” J. Electrochem. Soc., Under revision, 2023. J. Kee, S. Ricote, H. Zhu, R.J. Braun, G. Carins, J.E. Persky, “Perspectives on technical challenges and scaling considerations for tubular protonic-ceramic electrolysis cells and stacks ,” J. Electrochem. Soc. 169:054525 (2022). Zhu, Y. Shin, S. Ricote, R.J. Kee, “Defect incorporation and transport in dense BaZr0.8Y0.2O3-d membranes and their impact on hydrogen separation and compression,” J. Electrochem. Soc., Under revision, 2023. Zhu, S. Ricote, R.J. Kee, “Thermodynamics, transport, and electrochemistry in proton-conducting ceramic electrolysis cells,” in High Temperature Electrolysis, W. Sitte and R. Merkle, Editors, IOP Publishing, 2023.

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He, Binlang, Shenglin Kang, Xuetong Zhao, Jiexin Zhang, Xilin Wang, Yang Yang, Lijun Yang e Ruijin Liao. "Cold Sintering of Li6.4La3Zr1.4Ta0.6O12/PEO Composite Solid Electrolytes". Molecules 27, n. 19 (10 ottobre 2022): 6756. http://dx.doi.org/10.3390/molecules27196756.

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Ceramic/polymer composite solid electrolytes integrate the high ionic conductivity of in ceramics and the flexibility of organic polymers. In practice, ceramic/polymer composite solid electrolytes are generally made into thin films rather than sintered into bulk due to processing temperature limitations. In this work, Li6.4La3Zr1.4Ta0.6O12 (LLZTO)/polyethylene-oxide (PEO) electrolyte containing bis(trifluoromethanesulfonyl)imide (LiTFSI) as the lithium salt was successfully fabricated into bulk pellets via the cold sintering process (CSP). Using CSP, above 80% dense composite electrolyte pellets were obtained, and a high Li-ion conductivity of 2.4 × 10−4 S cm–1 was achieved at room temperature. This work focuses on the conductivity contributions and microstructural development within the CSP process of composite solid electrolytes. Cold sintering provides an approach for bridging the gap in processing temperatures of ceramics and polymers, thereby enabling high-performance composites for electrochemical systems.

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Tronstad, Zachary, e Bryan D. McCloskey. "Ion Conductive High Li⁺ Transference Number Polymer Composites for Solid-State Batteries". ECS Meeting Abstracts MA2024-01, n. 5 (9 agosto 2024): 751. http://dx.doi.org/10.1149/ma2024-015751mtgabs.

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Solid-state electrolytes are a promising field of study to improve the safety and energy density of lithium-based batteries. Composite solid electrolytes seek to leverage both the desirable mechanical properties of polymers and the high conductivity of active ceramic fillers; however, Li+ transport through the composite, and especially the extent of Li+ through the ceramic phase, remains an open question.1, 2 Simulations suggest that decreasing interfacial resistance between polymer and ceramic would promote transport through ceramic particles.1 Our work seeks to improve Li+ transport in the ceramic phase by engineering both polymer and ceramic materials that minimize the interfacial resistance between the two. Traditional polymer electrolytes have a low transference number (~0.15) compared to ceramics (~1), and when combined in composites this mismatch has been suggested as a major contributor to interfacial impedance.3 We explore the effect of the transference number mismatch by using a single-ion conducting polymer poly((trifluoromethane)sulfonamide lithium methacrylate) (PMTFSILi). The Li+ transport in a composite electrolyte with high transference number PMTFSILi is compared with that of a system utilizing a lithium salt. Contaminants on ceramic surface can also contribute to interfacial resistance. We consider how lithium carbonate (Li2CO3) content on the surface of LLZTO (Li6.4La3Zr2Ta0.6O12) affects Li+ transport. Accompanying this study is a detailed description of washing procedures used to clean the LLZTO surface. Titration Mass Spectrometry (TiMS) is used to quantify Li2CO3 content in our ceramic particles and assess the effectiveness of our cleaning procedures. Inductively-coupled plasma mass spectrometry (ICP-MS) data also assists in measuring the impact (Li+ exchange and transition metal dissolution) of various washing procedures (basic, acidic) on the LLZTO particles. Solid-state NMR has proven to be a useful tool in deconvoluting Li+ transport in different phases of composite electrolytes2 and is the primary technique we use to quantify transport in our system. These findings will provide a deeper understanding into the relationship between interfacial resistance and Li+ transport in composite electrolyte systems and shed light on how material choices can better utilize the highly conductive ceramic phase for Li+ transport. Kim, HK., Barai, P., Chavan, K. et al.Transport and mechanical behavior in PEO-LLZO composite electrolytes. J Solid State Electrochem 26, 2059–2075 (2022). https://doi.org/10.1007/s10008-022-05231-w Zheng J., Hu, Y. New Insights into the Compositional Dependence of Li-Ion transport in polymer-ceramic composite electrolytes. ACS Appl. Mater. Interfaces, 10, 4, 4113–4120 (2018). https://doi.org/10.1021/acsami.7b17301 Mehrotra A. et al. Quantifying Polarization Losses in an Organic Liquid Electrolyte/Single Ion Conductor Interface. Electrochem. Soc. 161 A1681 (2014). https://doi.org /10.1149/2.0721410jes

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Lee, Jong-Ho, Junseok Kim, Sihyuk Choi, HO-IL JI, Deok-Hwang Kwon, Sungeun Yang, Kyung Joong Yoon e Ji-Won Son. "Enhanced Sintering of Refractory Protonic Ceramic Electrolyte by Dual Phase Reaction". ECS Meeting Abstracts MA2024-02, n. 48 (22 novembre 2024): 3380. https://doi.org/10.1149/ma2024-02483380mtgabs.

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Proton conducting oxides, commonly used as electrolytes in ceramic electrochemical cells, boast remarkable proton conductivity, facilitating efficient energy conversion. However, their refractory nature presents challenges in achieving the ideal electrolyte structure and properties. Our novel approach utilizes reaction sintering to effectively lower the electrolyte's sintering temperature, resulting in stable and excellent electrolytic properties. This method transforms a two-phase mixture (comprising fast and slow-sintering phases) into a single-phase compound and densifies the electrolyte in a single-step heating cycle. During the reaction sintering process, rapid growth of the fast-sintering phase grains occurs due to its superior sinterability, aided by Ostwald ripening exhibited by the smaller slow-sintering phase. Lowering the sintering temperature preserves the intended initial stoichiometry of the electrolyte material, leading to a significant enhancement in electrochemical performance.

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Luo, Jiajia, Yang Zhong e Guohua Chen. "Preparation, Microstructure and Electrical Conductivity of LATP/LB Glass Ceramic Solid Electrolytes". Journal of Physics: Conference Series 2101, n. 1 (1 novembre 2021): 012081. http://dx.doi.org/10.1088/1742-6596/2101/1/012081.

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Abstract The Li2O-Al2O3-TiO2-P2O5 system glass ceramic solid electrolytes were prepared by adding Li3BO3 (LB) frits. The phase composition, microstructure and electrical properties of glass ceramics were investigated by using X-ray diffraction, scanning electron microscopy and AC impedance spectroscopy. The results show that the principal crystalline phase of all glass ceramic samples was LiTi2(PO4)3. The grain sizes of glass ceramic sample increase with the increase of sintering temperature. When the additive amount of LB is 1wt %, the glass ceramic solid electrolyte sintered at 950 oC shows the highest room-temperature ionic conductivity of 1.9×10−4 S.cm−1, which can be expected to be used in solid-state lithium-ion batteries.

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Fincher, Cole D., Colin Gilgenbach, Christian Roach, Rachel Osmundsen, Brian W. Sheldon, W. Craig Carter, James LeBeau e Yet-Ming Chiang. "Electrochemical Embrittlement Accelerates Dendrite Growth in Ceramic Electrolytes". ECS Meeting Abstracts MA2024-01, n. 38 (9 agosto 2024): 2300. http://dx.doi.org/10.1149/ma2024-01382300mtgabs.

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Although solid-state batteries with metal anodes promise to enable safer, higher energy density batteries, metal protrusions (dendrites) grow when charging faster than a critical current density[1,2]. It is generally believed that dendrites grow when plating-induced stresses exceed that required for fracture of the solid-electrolyte[2–4]. Although the electrolyte's fracture toughness is commonly taken as a constant[2–4], here we show that the effective fracture toughness depends markedly upon the metal deposition current density. Based upon operando birefringence microscopy[5], we directly measure dendrite-induced stresses and obtain the mechanical driving force for failure, as well as the electrolyte fracture toughness. We find that increasing current densities embrittle the solid electrolyte—diminishing the fracture toughness by as much as 70%. Cryogenic Scanning Transmission Electron Microscopy (Cryo-STEM) reveals decomposed electrolyte phases at the dendrite tip. This decomposition is associated with a volume contraction consistent with embrittlement of the electrolyte. All experiments were conducted on the most electrochemically stable Li-ion conducting solid electrolyte (tantalum-doped lithium lanthanum zirconium oxide); the fracture toughness of less stable electrolytes (e.g., agryodites) may be even more susceptible to such embrittlement. The collective results indicate that “electrochemical embrittlement” markedly weakens the electrolyte, enabling dendrite growth—even when such degradation has negligible effect on bulk electrochemical properties. References: Sudworth, J. L., Hames, M. D., Storey, M. A., Azim, M. F. & Tilley, A. R. An analysis and laboratory assessment of Two Sodium Sulfur Cell Designs. Power Sources 4, 1–18 (1972). Sharafi, A., Meyer, H. M., Nanda, J., Wolfenstine, J. & Sakamoto, J. Characterizing the Li–Li7La3Zr2O12 interface stability and kinetics as a function of temperature and current density. J. Power Sources 302, 135–139 (2016). Fincher, C. D. et al. Controlling dendrite propagation in solid-state batteries with engineered stress. Joule 6, 2794-2809 (2022). Porz, L. et al. Mechanism of lithium metal penetration through inorganic solid electrolytes. Adv. Energy Mater. 7, 1701003 (2017). Athanasiou†, C. E., Fincher†, C. D. et al. Operando measurements of dendrite-induced stresses in ceramic electrolytes using photoelasticity. Matter (2023).

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Chen, Xi. "(Invited) Ion Transport and Interface Resistance in Polymer-Based Composite Electrolytes and Composite Cathode". ECS Meeting Abstracts MA2023-01, n. 6 (28 agosto 2023): 983. http://dx.doi.org/10.1149/ma2023-016983mtgabs.

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Solid-state electrolytes are promising to enable the next generation batteries with higher energy density and improved safety. However, each major class of solid electrolytes has intrinsic weaknesses. By combining different classes of solid electrolytes, such as a polymer electrolyte and an oxide ceramic electrolyte, one can potentially overcome the intrinsic weaknesses of each component and develop a composite electrolyte to achieve high ionic conductivity, good mechanical properties, good chemical stability, and adhesion with the electrodes. In this presentation, we show that the interfacial resistance strongly affects the ionic conductivity of polymer/oxide ceramic composite electrolytes, in both the ceramic-in-polymer design where ceramic particles are dispersed within the polymer electrolyte matrix as well as the polymer-in-ceramic design where a three dimensionally interconnected ceramic scaffold is developed. The quantification of the interfacial resistance, the origin of this resistance, as well as the strategies to minimize it are discussed. In a second case, we examine the effect of interfaces on ion transport in a polymer based composite cathode consisting of LiFePO4 (LFP), carbon and poly(ethylene oxide) (PEO) with lithium bis(trifluoromethanesulfonyl)imide (LiTFSI). The structure and dynamics of PEO and lithium ion mobility are studied by small angle neutron scattering and quasi-elastic neutron scattering. The results show that Li ion mobility in PEO/LiTFSI in the composite cathode is only 30% of the bulk electrolyte. This suggests a key bottleneck that limits the rate performance of polymer-based solid-state batteries originates from the sluggish ion transport in the polymer electrolyte confined in the cathode.

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Thangadurai, Venkataraman. "(Invited) Garnet Solid Electrolytes for Advanced All-Solid-State Li Metal Batteries". ECS Meeting Abstracts MA2022-02, n. 47 (9 ottobre 2022): 1759. http://dx.doi.org/10.1149/ma2022-02471759mtgabs.

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These days, Li metal anode-based battery has been arisen as one of the key energy storage technologies due to its high theoretical energy density compared to conventional lithium and sodium ion-based batteries. The present Li-S batteries suffer due to Li dendrite formation and capacity decay due to polysulfide dissolution effect, because of organic electrolytes used in the current research. Solid state (ceramic) electrolytes are promising to prevent Li dendrite growth and polysulfide dissolution. Among different ceramic electrolytes garnet-type structure solid inorganic electrolytes are very promising because of its high lithium-ion conductivity and stability with elemental Li. However, the high interfacial resistance with the electrode is the major bottleneck for the practical use of ceramic electrolyte. Polymer and ceramic hybrid electrolytes exhibit low interfacial resistance. In this talk, we will present development of electrolytes for all-solid-state Li metal batteries.

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Sahore, Ritu, Beth L. Armstrong, Changhao Liu e Xi Chen. "A Three-Dimensionally Interconnected Composite Polymer Electrolyte for Solid-State Batteries". ECS Meeting Abstracts MA2022-02, n. 4 (9 ottobre 2022): 378. http://dx.doi.org/10.1149/ma2022-024378mtgabs.

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High energy density of solid-state batteries requires a thin solid electrolyte separator layer (<30 μm), that can sustain high currents and is easily processable. Polymer-ceramic composite electrolytes can potentially fulfill these requirements by combining the advantages of each type. Ceramic electrolytes have high room-temperature ionic conductivity, transference number of one, and mechanical strength to suppress lithium dendrites, whereas polymer electrolytes are easily processable and can form conformable interfaces with the electrodes. High interfacial-impedance between polymer and ceramic electrolytes make the composites with dispersed ceramic particles less attractive.1 A composite electrolyte architecture where a three-dimensionally interconnected porous ceramic is filled with polymer electrolyte, previously reported by our group, can avoid the interfacial impedance issue, although for thin composite membranes, the interfacial impedance between ceramic framework and excess polymer layer on top/bottom surface will still dominate the overall impedance.2 Here we will present fabrication and electrochemical evaluation of ~150 μm thick composite electrolytes with the above-described 3D-interconnected ceramic architecture. The 3-D framework is obtained by partially sintering Ohara ceramic particle tapes obtained via tape casting, which are filled with curable polymer electrolyte precursors. To obtain a thin (5 μm), uniform polymer electrolyte layer on both surfaces, spray coating was employed. The resulting composite membrane exhibited good dendritic resistance in symmetric cell cycling, improved transference number compared to the polymer electrolytes. We also found significantly improved flexibility of the composite electrolytes with plasticization, however, at the cost of reduction in ionic conductivity due to damage to the ceramic network caused by plasticizer-induced swelling of the cross-linked polymer electrolyte. This research was sponsored by the U.S. Department of Energy (DOE), Office of Energy Efficiency and Renewable Energy for the Vehicle Technologies Office’s Advanced Battery Materials Research Program (Tien Duong, Program Manager). This abstract has been authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan). References Chen, X. C.; Liu, X.; Samuthira Pandian, A.; Lou, K.; Delnick, F. M.; Dudney, N. J., Determining and Minimizing Resistance for Ion Transport at the Polymer/Ceramic Electrolyte Interface. ACS Energy Letters 2019, 4 (5), 1080-1085. Palmer, M. J.; Kalnaus, S.; Dixit, M. B.; Westover, A. S.; Hatzell, K. B.; Dudney, N. J.; Chen, X. C., A three-dimensional interconnected polymer/ceramic composite as a thin film solid electrolyte. Energy Storage Materials 2020, 26, 242-249.

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Ranque, Pierre, Jakub Zagórski, Grazia Accardo, Ander Orue Mendizabal, Juan Miguel López del Amo, Nicola Boaretto, Maria Martinez-Ibañez et al. "Enhancing the Performance of Ceramic-Rich Polymer Composite Electrolytes Using Polymer Grafted LLZO". Inorganics 10, n. 6 (13 giugno 2022): 81. http://dx.doi.org/10.3390/inorganics10060081.

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Solid-state batteries are the holy grail for the next generation of automotive batteries. The development of solid-state batteries requires efficient electrolytes to improve the performance of the cells in terms of ionic conductivity, electrochemical stability, interfacial compatibility, and so on. These requirements call for the combined properties of ceramic and polymer electrolytes, making ceramic-rich polymer electrolytes a promising solution to be developed. Aligned with this aim, we have shown a surface modification of Ga substituted Li7La3Zr2O12 (LLZO), to be an essential strategy for the preparation of ceramic-rich electrolytes. Ceramic-rich polymer membranes with surface-modified LLZO show marked improvements in the performance, in terms of electrolyte physical and electrochemical properties, as well as coulombic efficiency, interfacial compatibility, and cyclability of solid-state cells.

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Più fonti

Tesi sul tema "Ceramic electrolytes"

Soares, Helena Sofia Marques Pinto. "Electrolytes for ceramic oxide fuel cells". Doctoral thesis, Universidade de Aveiro, 2015. http://hdl.handle.net/10773/15883.

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Doutoramento em Nanociências e Nanotecnologia
The main objective of this dissertation is the development and processing of novel ionic conducting ceramic materials for use as electrolytes in proton or oxide-ion conducting solid oxide fuel cells. The research aims to develop new processing routes and/or materials offering superior electrochemical behavior, based on nanometric ceramic oxide powders prepared by mechanochemical processes. Protonic ceramic fuel cells (PCFCs) require electrolyte materials with high proton conductivity at intermediate temperatures, 500-700ºC, such as reported for perovskite zirconate oxides containing alkaline earth metal cations. In the current work, BaZrO3 containing 15 mol% of Y (BZY) was chosen as the base material for further study. Despite offering high bulk proton conductivity the widespread application of this material is limited by its poor sinterability and grain growth. Thus, minor additions of oxides of zinc, phosphorous and boron were studied as possible sintering additives. The introduction of ZnO can produce substantially enhanced densification, compared to the un-doped material, lowering the sintering temperature from 1600ºC to 1300ºC. Thus, the current work discusses the best solid solution mechanism to accommodate this sintering additive. Maximum proton conductivity was shown to be obtained in materials where the Zn additive is intentionally adopted into the base perovskite composition. P2O5 additions were shown to be less effective as a sintering additive. The presence of P2O5 was shown to impair grain growth, despite improving densification of BZY for intermediate concentrations in the range 4 – 8 mol%. Interreaction of BZY with P was also shown to have a highly detrimental effect on its electrical transport properties, decreasing both bulk and grain boundary conductivities. The densification behavior of H3BO3 added BaZrO3 (BZO) shows boron to be a very effective sintering aid. Nonetheless, in the yttrium containing analogue, BaZr0.85Y0.15O3- (BZY) the densification behavior with boron additives was shown to be less successful, yielding impaired levels of densification compared to the plain BZY. This phenomenon was shown to be related to the undesirable formation of barium borate compositions of high melting temperatures. In the last section of the work, the emerging oxide-ion conducting materials, (Ba,Sr)GeO3 doped with K, were studied. Work assessed if these materials could be formed by mechanochemical process and the role of the ionic radius of the alkaline earth metal cation on the crystallographic structure, compositional homogeneity and ionic transport. An abrupt jump in oxide-ion conductivity was shown on increasing operation temperature in both the Sr and Ba analogues.
O principal objetivo deste trabalho é o desenvolvimento e processamento de novos materiais cerâmicos protónicos e iónicos para utilizar como eletrólito das células de combustível de óxidos sólidos (PCFCs e SOFCs, respetivamente). Com este estudo pretende-se, então, desenvolver novas formas de processamento e/ou materiais que apresentem características eletroquímicas atrativas, à base de óxidos cerâmicos nanométricos de pós preparados por processos mecanoquímicos. Existem alguns requisitos que devem ser tidos em conta de forma a garantir a máxima eficiência das PCFCs, destacando-se a elevada condutividade protónica do eletrólito aquando da operação numa gama de temperaturas intermédias, 500-700ºC. Os materiais do tipo “perovskite” foram apresentados como potenciais candidatos a incorporar o eletrólito das PCFCs, sendo o BaZrO3 dopado com 15 mol% de ítrio (BZY) o material base escolhido neste trabalho. Apesar da sua conhecida elevada condutividade protónica, estes materiais apresentam algumas limitações, tais como a fraca sinterabilidade e crescimento de grão. De forma a ultrapassar esta dificuldade, foram adicionadas pequenas quantidades de óxidos de zinco, fósforo e boro que foram estudados como possíveis aditivos de sinterização. A adição de ZnO mostrou melhorias significativas na densificação quando comparado com o material não modificado (BZY), permitindo ainda reduzir a temperatura de sinterização de 1600ºC para 1300ºC. Neste trabalho estudou-se, também, qual o melhor mecanismo de solução sólida para a adição deste aditivo, tendo-se obtido a máxima condutividade protónica nos materiais em que o Zn é intencionalmente introduzido na composição de base de “perovskite”. O P2O5 mostrou ser menos efetivo como aditivo de sinterização. A sua presença foi bastante prejudicial no crescimento de grão, apesar dos elevados níveis de densificação obtidos quando adicionado em quantidades entre 4 e 8 mol%. Porém, a utilização de fósforo mostrou também ser dramática no transporte elétrico, diminuindo a condutividade não só no interior do grão (“bulk”) como nas suas fronteiras. Já a adição de H3BO3 ao BaZrO3 (BZO) mostrou-se muito efetiva para a sinterização deste componente. Contudo, quando adicionado ao sistema dopado com ítria (BaZr0.85Y0.15O3-, BZY), o comportamento é diferente, produzindo níveis deficientes de densificação quando comparado com o BZY puro. Este fenómeno ocorre devido à formação de fases secundárias de borato de bário, cujas temperaturas de fusão são bastante elevadas. Na última parte deste trabalho foi estudado um novo material com condutividade iónica de iões óxido, o (Ba,Sr)GeO3 dopado com K. Neste estudo pretendia-se, não só avaliar a possibilidade de preparar estes pós com recurso a processos mecanoquímicos, como também estudar o papel da variação do raio iónico do catião metálico alcalino-terroso no transporte iónico, homogeneidade composicional e estrutura cristalina. Verificou-se que este material apresenta uma alteração significativa na condutividade iónica com o aumento da temperatura de operação em ambas as composições (Ba e Sr).

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Brugge, Rowena. "Garnet ceramic electrolytes for next-generation lithium batteries". Thesis, Imperial College London, 2018. http://hdl.handle.net/10044/1/63817.

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All-solid-state lithium batteries are of great interest scientifically as a next-generation of electrochemical energy storage devices, owing to their superior safety features and their potential to enable new chemistries to improve performance. The properties of the solid state electrolyte are integral to the overall cell capability – to date the most promising group of materials are the garnet-structured oxides, based on Li7La3Zr2O12 (LLZO), with high room temperature ionic conductivity and a wide electrochemical stability window. There are several aspects in the development of this relatively new material which are yet to be fully understood – these are the focus of this thesis. In this work, processing cubic doped LLZO as a bulk ceramic was investigated and served as a basis for understanding its stability and electrochemical performance; it was optimised to obtain highly dense microstructures under atmosphere-controlled conditions to prevent reaction with moisture. Chemical inhomogeneities in the pellets, especially at the grain boundaries, as investigated by secondary ion mass spectrometry (SIMS) and low energy ion scattering, were shown to be important in determining the transport properties of the electrolyte - in particular the propensity for dendrite formation during cell cycling. It was shown that aluminium-rich grain boundaries in aluminium-doped LLZO favour the formation of inter-granular lithium dendrites (with a 60 % lower critical current density for cell failure) over gallium-doped LLZO. The use of germanium (Ge4+) as a dopant was studied, and shown to stabilise the cubic LLZO phase through substitution of 0.10 moles of Ge at the lithium sub-lattice (at the tetrahedral 24d sites), giving conductivities of the order 10-4 S cm-1 and redox stability over a 4.5 V range with lithium electrodes. Chemical and electrochemical characterisation of the moisture reactivity of gallium-doped LLZO was also carried out, showing a chemically-altered proton-rich region extending to 1.35 micrometres following 30 minutes immersion in H2O at 100 °C and highly reactive grain boundaries. These chemical changes led to a threefold increase in the resistance of both the electrolyte and the interface with lithium electrodes. Chemical and tracer diffusivity of protons were estimated from the diffusion profiles of H+ and D+ obtained by SIMS depth-profiling. A new methodology for measuring macroscopic lithium tracer diffusion in LLZO was introduced, using SIMS depth-profiling and isotopic labelling, in which a number of experimental parameters were varied to optimise the technique. The preliminary results for lithium diffusivity in doped LLZO obtained from this method were compared with values from other methods (impedance and nuclear magnetic resonance) and used to comment on the mechanism for lithium diffusion in the materials.

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Flint, Sara Dianne. "Experimental investigations of doped barium cerate and zirconate ceramic electrolytes". Thesis, University of Exeter, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.262596.

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Hekselman, Aleksandra K. "Crystalline polymer and 3D ceramic-polymer electrolytes for Li-ion batteries". Thesis, University of St Andrews, 2014. http://hdl.handle.net/10023/11950.

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The research work presented in this thesis comprises a detailed investigation of conductivity mechanism in crystalline polymer electrolytes and development of a new class of ceramic-polymer composite electrolytes for Li-ion batteries. Firstly, a robust methodology for the synthesis of monodispersed poly(ethylene oxides) has been established and a series of dimethyl-protected homologues with 13, 15, 17, 28, 29, 30 ethylene oxide repeat units was prepared. The approach is based on reiterative cycles of chain extension and deprotection, followed by end-capping of the oligomeric chain ends with methyl groups. The poly(ethylene oxide) homologues show a superior level of monodispersity to previous work and were subsequently used to prepare crystalline PEO6:LiPF6 polymer electrolytes. A correlation between the number of ether oxygens in the polymer chain and the ionic conductivity of crystalline polymer electrolytes has been established. The structure and dynamics of the monodispersed complexes were studied using solid-state NMR spectroscopy for the first time. The results are in agreement with the proposed mechanism of ionic conductivity in crystalline polymer electrolytes. A new class of composite solid electrolytes for all-solid-state batteries with a lithium metal anode is reported. The composite material consists of a 3D interpenetrating network of a ceramic electrolyte, Li₁.₄Al₀.₄Ge₁.₆(PO₄)₃, and an inert polymer (polypropylene), providing continuous pathways for the ionic transport and excellent mechanical properties. 3D connectivity of this novel composite was confirmed using X-ray microtomography and AC impedance spectroscopy.

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Sagane, Fumihiro. "Studies on ion transfer at interface between ceramic and liquid electrolytes". 京都大学 (Kyoto University), 2008. http://hdl.handle.net/2433/136302.

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Huang, Yuanye [Verfasser], e Joachim [Akademischer Betreuer] Maier. "Proton conducting electrolytes for ceramic fuel cells / Yuanye Huang ; Betreuer: Joachim Maier". Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2020. http://d-nb.info/1221132636/34.

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Denney, Jacob Michael. "The Thermal and Mechanical Characteristics of Lithiated PEO LAGP Composite Electrolytes". Wright State University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=wright1609971094548742.

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Syzdek, Jarosław Sylwester. "Application of modified ceramic powders as fillers for composite polymeric electrolytes based on poly(oxyethylene)". Amiens, 2010. http://www.theses.fr/2010AMIE0102.

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Le premier objectif de cette thèse est l’étude de l’influence de charges inorganiques (additifs) sur les propriétés des électrolytes polymères composites, à base de poly(oxyde d’éthylène) de basses et hautes masses moléculaires. Pour étudier tout les facteurs, nous avons choisi trois oxydes d’aluminium et deux oxydes de titane, distincts de par la taille des grains. Il apparaît exclusivement que les échantillons d’oxyde d’aluminium aux grains de taille micrométrique sont clairement modifiés ; les particules d’oxyde d’aluminium sont plus sensibles au traitement que les oxyde de titane et l’effet est plus marqué pour les particules de taille micrométriques par rapport aux particules nanométriques d’oxyde d’aluminium. Ensuite les poudres (au total 26) étaient utilisées comme charge pour les électrolytes polymères à base de dimétoxy-poly(oxyde d’éthylène) de masse moléculaire moyenne 500 g•mol-1 (liquide à température ambiante) et le poly(oxyde d'éthylène de masse moléculaire moyenne 5•102g•mol-1(solide à température ambiante). Le perchlorate de lithium (LiClO4) a été à chaque fois utilisé comme sel et sa concentration fixée à de 1 mol•kg-1. En résumé – des électrolytes contenant un large panel de poudres ont été étudiés, et il a été montré que les conditions de préparation des électrolytes avec les mêmes matériaux de départ peuvent conduire à l’obtention de matériaux finaux différents. Cela peut expliquer les divergences entre les résultats rapportés dans la littérature ces dernières années. Enfin, l’influence des poudres sur la conductivité et les conditions de son augmentation ont été déterminées
The primary goal of this work was to study the influence of surface-modified inorganic fillers on the properties of composite polymeric electrolytes based on poly(oxyethylene) of both low and high molecular weight. To study all interesting factors we chose three different aluminas and two titanias characterised by different grain sizes. It appeared that only microsized aluminas are readily modified. Less sensitive to the treatment is nano alumina and the least are titanias. Then obtained powders (26 in total) were applied as fillers for polymeric electrolytes based on poly(oxyethylene) of molecular weight aqual to 500 g•mol-1 (liquid at room temperature) and 5•106 g•mol-1 (liquid at room temperature) and 5•106 g•mol-1(solid at room temperature). Lithium perchlorate was used as a salt, its concentration was fixed to be 1 mol•kg-1. In general, a vast population of samples was prepared and it was shown that starting with the same material, one can obtain totally different products. That can explain many of the discrepancies found in the literature published on this subject over the last 20 years. Apart from that a universal procedure of samples preparation was established and conditions of conductivity improvement determined

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Cheng, Ming. "Experimental investigation of the biaxial flexural strength of 8YSZ thin film ceramic substrates as electrolytes". Diss., The University of Arizona, 2002. http://hdl.handle.net/10150/279958.

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Thin ceramic substrates are widely used in engineering applications in modern industry. For example, they are used as molecular filters in fuel cells and solid oxide electrolyzers for oxygen generation. Development of high-reliability substrate materials inevitably requires the accurate characterization of their mechanical properties. The loading conditions in service on the ceramic substrates, such as the solid oxide electrolytes with a thickness of much less than 2 mm, often involve multiaxial bending instead of simple tension or bending. In this dissertation, the ASTM standard piston-on-3-ball experimental technique at ambient temperature is employed to investigate the quasi-static biaxial flexural strength of pure 8YSZ and Al₂O₃ or 3YSZ doped 8YSZ ceramic substrates. Furthermore, this piston-on-3-ball experimental technique is developed into a dynamic piston-on-3-ball technique at ambient temperature and a quasi-static piston-on-3-ball technique at elevated temperatures. Stress distribution functions in the tensile surface of a specimen under piston-on-3-ball loading condition are formulated and used to develop statistical models, which are proven to be in the form of a Weibull distribution function, to describe the biaxial flexural strength behavior of ceramic substrates under piston-on-3-ball loading condition. Analytical modeling was conducted on the dynamic piston-on-3-ball loading configuration. This analytical model can be used to guide the experimental design and judge the validity of experimental results. A new material constitutive model is developed to give a good description of the dynamic strength behavior of ceramic materials under constant stress-rate loading. Quasi-static experiments under piston-on-3-ball loading are conducted at both ambient temperature and elevated temperatures, while dynamic experiments are conducted at ambient temperature. Experimental results, as well as observations from SEM microstructure images and values of fracture toughness measured using a newly developed Vickers micro-indentation toughness technique, lead to a conclusion that no obvious overall improvement to the SYSZ ceramic substrates in the biaxial flexural strength can be observed by adding Al₂O₃ additive with amount up to 3 mol% or 3YSZ additive with amount up to 30 wt%.

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Frenck, Louise. "Study of a buffer layer based on block copolymer electrolytes, between the lithium metal and a ceramic electrolyte for aqueous Lithium-air battery". Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAI041/document.

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La technologie Lithium-air développée par EDF utilise une électrode à air qui fonctionne avec un électrolyte aqueux ce qui empêche l’utilisation de lithium métal non protégé comme électrode négative. Une membrane céramique (LATP:Li1+xAlxTi2-x(PO4)3) conductrice d’ion Li+ est utilisée pour séparer le milieu aqueux de l’électrode négative. Cependant, cette céramique n'est pas stable au contact du lithium, il est donc nécessaire d'intercaler entre le lithium et la céramique un matériau conducteur des ions Li+. Celui-ci devant être stable au contact du lithium et empêcher ou fortement limiter la croissance dendritique. Ainsi, ce projet s'est intéressé à l'étude d'électrolytes copolymères à blocs (BCE).Tout d'abord, l'étude des propriétés physico-chimiques spécifiques de ces BCEs en cellule lithium-lithium symétrique a été réalisée notamment les propriétés de transport (conductivités, nombre de transport), et la résistance à la croissance dendritique du lithium. Puis dans un second temps, l'étude des composites BCE-céramique a été mise en place. Nous nous sommes en particulier focalisés sur l'analyse du transfert ionique polymère-céramique.Plusieurs techniques de caractérisation ont été utilisées telles que la spectroscopie d'impédance électrochimique (transport et interface), le SAXS (morphologies des BCEs), la micro-tomographie par rayons X (morphologies des interfaces et des dendrites).Pour des électrolytes possédant un nombre de transport unitaire (single-ion), nous avons obtenus des résultats remarquables concernant la limitation à la croissance dendritique. La micro-tomographie des rayons X a permis de montrer que le mécanisme de croissance hétérogène dans le cas des single-ion est très différent de celui des BCEs neutres (t+ < 0.2)
The lithium-air (Li-air) technology developed by EDF uses an air electrode which works with an aqueous electrolyte, which prevents the use of unprotected lithium metal electrode as a negative electrode. A Li+ ionic conductor glass ceramic (LATP:Li1+xAlxTi2-x(PO4)3) has been used to separate the aqueous electrolyte compartment from the negative electrode. However, this glass-ceramic is not stable in contact with lithium, it is thus necessary to add between the lithium and the ceramic a buffer layer. In another hand, this protection should ideally resist to lithium dendritic growth. Thus, this project has been focused on the study of block copolymer electrolytes (BCE).In a first part, the study of the physical and chemical properties of these BCEs in lithium symmetric cells has been realized especially transport properties (ionic conductivities, transference number), and resistance to dendritic growth. Then, in a second part, the composites BCE-ceramic have been studied.Several characterization techniques have been employed and especially the electrochemical impedance spectroscopy (for the transport and the interface properties), the small angle X-ray scattering (for the BCE morphologies) and the hard X-ray micro-tomography (for the interfaces and the dendrites morphologies). For single-ion BCE, we have obtained interesting results concerning the mitigation of the dendritic growth. The hard X-ray micro-tomography has permitted to show that the mechanism involved in the heterogeneous lithium growth in the case of the single-ion is very different from the one involved for the neutral BCEs (t+ < 0.2)

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Libri sul tema "Ceramic electrolytes"

Vladimír, Antonín, a cura di. Keramické pevné elektrolyty. Praha: SNTL, 1985.

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Denmark) Risø International Symposium on Materials Science (32nd 2011 Roskilde. Composite materials for structural performance: Towards higher limits : proceedings of the 32nd Risø International Symposium on Materials Science, 5-9 September 2011. A cura di Fæster S. Roskilde, Denmark: Risø National Laboratory for Sustainable Energy, Technical University of Denmark, 2011.

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International Conference on Electroceramics (5th 2011 Sydney). Advanced multifunctional electroceramics: Selected, peer reviewed papers from the 5th International Conference on Electroceramics, December 12-16, 2011, Sydney, Australia. Durnten-Zurich, Switzerland: Trans Tech, 2013.

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AL. Ceramic Electrolytes All-Solid-state L: Ceramic Electrolytes for All-Solid-state Li Batteries. World Scientific Publishing Co Pte Ltd, 2018.

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Raghavan, Prasanth, e Jabeen Fatima. Ceramic and Specialty Electrolytes for Energy Storage Devices. Taylor & Francis Group, 2021.

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Ceramic and Specialty Electrolytes for Energy Storage Devices. Taylor & Francis Group, 2021.

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Raghavan, Prasanth, e Jabeen Fatima. Ceramic and Specialty Electrolytes for Energy Storage Devices. Taylor & Francis Group, 2021.

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Raghavan, Prasanth, e Jabeen Fatima. Ceramic and Specialty Electrolytes for Energy Storage Devices. Taylor & Francis Group, 2021.

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Kotobuki, Masashi. Ceramic Electrolytes for All-Solid-State Li Batteries. World Scientific Publishing Co Pte Ltd, 2018.

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Raghavan, Prasanth, e Jabeen Fatima M. J. Ceramic and Specialty Electrolytes for Energy Storage Devices. Taylor & Francis Group, 2021.

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Capitoli di libri sul tema "Ceramic electrolytes"

Julien, Christian, e Alain Mauger. "Ceramic Electrolytes". In Rechargeable Lithium Metal Batteries, 407–513. Cham: Springer Nature Switzerland, 2024. https://doi.org/10.1007/978-3-031-67470-9_5.

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Gordon, R. S. "β-Alumina Ceramic Electrolytes". In Inorganic Reactions and Methods, 199–202. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145333.ch138.

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Gordon, R. S. "Zircronia-Based Ceramic Electrolytes". In Inorganic Reactions and Methods, 212–13. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145333.ch145.

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Thomas, Anjumole P., Akhila Das, Neethu T. M. Balakrishnan, Sajan Chinnan, Jou-Hyeon Ahn, Fatima M. J. Jabeen e Prasanth Raghavan. "Transparent Electrolytes". In Ceramic and Specialty Electrolytes for Energy Storage Devices, 217–36. First edition. I Boca Raton : CRC Press, 2021. I Includes bibliographical references and: CRC Press, 2021. http://dx.doi.org/10.1201/9781003144816-10.

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Wang, Jianhang, Huiling Zhao e Ying Bai. "Ceramic-Based Solid-State Electrolytes". In ACS Symposium Series, 295–318. Washington, DC: American Chemical Society, 2022. http://dx.doi.org/10.1021/bk-2022-1413.ch012.

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Rost, A., J. Schilm, M. Kusnezoff e A. Michaelis. "Li-Ion Conducting Solid Electrolytes". In Ceramic Materials for Energy Applications III, 25–32. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118807934.ch3.

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Martin Haarberga, Geir, Sathiyaraj Kandhasamy, Signep Kjelstru, Marit T. Børsetc, Odne Burheimd e Xue Kange. "Thermoelectrochemical Cells with Molten Carbonate Electrolytes and Gas Electrodes". In Ceramic Transactions Series, 225–33. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2018. http://dx.doi.org/10.1002/9781119494096.ch23.

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Paolella, Andrea. "Interfacial Reactions in Ceramic Electrolytes and Hybrids". In Green Energy and Technology, 67–84. Cham: Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-63713-1_7.

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Thanganathan, Uma. "Study on Heteropolyacids/Ti/Zr Mixed Inorganic Composites for Fuel Cell Electrolytes". In Ceramic Transactions Series, 165–72. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118511435.ch18.

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Raskovalov, Anton A., e Nailya S. Saetova. "All-Solid-State Batteries Based on Glass-Ceramic Lithium Vanadate". In Solid Electrolytes for Advanced Applications, 297–334. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-31581-8_13.

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Atti di convegni sul tema "Ceramic electrolytes"

Wu, Xiaowen, Haomin Li, Meng Zhang, Zhenxing Wang, Yingsan Geng e Jianhua Wang. "Growth Characteristics of Plasma Electrolytic Oxidation Ceramic Insulating Film on the Surface of High-Temperature Resistant Wire". In 2024 IEEE PES 16th Asia-Pacific Power and Energy Engineering Conference (APPEEC), 1–4. IEEE, 2024. https://doi.org/10.1109/appeec61255.2024.10922557.

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Gitzhofer, F., M.-E. Bonneau e M. Boulos. "Double Doped Ceria Electrolyte Synthesized by Solution Plasma Spraying with Induction Plasma Technology". In ITSC2001, a cura di Christopher C. Berndt, Khiam A. Khor e Erich F. Lugscheider. ASM International, 2001. http://dx.doi.org/10.31399/asm.cp.itsc2001p0061.

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Abstract In the continuing progress of fuel cell technology, CeO2 double doped electrolytes appears to be promising for lowering the SOFC's working temperatures. Ceria electrolytes have better ionic conductivities than YSZ but, at low oxygen partial pressures, the chemical reduction of ceria leads to increasing electronic conduction. Double doping of the ceria increases the electrolytic conduction range without changing its conductivity. To avoid stress development within the ceria crystallographic structure, the dopants mix must have a mean ionic radius as close as possible to the critical ionic radius. Ceria electrolytes with various compositions and dopant concentrations are synthesized with a combinatorial chemistry approach. To synthesize new electrolytes, solution plasma spraying with nitrate salt precursor is used. The reaction is completed and nanocrystalline thin layers of ceramic are formed in the plasma. Comparative studies of plasma spraying techniques, with YSZ powder plasma spraying as electrolyte reference, were performed. Also, comparative impedance spectroscopy measurements are to be performed to validate the double doping hypothesis and thence to identify the best electrolytes in the suite of over 300 new materials.

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Rao, R. Prasada, D. Safanama, M. H. Chen, M. V. Reddy e S. Adams. "Solid Ceramic Electrolytes for Lithium Sulphur Rechargeable Batteries". In 14th Asian Conference on Solid State Ionics (ACSSI 2014). Singapore: Research Publishing Services, 2014. http://dx.doi.org/10.3850/978-981-09-1137-9_141.

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Liu, Wei, Ryan Milcarek, Kang Wang e Jeongmin Ahn. "Novel Structured Electrolyte for All-Solid-State Lithium Ion Batteries". In ASME 2015 13th International Conference on Fuel Cell Science, Engineering and Technology collocated with the ASME 2015 Power Conference, the ASME 2015 9th International Conference on Energy Sustainability, and the ASME 2015 Nuclear Forum. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/fuelcell2015-49384.

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In this study, a multi-layer structure solid electrolyte (SE) for all-solid-state electrolyte lithium ion batteries (ASSLIBs) was fabricated and characterized. The SE was fabricated by laminating ceramic electrolyte Li1.3Al0.3Ti1.7(PO4)3 (LATP) with polymer (PEO)10-Li(N(CF3SO2)2 electrolyte and gel-polymer electrolyte of PVdF-HFP/ Li(N(CF3SO2)2. It is shown that the interfacial resistance is generated by poor contact at the interface of the solid electrolytes. The lamination protocol, material selection and fabrication method play a key role in the fabrication process of practical multi-layer SEs.

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Mulay, Nishad, Dahyun Oh, Dan-Il Yoon e Sang-Joon (John) Lee. "Effect of Cyclic Compression on Mechanical Behavior of Ceramic-in-Polymer Composite Electrolytes for Lithium-Ion Batteries". In ASME 2021 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/imece2021-69196.

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Abstract Composite polymer electrolytes (CPEs) for lithium-ion batteries provide an effective balance of ionic conductivity, mechanical robustness, and safety. Loss of charge capacity, however, is caused by several contributing factors. In this work we specifically examine mechanical changes in the composite electrolyte layer. We apply cyclic compression to mimic stress cycling that is caused by asymmetric volume changes during charging cycles between anode and cathode. Using a representative composite electrolyte formulation consisting of Li6.4La3Zr1.4Ta0.6O12 (LLZTO) at 10 wt. % in polyethylene oxide (PEO) with bis(trifluoromethane) sulfonimide (LiTFSI), we experimentally measure stress-strain characteristics, stress relaxation time, and cyclic compression of a composite electrolyte. We also examine the effect of particle size, by comparing 500 nm vs. 5 μm sizes. At 15% compressive strain, the addition of 500 nm particles increased strain energy density (SED) by a factor of 2.6 and the addition of 5 μm particles increased SED by a factor of 2.9. Both particle sizes showed similar relaxation time constant, but the 5 μm particles showed tighter repeatability than the 500 nm case. Both compositions exhibited continual decline in peak stress beyond 500 cycles of compression at 15% strain. These experiments reveal insights into how cyclic loading can alter the mechanical response of a composite electrolyte, and thereby contribute to the broader understanding of electrochemical and mechanical coupling in lithium-ion batteries.

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Zhu, Bin. "Advanced Ceramic Fuel Cell R&D". In ASME 2004 2nd International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2004. http://dx.doi.org/10.1115/fuelcell2004-2499.

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Since many years in Swedish national research project and Swedish-Chinese research framework we have carried out advanced ceramic fuel cell research and development, targeting for intermediate and low temperature ceramic or solid oxide fuel cells (ILTCFCs or ILTSOFCs, 300–700°C) based on ceramic-based composite materials. The ceramic composite material developments in Sweden have been experienced from the oxyacid-salts oxide proton-based conductors, non-oxide containment salts, the ceria-based composite electrolytes and nano-composites. Among them the ceria-based composites showed excellent ionic conductivity of 0.01 to 1 Scm−1 and ILTCFCs using these composites as electrolytes have achieved high performances of 200 to 1000 mWcm−2 at temperatures between 400 and 700°C. The excellent ion conduction was resulted from hybrid proton and oxygen ion conduction. The hybrid ion conduction and dual electrode reactions and processes create a new fuel cell system. Advanced ceramic fuel cell aims at developing a new generation to realize the challenges for fuel cell commercialization. This paper reviews our more than 14 years R&D on the field with emphasis on the recent progresses and achievements.

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Christenn, C., A. Ansar, A. Haug, S. Wolf e J. Arnold. "The Solution Precursor Plasma Spray Process for Making Zirconia based Electrolytes". In ITSC2011, a cura di B. R. Marple, A. Agarwal, M. M. Hyland, Y. C. Lau, C. J. Li, R. S. Lima e A. McDonald. DVS Media GmbH, 2011. http://dx.doi.org/10.31399/asm.cp.itsc2011p1184.

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Abstract Ceramic layers, such as yttria-stabilized zirconia or scandia-stabilized zirconia, used for functional layers of solid oxide fuel cells, i.e. the gas tight oxygen ion conductive electrolyte or as ceramic component in the porous cermet anode, were obtained by the Solution Precursor Plasma Spray (SPPS) process. The influence of different solvent types on microstructure was analyzed by comparison of coatings sprayed with water-based solution to ethanol-based one. Use of solvent with low surface tension and low boiling point enhances splat formation, coating microstructure and crystalline structure. Parameter adjustment to receive coatings from nitrate solutions with ethanol as solvent was carried out. Results of Raman spectroscopy indicate that an intermediate of both nitrates (zirconyl and scandium nitrate hydrate) was deposited.

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Adnan, S. B. R. S., e N. S. Mohamed. "Structural, electrical and electrochemical properties of Li4ZrxSi1-xO4 (0.02 ≤ x ≤ 0.06) ceramic electrolytes". In ADVANCED MATERIALS AND RADIATION PHYSICS (AMRP-2015): 4th National Conference on Advanced Materials and Radiation Physics. AIP Publishing LLC, 2015. http://dx.doi.org/10.1063/1.4928818.

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Cai, Kunpeng, Peng Gao e Yang Zhang. "Influence of Flame Pattern on the Combustion Synthesis of Ceramic Electrolytes Lei Lei",. In 46th International Technical Conference on Clean Energy. Louisa, Virginia, USA: Coal Technologies Associates, 2022. http://dx.doi.org/10.52202/066314-0165.

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Berke, Ryan B., e Mark E. Walter. "Mechanical Characterization and Modeling of Corrugated Metal Foams for SOFC Applications". In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-64472.

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Planar solid oxide fuel cells (SOFCs) are made up of repeating sequences of thin layers of cermet electrodes, ceramic electrolytes, seals, and current-collectors. For electro-chemical reasons it is best to keep the electrolyte layers as thin as possible. However, for electrolyte-supported cells, the thin electrolytes are more susceptible to damage during production, assembly, and operation. The latest-generation electrolyte-supported SOFCs feature metallic foam current-collectors which relay current between the energy-producing materials and the rest of the circuit. These foams are stamped into a corrugated shape which is intended to reduce the compressive loads which are transferred through the stack onto the brittle electrolyte, but the mechanical behavior of the foams remain to be fully understood. Characterization of the corrugated metal foams consists of comparison of load-vs.-displacement behavior between experimentally measured compression data and a single-component finite element model which isolates the foam from the rest of the stack. Mechanical properties of the foam are found using an iterative approach, in which the material properties used as inputs to the model are changed until the load-displacement data best agrees with experiments. The model explores the influence of elastic and plastic properties in combination with and without friction. Thus obtained, the properties can then be used in a stack model to determine which parameters can best reduce the demands on the electrolyte without sacrificing electrochemical performance.

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Rapporti di organizzazioni sul tema "Ceramic electrolytes"

Angell, C. A. Solid electrolytes and impact-resistant ceramics. Office of Scientific and Technical Information (OSTI), agosto 1991. http://dx.doi.org/10.2172/5163200.

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Angell, C. A. Solid electrolytes and impact-resistant ceramics. [Progress report]. Office of Scientific and Technical Information (OSTI), agosto 1991. http://dx.doi.org/10.2172/10150946.

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Kueper, T. W. Sol-gel derived ceramic electrolyte films on porous substrates. Office of Scientific and Technical Information (OSTI), maggio 1992. http://dx.doi.org/10.2172/5011926.

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Kueper, Timothy Walter. Sol-gel derived ceramic electrolyte films on porous substrates. Office of Scientific and Technical Information (OSTI), maggio 1992. http://dx.doi.org/10.2172/10159001.

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J.N. Bruggeman, T.R. Alcorn, R. Jeltsch e T. Mroz. Wettable Ceramic-Based Drained Cathode Technology for Aluminum Electrolysis. Office of Scientific and Technical Information (OSTI), gennaio 2003. http://dx.doi.org/10.2172/806856.

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Ghezel-Ayagh, Hossein. Proton-Conducting Ceramic Electrolyzers for High-Temperature Water Splitting. Office of Scientific and Technical Information (OSTI), ottobre 2022. http://dx.doi.org/10.2172/1971069.

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Gal-Or, L., S. Haber e S. Liubovich. Electrophoretic and Electrolytic Deposition of Ceramic Particles on Porous Substrates. Fort Belvoir, VA: Defense Technical Information Center, settembre 1992. http://dx.doi.org/10.21236/ada265141.

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Tong, Jianhua (Joshua), Kyle S. Brinkman, Hai Xiao e Fei Peng. Laser 3D printing of highly compacted protonic ceramic electrolyzer stack. Office of Scientific and Technical Information (OSTI), novembre 2022. http://dx.doi.org/10.2172/2339934.

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Sakamoto, Jeffrey, Neil Dasgupta e Donald Siegel. Physical and Mechano-Electrochemical Phenomena of Thin Film Lithium-Ceramic Electrolyte Constructs. Office of Scientific and Technical Information (OSTI), dicembre 2022. http://dx.doi.org/10.2172/1905135.

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Author, Not Given. Energy efficient process for recycling sodium sulfate utilizing ceramic solid electrolyte. Final report. Office of Scientific and Technical Information (OSTI), giugno 1999. http://dx.doi.org/10.2172/765644.

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