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Littérature scientifique sur le sujet « Composite Polymer Electrolytes »

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Publié le 7 septembre 2023

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Articles de revues sur le sujet "Composite Polymer Electrolytes"

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He, Binlang, Shenglin Kang, Xuetong Zhao, Jiexin Zhang, Xilin Wang, Yang Yang, Lijun Yang et Ruijin Liao. « Cold Sintering of Li6.4La3Zr1.4Ta0.6O12/PEO Composite Solid Electrolytes ». Molecules 27, no 19 (10 octobre 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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Wang, Bo. « Polymer-Mineral Composite Solid Electrolytes ». MRS Advances 4, no 49 (2019) : 2659–64. http://dx.doi.org/10.1557/adv.2019.317.

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ABSTRACTPolymer-mineral composite solid electrolytes have been prepared by hot pressing using lithium ion-exchanged bentonite (LIEB) and mineral derived LATSP (Li1.2Al0.1Ti1.9Si0.1P2.9O12) NASICON materials as solid electrolyte fillers in the polyethylene oxide (PEO) polymer containing LiTFSI salt. The mineral based solid electrolyte fillers not only increase ionic conductivity but also improve thermal stability. The highest ionic conductivities in the PEO-LIEB and PEO-LATSP composites were found to be 9.4×10-5 and 3.1×10-4 S·cm-1 at 40°C, respectively. The flexible, thermal stable and mechanical sturdy polymer-mineral composite solid electrolyte films can be used in the all-solid-state batteries.
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Ambika, C., G. Hirankumar, S. Thanikaikarasan, K. K. Lee, E. Valenzuela et P. J. Sebastian. « Influence of TiO2 as Filler on the Discharge Characteristics of a Proton Battery ». Journal of New Materials for Electrochemical Systems 18, no 4 (20 novembre 2015) : 219–23. http://dx.doi.org/10.14447/jnmes.v18i4.351.

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Different concentrations of TiO2 dispersed nano-composite proton conducting polymer electrolyte membranes were prepared using solution casting technique. Fourier Transform Infrared Spectroscopic analysis was carried out to determine the vibrational investigations about the prepared membranes. Variation of conductivity due to the incorporation of TiO2 in polymer blend electrolyte was analyzed using Electrochemical Impedance Spectroscopy and the value of maximum conductivity is 2.8×10-5 Scm-1 for 1mol% of TiO2 dispersed in polymer electrolytes. Wagner polarization technique has been used to determine the value of charge transport number of the composite polymer electrolytes. The electrochemical stability window of the nano-composite polymer electrolyte was analyzed using Linear Sweep Voltammetry. Fabrication of Proton battery is carried out with configuration of Zn+ZnSO4.7H2O+AC ǁ Polymer electrolyte ǁ MnO2+AC. Discharge characteristics were investigated for polymer blend electrolytes and 1mol% TiO2 dispersed nano-composite polymer electrolytes at constant current drain of 10μA. There is evidence of enhanced performance for proton battery which was constructed using 1mol% TiO2 dispersed nano-composite polymer electrolytes compared to the blend polymer electrolytes.
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Hoang Huy, Vo Pham, Seongjoon So et Jaehyun Hur. « Inorganic Fillers in Composite Gel Polymer Electrolytes for High-Performance Lithium and Non-Lithium Polymer Batteries ». Nanomaterials 11, no 3 (1 mars 2021) : 614. http://dx.doi.org/10.3390/nano11030614.

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Among the various types of polymer electrolytes, gel polymer electrolytes have been considered as promising electrolytes for high-performance lithium and non-lithium batteries. The introduction of inorganic fillers into the polymer-salt system of gel polymer electrolytes has emerged as an effective strategy to achieve high ionic conductivity and excellent interfacial contact with the electrode. In this review, the detailed roles of inorganic fillers in composite gel polymer electrolytes are presented based on their physical and electrochemical properties in lithium and non-lithium polymer batteries. First, we summarize the historical developments of gel polymer electrolytes. Then, a list of detailed fillers applied in gel polymer electrolytes is presented. Possible mechanisms of conductivity enhancement by the addition of inorganic fillers are discussed for each inorganic filler. Subsequently, inorganic filler/polymer composite electrolytes studied for use in various battery systems, including Li-, Na-, Mg-, and Zn-ion batteries, are discussed. Finally, the future perspectives and requirements of the current composite gel polymer electrolyte technologies are highlighted.
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K.P.Radha, K. P. Radha, et S. Selvasekarapandian S. Selvasekarapandian. « Characterisation of PVA : NH4F : ZRO2 Composite Polymer Electrolytes ». International Journal of Scientific Research 1, no 5 (1 juin 2012) : 118–19. http://dx.doi.org/10.15373/22778179/oct2012/43.

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Somsongkul, Voranuch, Surassawatee Jamikorn, Atchana Wongchaisuwat, San H. Thang et Marisa Arunchaiya. « Efficiency and Stability Enhancement of Quasi-Solid-State Dye-Sensitized Solar Cells Based on PEO Composite Polymer Blend Electrolytes ». Advanced Materials Research 1131 (décembre 2015) : 186–92. http://dx.doi.org/10.4028/www.scientific.net/amr.1131.186.

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The composite polymer electrolyte consisting of poly (ethylene oxide) (PEO), KI, I2 and TiO2 was blended with low molecular weight poly (ethylene glycol) (PEG) and (PEG-MA)-Ru. The SEM images of these blended PEO electrolytes showed better dispersion of materials and the electrochemical impedance spectroscopic study showed an increase in conductivity compared to that of composite PEO electrolyte. These results were consistent with enhanced efficiency of DSSCs using these blended PEO electrolytes. The energy conversion efficiencies of DSSCs using composite PEO-PEG, PEO-(PEG-MA)-Ru and PEO-PEG-(PEG-MA)-Ru polymer blend electrolytes were 5.47, 5.05 and 5.28, respectively compared to 4.99 of DSSC using composite PEO electrolyte. The long-term storage of unsealed DSSCs at room temperature for 93 days demonstrated that the cell efficiency gradually decreased to 0.49-1.88%. DSSCs assembled with composite polymer blend electrolyte showed a slower decrease than that of DSSC using composite PEO electrolyte. It was found that the composite PEO-PEG-(PEG-MA)-Ru polymer blend electrolyte of 1.0:0.1:0.1 weight ratio gave the best improvement in stability of DSSCs.
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Sahore, Ritu, Beth L. Armstrong, Changhao Liu et Xi Chen. « A Three-Dimensionally Interconnected Composite Polymer Electrolyte for Solid-State Batteries ». ECS Meeting Abstracts MA2022-02, no 4 (9 octobre 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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Capuano, F., F. Croce et B. Scrosati. « Composite Polymer Electrolytes ». Journal of The Electrochemical Society 138, no 7 (1 juillet 1991) : 1918–22. http://dx.doi.org/10.1149/1.2085900.

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Mallikarjun, A., et J. Siva Kumar. « Thermal and Optical Properties of NiO nano doped in PVDF-HFP : Mg(ClO4)2 Nano Composite Solid Polymer Electrolytes ». Oriental Journal Of Chemistry 39, no 3 (30 juin 2023) : 755–58. http://dx.doi.org/10.13005/ojc/390327.

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NiO doped nano composite solid polymer electrolytes (SPEs) composed of PVDF-HFP (poly (vinylidene Fluoride hexafluoropropylene)): Mg(ClO4)2 with different weight concentration of NiO nanofillers synthesized by solution cast technique. NiO incorporated nano composite polymer electrolytes are characterized by UV-Visible spectroscopy to find direct and indirect band gaps. The thermal stability and structural changes of the nano composite polymer electrolytes is studied by DSC and noticed that PSN12 sample having optimum change. The changes in band gap values maybe due to greater number of Ni and Mg atoms from NiO and Mg(ClO4)2 salt are coordinating by donating electrons to F atom of the PVDF-HFP polymer. From the optical absorption measurements, the found values direct and indirect band gap was low, and these values are 3.8252 eV and 1.6885 eV respectively for the polymer electrolyte sample PSN12 where weight ratio of NiO is12% nanofiller incorporated PVDF-HFP: Mg(ClO4)2 polymer electrolyte.
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Katcharava, Zviadi, Anja Marinow, Rajesh Bhandary et Wolfgang H. Binder. « 3D Printable Composite Polymer Electrolytes : Influence of SiO2 Nanoparticles on 3D-Printability ». Nanomaterials 12, no 11 (29 mai 2022) : 1859. http://dx.doi.org/10.3390/nano12111859.

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We here demonstrate the preparation of composite polymer electrolytes (CPEs) for Li-ion batteries, applicable for 3D printing process via fused deposition modeling. The prepared composites consist of modified poly(ethylene glycol) (PEG), lithium bis(trifluoromethylsulfonyl)imide (LiTFSI) and SiO2-based nanofillers. PEG was successfully end group modified yielding telechelic PEG containing either ureidopyrimidone (UPy) or barbiturate moieties, capable to form supramolecular networks via hydrogen bonds, thus introducing self-healing to the electrolyte system. Silica nanoparticles (NPs) were used as a filler for further adjustment of mechanical properties of the electrolyte to enable 3D-printability. The surface functionalization of the NPs with either ionic liquid (IL) or hydrophobic alkyl chains is expected to lead to an improved dispersion of the NPs within the polymer matrix. Composites with different content of NPs (5%, 10%, 15%) and LiTFSI salt (EO/Li+ = 5, 10, 20) were analyzed via rheology for a better understanding of 3D printability, and via Broadband Dielectric Spectroscopy (BDS) for checking their ionic conductivity. The composite electrolyte PEG 1500 UPy2/LiTFSI (EO:Li 5:1) mixed with 15% NP-IL was successfully 3D printed, revealing its suitability for application as printable composite electrolytes.
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Thèses sur le sujet "Composite Polymer Electrolytes"

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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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Kashyap, Aditya Jagannath. « Conducting Polymer Based Gel Electrolytes for pH Sensitivity ». Scholar Commons, 2019. https://scholarcommons.usf.edu/etd/7824.

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The evaluation of concentration of ions and molecules with the help of biosensors have been regarded as an emerging technology. Bio and chemical sensors have a variety of applications in the field of medicine, military, environmental and food industries alike. With an estimated investment growth of over 4.31% in the development of pH sensors in the next five year, the objective of a developing a robust measurement system is all the more required. The scope of this research is to evaluate the ability of conducting polymer-based gel electrolytes for pH sensitivity, as a function of the transistor characteristics using an Extended Gate Field Effect Transistor or a conducting film in an electrochemical cell. Polymer gels were prepared by dissolving a suitable conducting polymer in an acidic media. The interaction of the gel with a buffer solution of known pH was collected as electric signals using a glassy carbon as an electrode. The electrochemical cell was further connected to the gate of a Metal-Oxide-Semiconductor Field Effect transistor (MOS-FET). The drain current was measured under two conditions; a) voltage across the gate (VGS) was kept constant, with varying voltage across the drain (VDS) and b) voltage across drain was fixed, while gate voltage changed. The drain current versus voltage of the transistor was plotted as a function of the ion interaction between the gel and the buffer. Different plots were recorded for different values of pH solutions. Final results were plotted to calculate the change in threshold voltage, for every change in pH of the observed solution. pH sensitivity of the gels was further tested through the Electrochemical Impedance Spectroscopy method, using a potentiostat and a three-electrode electrochemical cell. With a small excitation, the AC current flowing through the circuit at different frequencies were recorded and the plots discussed, to evaluate sensitivity to pH.
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Kumar, Ravi. « An investigation of the composite polymer electrolytes and electrocatalysts for the proton exchange membrane fuel cell ». Thesis, University of Newcastle upon Tyne, 2014. http://hdl.handle.net/10443/2417.

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Durability is one of the major issues for the successful commercialisation of polymer electrolyte membrane fuel cells (PEMFCs) and it mainly depends on the stability of the individual cell components. In order to minimise the durability issues, the development of new materials or modification to replace the existing fuel cell components is required. The typically used proton exchange membrane (PEM) is the perfluorosulfonated polymer such as Nafion® and electrocatalysts for PEMFC is high surface area carbon supported platinum electrocatalyst (Pt/C). A higher temperature of operation (>80 oC) of PEMFC would boost their performance by enhancing the electrochemical kinetics and also improve the carbon monoxide tolerance of platinum catalysts. A Nafion® type membrane is not suitable for higher temperature operation as its proton conductivity mainly depends on the hydration level. An approach to improve the proton conductivity of Nafion® based membranes is the incorporation of hydrophilic inorganic oxide materials into the Nafion® polymer matrix. A composite membrane based on graphite oxide (GO) has been developed and demonstrated as an alternative PEM for high temperature operation up to 120 oC. GO is an insulator and hydrophilic in nature. GO exhibits proton conductivity due to the presence of acidic functional groups like, carboxylic acid, hydroxyl groups and epoxy groups. Further functionalisation of GO with sulfonic acid (called SGO) improves the proton transport properties of GO which in turn improves the composite membrane proton conductivity. Free standing GO and SGO papers were fabricated and evaluated to understand their proton transport mechanism. The in-plane and through-plane proton conductivities of GO paper were 0.008 and 0.004 S.cm-1 at 30 oC and 25% RH respectively. The in-plane and through-plane proton conductivities of SGO paper were 0.04 and 0.012 S.cm-1 at 30 oC and 25% RH respectively. The fuel cell performance of a membrane electrode assembly made with SGO paper gave a maximum power density of 113 mW cm-2. GO/Nafion composite membranes were fabricated with different GO content. The composite membranes with an optimum of 4 wt% GO showed better mechanical strength (tensile strength of 8.17 MPa) and water uptake (37.2%) compared to recast Nafion. A GO (4 wt%) /Nafion composite membrane gave a high ion exchange capacity (IEC) value of 1.38 meq g-1. The proton conductivity of GO (4 wt%) /Nafion was 0.026 S.cm-1 at 120 oC. SGO/Nafion composite membrane showed improved proton ii conductivity (0.029 S.cm-1). The SGO/Nafion composite membrane gave peak power density of 240 mW cm-2, whereas GO/Nafion composite membrane gave a power density of 200 mW cm-2 at 120 oC and 25% RH. The stability and durability of GO and SGO/Nafion composite membranes was investigated under fuel cell operating conditions and compared with recast Nafion. A non fluorinated proton exchange membrane based sulfonated poly ether-ether ketone (SPEEK) was used to develop a composite membrane with SGO. SGO (4 wt%) /SPEEK composite membrane showed high IEC of 2.3 meq g-1 and proton conductivity of 0.055 S.cm-1 at 80 oC and 30% RH. SGO (4 wt%) /SPEEK composite membrane gave a power density of 378 mW cm-2 at 80 oC and 30% RH, which was higher than that of recast SPEEK (254 mW cm-2). Transition metal nitride based electrocatalyst support such as titanium nitride (TiN), has been used to replace carbon to support Pt and Pt-Co alloy for PEMFC cathode. Nafion® stabilised Pt nanoparticles supported on TiN (Pt/TiN) were prepared and evaluated as cathode electrocatalyst for PEMFC. Pt/TiN showed better electrocatalytic activity, stability and durability under fuel cell operating conditions compared to commercial Pt/C. Pt/TiN retained 66% of electrochemical active surface area (ECSA) after 1000 potential cycles (cycled between the potential range of +0.6 to +1.20 V vs. RHE) under fuel cell operating conditions. The ECSA of the Pt/C catalyst fell by 75%. Pt/TiN was also evaluated for its suitability in phosphoric acid based PEMFCs. Pt/TiN showed better durability than Pt/C under fuel cell operating conditions. Pt/TiN showed a two-fold increase in mass and specific activities than Pt/C as calculated from oxygen reduction reaction data at 0.9 V. An improved durability of Pt/TiN resulted from a Nafion® layer surrounding the Pt protecting from phosphate ion adsorption. Alloying of Pt with 3d transition metals changes the electronic structure of Pt (Pt becomes e- deficient) and enhances the electrocatalytic activity of PtM alloy compared to Pt. 3d transition metals such as Fe, Co and Ni are reported to be more active than other metals. Pt-Co alloy supported on TiN was prepared and evaluated. Pt-Co/TiN showed about +21 and +32 mV positive shifts in half-wave potential compare to Pt/TiN and conventional Pt/C respectively. After 5000 potential cycles, the ECSA of Pt-Co/TiN had decayed by about 55%, whereas Pt/TiN and Pt/C showed a greater loss in ECSA of 70%.
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Crisanti, Samuel Nathan Crisanti. « Effect of Alumina and LAGP Fillers on the Ionic Conductivity of Printed Composite Poly(Ethylene Oxide) Electrolytes for Lithium-Ion Batteries ». Case Western Reserve University School of Graduate Studies / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=case1522756200308156.

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Langer, Frederieke [Verfasser], Robert [Akademischer Betreuer] Kun, Robert [Gutachter] Kun et Matthias [Gutachter] Busse. « Synthesis and electrochemical investigation of garnet-polymer composite electrolytes for solid state batteries / Frederieke Langer ; Gutachter : Robert Kun, Matthias Busse ; Betreuer : Robert Kun ». Bremen : Staats- und Universitätsbibliothek Bremen, 2017. http://d-nb.info/1154925854/34.

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Treptow, Florian. « Polyaniline as electrolyte in polymer electrolyte membrane fuel cells ». Thesis, Loughborough University, 2005. https://dspace.lboro.ac.uk/2134/11086.

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The applications of polyaniline (PAni) for use as electrolyte in Polymer-Electrolyte-Membrane Fuel Cells (PEMFC) were investigated. P Ani was dissolved in N-methyl pyrrolidone (NMP), cast as Emeraldine Base membranes (EB) and then doped with halide acids. The proton conductivity was measured according to Hittorf. The chloride ion distribution within the membrane was evaluated using energy-dispersive-X-ray analysis (EDX) and photometric analysers and the diffusion coefficient was calculated. The specific resistance was determined using conventional 4-point measurement. Halide doped membranes were found to be proton conducting, however, during cell operation halide removal occurred causing a rapid decline in the cell performance. The maximum power density achieved was O.3m W·cm-2 for a 70J.1m thick membrane saturate with chloride between 3,5 and 4,5mgchloride per gPAni. Composite membranes with phosphotungstic acid (PWA), antimonic acid (AA) and zirconium phosphate (ZP) were developed and also tested in a standard measuring fuel cell. While membranes produced via ion exchange (ZP) showed the same result like halide doped ones, AA composite membranes showed a stable voltage and current results. The highest measured outcome of 373.3mW·cm-2 was found with a PWA membrane, produced through dispersing 3g of phosphotungstic acid in 300ml of a 1% polyanilinelNMP solution. It was also observed, that the higher power density was obtained from the fuel cell which uses the lower-loaded membrane. It is clear that a positive effect on the cell performance is given by the addition of phosphotungstic acid to the polyaniline membrane. Therefore, the saturation of PW A have to be taken into account to not lower the power density.
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Inaba, Minoru. « Electrochemical Reactions on Polymer Electrolyte Membrane/Electrode Composites ». Kyoto University, 1994. http://hdl.handle.net/2433/74664.

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Zhao, Fangtong. « A SOLID-STATE COMPOSITE ELECTROLYTE FOR LITHIUM-ION BATTERIES WITH 3D-PRINTING FABRICATION ». University of Akron / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=akron1619814091802231.

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Yarmolenko, O. V., S. A. Baskakov, Y. M. Shulga, P. I. Vengrus et O. N. Efimov. « Supercapacitors Based on Composite Polyaniline / Reduced Graphene Oxide with Network Nanocomposite Polymer Electrolyte ». Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35510.

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The paper describes investigation on new types of supercapacitors based on composite polyani-line/reduced graphene oxide with network nanocomposite polymer electrolyte. Its prototypes are all solid state. The new network polymer electrolytes based on polyethylene glycol diacrylate and nanoparticle SiO2 was synthesized by reaction of radical polymerization in the environment of liquid organic electrolyte. The work is aimed to obtain a polymer electrolyte that is compatible with the electrode materials of superca-pacitors. For these purposes the method of FTIR spectroscopy, a.c. electrochemical impedance and gal-vanostatic cycling were used. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/35510
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Yin, Yijing. « An Experimental Study on PEO Polymer Electrolyte Based All-Solid-State Supercapacitor ». Scholarly Repository, 2010. http://scholarlyrepository.miami.edu/oa_dissertations/440.

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Supercapacitors are one of the most important electrochemical energy storage and conversion devices, however low ionic conductivity of solid state polymer electrolytes and the poor accessibility of the ions to the active sites in the porous electrode will cause low performance for all-solid-state supercapacitors and will limit their application. The objective of the dissertation is to improve the performance of all-solid-state supercapactor by improving electrolyte conductivity and solving accessibility problem of the ions to the active sites. The low ionic conductivity (10-8 S/cm) of poly(ethylene oxide) (PEO) limits its application as an electrolyte. Since PEO is a semicrystal polymer and the ion conduction take place mainly in the amorphous regions of the PEO/Lithium salt complex, improvements in the percentage of amorphous phase in PEO or increasing the charge carrier concentration and mobility could increase the ionic conductivity of PEO electrolyte. Hot pressing along with the additions of different lithium salts, inorganic fillers and plasticizers were applied to improve the ionic conductivity of PEO polymer electrolytes. Four electrode methods were used to evaluate the conductivity of PEO based polymer electrolytes. Results show that adding certain lithium salts, inorganic fillers, and plasticizers could improve the ionic conductivity of PEO electrolytes up 10-4 S/cm. Further hot pressing treatment could improve the ionic conductivity of PEO electrolytes up to 10-3 S/cm. The conductivity improvement after hot pressing treatment is elucidated as that the spherulite crystal phase is convert into the fringed micelle crystal phase or the amorphous phase of PEO electrolytes. PEO electrolytes were added into active carbon as a binder and an ion conductor, so as to provide electrodes with not only ion conduction, but also the accessibility of ion to the active sites of electrodes. The NaI/I2 mediator was added to improve the conductivity of PEO electrolyte and provide pseudocapacitance for all-solid-state supercapacitors. Impedance, cyclic voltammetry, and gavalnostatic charge/discharge measurements were conducted to evaluate the electrochemical performance of PEO polymer electrolytes based all-solid-state supercapacitors. Results demonstrate that the conductivity of PEO electrolyte could be improved to 0.1 S/cm with a mediator concentration of 50wt%. A high conductivity in the PEO electrolyte with mediator is an indication of a high electron exchange rate between the mediator and mediator. The high electron exchange rates at mediator carbon interface and between mediator and mediator are essential in order to obtain a high response rate and high power. This automatically solves the accessibility problem. With the addition of NaI/I2 mediator, the specific capacitance increased more than 30 folds, specific power increased almost 20 folds, and specific energy increased around 10 folds. Further addition of filler to the electrodes along with the mediator could double the specific capacitor and specific power of the all-solid-state supercapacitor. The stability of the corresponded supercapacitor is good within 2000 cycles.
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Livres sur le sujet "Composite Polymer Electrolytes"

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Inamuddin, Dr, Ali Mohammad et Abdullah M. Asiri, dir. Organic-Inorganic Composite Polymer Electrolyte Membranes. Cham : Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-52739-0.

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Sharma, Achchhe Lal, Anil Arya et Anurag Gaur. Polymer Electrolytes and their Composites for Energy Storage/Conversion Devices. New York : CRC Press, 2022. http://dx.doi.org/10.1201/9781003208662.

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Siekierski, Maciej. Composite polymeric electrolytes : Mesoscale models and ion associations = Kompozytowe elektrolity polimerowe : modele mezoskalowe i asocjacje jonowe. Warszawa : Oficyna Wydawnicza Politechniki Warszawskiej, 2012.

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Asri, Abdullah, Ali Mohammad et Inamuddin. Organic-Inorganic Composite Polymer Electrolyte Membranes : Preparation, Properties, and Fuel Cell Applications. Springer International Publishing AG, 2017.

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Mohammad, Ali, Abdullah M. Asiri et Dr Inamuddin. Organic-Inorganic Composite Polymer Electrolyte Membranes : Preparation, Properties, and Fuel Cell Applications. Springer, 2018.

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Sharma, Achchhe Lal, Arya Anil et Anurag Gaur. Polymers Electrolytes and Their Composites for Energy Storage/Conversion Devices. Taylor & Francis Group, 2022.

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Sharma, Achchhe Lal, Anil Arya et Anurag Gaur. Polymers Electrolytes and Their Composites for Energy Storage/Conversion Devices. Taylor & Francis Group, 2022.

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Chapitres de livres sur le sujet "Composite Polymer Electrolytes"

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Kariduraganavar, Mahadevappa Y., Balappa B. Munavalli et Anand I. Torvi. « Proton Conducting Polymer Electrolytes for Fuel Cells via Electrospinning Technique ». Dans Organic-Inorganic Composite Polymer Electrolyte Membranes, 421–58. Cham : Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-52739-0_17.

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Amin, Izazi Azzahidah, Joon Ching Juan et Chin Wei Lai. « An Overview of Chemical and Mechanical Stabilities of Polymer Electrolytes Membrane ». Dans Organic-Inorganic Composite Polymer Electrolyte Membranes, 327–40. Cham : Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-52739-0_12.

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Vijayakumar, Vidyanand, Meena Ghosh, Paresh Kumar Samantaray, Sreekumar Kurungot, Martin Winter et Jijeesh Ravi Nair. « Chapter 5. 2D Nanomaterial-based Polymer Composite Electrolytes for Lithium-based Batteries ». Dans Two-dimensional Inorganic Nanomaterials for Conductive Polymer Nanocomposites, 204–74. Cambridge : Royal Society of Chemistry, 2021. http://dx.doi.org/10.1039/9781839162596-00204.

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Misztal-Faraj, B., F. Krok, J. R. Dygas, Z. Florjañczyk, E. Zygad O-Monikowska et E. Rogalska. « Dielectric Relaxations in Lithium Composite Polymer Electrolytes Based on PEO and Diethylaluminum Carboxylate ». Dans Materials for Lithium-Ion Batteries, 627–32. Dordrecht : Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-011-4333-2_58.

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Krishnan, M. A., Neethu T. M. Balakrishnan, Akhila Das, Leya Rose Raphael, M. J. Jabeen Fatima et Raghavan Prasanth. « Electrospun-Based Nonwoven 3D Fibrous Composite Polymer Electrolytes for High-Performance Lithium-Ion Batteries ». Dans Electrospinning for Advanced Energy Storage Applications, 153–78. Singapore : Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-8844-0_6.

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Choi, Young Jin, Sung Hyun Kim, Sang Choul Park, Dong Hyun Shin, Dong Hun Kim et Ki Won Kim. « A Study on the Electrochemical Properties of PEO-Carbon Composite Polymer Electrolytes for Lithium/Sulfur Battery ». Dans Materials Science Forum, 945–48. Stafa : Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-431-6.945.

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Wieczorek, Wladyslaw, et Maciej Siekierski. « Composite Polymeric Electrolytes ». Dans Nanocomposites, 1–70. Boston, MA : Springer US, 2008. http://dx.doi.org/10.1007/978-0-387-68907-4_1.

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Arya, Anil, Annu Sharma, A. L. Sharma et Vijay Kumar. « Polymer and Their Composites ». Dans Polymer Electrolytes and their Composites for Energy Storage/Conversion Devices, 3–42. New York : CRC Press, 2022. http://dx.doi.org/10.1201/9781003208662-2.

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Rai, Atma, Shweta Tanwar, Avirup Das et A. L. Sharma. « Polymer Composites for Supercapacitors ». Dans Polymer Electrolytes and their Composites for Energy Storage/Conversion Devices, 123–47. New York : CRC Press, 2022. http://dx.doi.org/10.1201/9781003208662-7.

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Chaurasia, Sujeet Kumar, Kunwar Vikram, Manish Pratap Singh et Manoj K. Singh. « Hybrid Organic-Inorganic Polymer Composites ». Dans Polymer Electrolytes and their Composites for Energy Storage/Conversion Devices, 43–65. New York : CRC Press, 2022. http://dx.doi.org/10.1201/9781003208662-3.

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Actes de conférences sur le sujet "Composite Polymer Electrolytes"

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LAKSHMAN DISSANAYAKE, M. A. K. « NANO-COMPOSITE SOLID POLYMER ELECTROLYTES ». Dans Proceedings of the 8th Asian Conference. WORLD SCIENTIFIC, 2002. http://dx.doi.org/10.1142/9789812776259_0027.

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Dam, Tapabrata, Satya N. Tripathy, M. Paluch, S. Jena et D. K. Pradhan. « Ionic conduction in polymer composite electrolytes ». Dans DAE SOLID STATE PHYSICS SYMPOSIUM 2015. Author(s), 2016. http://dx.doi.org/10.1063/1.4947859.

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Gurusiddappa, J., W. Madhuri, K. Priya Dasan et R. Padma Suvarna. « PEO/CoO composite polymer electrolytes for lithium batteries ». Dans PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON PHYSICS OF MATERIALS AND NANOTECHNOLOGY ICPN 2019. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0008994.

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Subban, R. H. Y., Mohamad Rusop, Rihanum Yahaya Subban, Norlida Kamarulzaman et Wong Tin Wui. « Immittance Responses of Composite PVC Based Polymer Electrolytes ». Dans INTERNATIONAL CONFERENCE ON ADVANCEMENT OF MATERIALS AND NANOTECHNOLOGY : (ICAMN—2007). AIP, 2010. http://dx.doi.org/10.1063/1.3377851.

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ITOH, TAKAHITO, YOSIAKI ICHIKAWA, YUKO MIYAMURA, TAKAHIRO UNO, MASATAKA KUBO, YASUO TAKEDA, QI LI et OSAMU YAMAMOTO. « COMPOSITE POLYMER ELECTROLYTES BASED ON HYPERBRANCHED POLYMER AND APPLICATION TO LITHIUM POLYMER BATTERIES ». Dans Proceedings of the 8th Asian Conference. WORLD SCIENTIFIC, 2002. http://dx.doi.org/10.1142/9789812776259_0025.

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Hashmi, S. A., H. M. Upadhyaya et Awalendra K. Thakur. « SODIUM ION CONDUCTING COMPOSITE POLYMER ELECTROLYTES FOR BATTERY APPLICATIONS ». Dans Proceedings of the 7th Asian Conference. WORLD SCIENTIFIC, 2000. http://dx.doi.org/10.1142/9789812791979_0072.

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Zhang, Ruisi, Niloofar Hashemi, Maziar Ashuri et Reza Montazami. « Advanced Gel Polymer Electrolyte for Lithium-Ion Polymer Batteries ». Dans ASME 2013 7th International Conference on Energy Sustainability collocated with the ASME 2013 Heat Transfer Summer Conference and the ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/es2013-18386.

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We report improved performance of Li-ion polymer batteries through advanced gel polymer electrolytes (GPEs). Compared to solid and liquid electrolytes, GPEs are advantageous as they can be fabricated in different shapes and geometries; also ionic properties are significantly superior to that of solid and liquid electrolytes. We have synthetized GPE in form of membranes by trapping ethylene carbonate and propylene carbonate in a composite of polyvinylidene fluoride and N-methylpyrrolidinore. By applying phase-transfer method, we synthetized membranes with micro-pores, which led to higher ionic conductivity. The proposed membrane is to be modified further to have higher capacity, stronger mechanical properties, and lower internal resistance. In order to meet those requirements, we have doped the samples with gold nanoparticles (AuNPs) to form nanoparticle-polymer composites with tunable porosity and conductivity. Membranes doped with nanoparticles are expected to have higher porosity, which leads to higher ion mobility; and improved electrical conductivity. Four-point-probe measurement technique was used to measure the sheet resistance of the membranes. Morphology of the membranes was studied using electron and optical microscopies. Cyclic voltammetry and potentiostatic impedance spectroscopy were performed to characterize electrochemical behavior of the samples as a function of weight percentage of embedded AuNPs.
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Sun, C. C., A. H. You, L. L. Teo et L. W. Thong. « Effect of Al2O3 in poly(methyl methacrylate) composite polymer electrolytes ». Dans 8TH INTERNATIONAL CONFERENCE ON NANOSCIENCE AND NANOTECHNOLOGY 2017 (NANO-SciTech 2017). Author(s), 2018. http://dx.doi.org/10.1063/1.5034559.

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Jafirin, Serawati, Ishak Ahmad et Azizan Ahmad. « Composite polymer electrolytes based on MG49 and carboxymethyl cellulose from kenaf ». Dans THE 2013 UKM FST POSTGRADUATE COLLOQUIUM : Proceedings of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2013 Postgraduate Colloquium. AIP Publishing LLC, 2013. http://dx.doi.org/10.1063/1.4858757.

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Mulay, Nishad, Dahyun Oh, Dan-Il Yoon et Sang-Joon (John) Lee. « Effect of Cyclic Compression on Mechanical Behavior of Ceramic-in-Polymer Composite Electrolytes for Lithium-Ion Batteries ». Dans 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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Rapports d'organisations sur le sujet "Composite Polymer Electrolytes"

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Ratner, Mark A., et Duward F. Shriver. Composite, Polymer-Based Electrolytes for Advanced Batteries. Fort Belvoir, VA : Defense Technical Information Center, mars 2001. http://dx.doi.org/10.21236/ada407992.

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Khan, Saad A. :. Fedkiw Peter S., et Gregory L. Baker. Self-Assembled Silica Nano-Composite Polymer Electrolytes : Synthesis, Rheology & ; Electrochemistry. US : North Carolina State University ; Michigan State University, janvier 2007. http://dx.doi.org/10.2172/897873.

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Khan, Saad A., Peter S. Fedkiw et Gregory L. Baker. Composite polymer electrolytes using functionalized fumed silica : synthesis, rheology and electrochemistry. Office of Scientific and Technical Information (OSTI), mai 2002. http://dx.doi.org/10.2172/804908.

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Khan, Saad A., Peter S. Fedkiw et Gregory L. Baker. Composite polymer electrolytes using fumed silica fillers : synthesis, rheology and electrochemistry. Office of Scientific and Technical Information (OSTI), juin 1999. http://dx.doi.org/10.2172/761809.

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Wu, Nick, et Xiangwu Zhang. Solid-State Inorganic Nanofiber Network-Polymer Composite Electrolytes for Lithium Batteries. Office of Scientific and Technical Information (OSTI), avril 2021. http://dx.doi.org/10.2172/1779614.

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Shriver, D. F., et M. A. Ratner. Mixed ionic-electronic conduction and percolation in polymer electrolyte metal oxide composites. Final report. Office of Scientific and Technical Information (OSTI), juin 1997. http://dx.doi.org/10.2172/491618.

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