Academic literature on the topic 'Electrolyte solvent'

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Journal articles on the topic "Electrolyte solvent"

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Lu, Xuejun, María C. Gutiérrez, M. Luisa Ferrer, Xuejun Lu, and Jian Liu. "“Tri-Solvent-in-Salt” Electrolytes for High-Performance Supercapacitors." ECS Meeting Abstracts MA2022-01, no. 35 (July 7, 2022): 1412. http://dx.doi.org/10.1149/ma2022-01351412mtgabs.

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Electrolytes chemistry for high-performance supercapacitors (SCs) has been addressed recently, where solvents included in electrolyte composition dissolving or mixing the electrochemically active salts or ILs have been typically seen as a mere medium.[1] Specifically, attention regarding the achievement of high-performacne SCs has also been paid to, e.g., water-in-salt (WIS), solvent-in-salt (SIS), and bi-solvent-in-salt (BSIS) electrolytes, demonstrating that solvent molecules may indeed play a more active role.[2 - 4] In this presentation, we will talk about the design of a tri-solvent-in-salt (TSIS) electrolyte where every solvent contributed (with an IL, i.e., EMIMBF4) to the formation of an electrochemically active hydrogen bond (HB) complex structure. Raman and NMR spectroscopies, as well as molecular dynamic (MD) simulations, helped elucidate the ratio among all compounds (e.g., solvents and IL) in the HB complex structure that best works as an electrolyte. For instance, the eutectic mixture of H2O and dimethylsulfoxide (DMSO) in a 2 to 1 molar ratio primary HB complex structures with mixed EMIMBF4 offers a low melting point and low flammability, then add acetonitrile (CH3CN) in different molar ratios providing an improvement of the rate capability to the resulting electrolyte. As compared to other electrolytes, the TSIS electrolyte composed in a molality of 5.8 m (TSIS-5.8) showed the cost efficiency and exhibited a low self-extinction rate. Moreover, SCs operating with TSIS-5.8, at -70 °C and up to 2.7 V provided energy densities of ca. 49 and 18 Wh kg-1, respectively, power densities of 10,000 and 17,000 W kg-1, the capacitance retention of ca. 82% after 15,000 cycles at 4 A g-1 and a self-discharge as low as 22%. The use of ternary solvent mixtures combining different solvents in the proper molar ratios opens up an easy and low-cost path to design many new electrolytes in terms of non-flammability, non-toxicity, high electrical conductivity, and wide electrochemical stability window (ESW). Forthcoming research could use the knowledge provided by this work in terms of ions solvation and transport in TSIS electrolytes and explore the interfacial interactions between electrolyte and electrode material to determine their respective relevance in the performance of SCs. Keywords: tri-solvent-in-salt (TSIS), hydrogen bond, eutectic mixtures, supercapacitors Reference : [1] F. Béguin, et al. Carbons and electrolytes for advanced supercapacitors. Adv. Mater., 26 (2014), 2219-2251. [2] Q. Dou, et al. Safe and high-rate supercapacitors based on an ‘‘Acetonitrile/Water in Salt’’ hybrid electrolyte. Energy Environ. Sci, 11 (2018), 3212-3219. [3] X. Lu, et al. Aqueous-Eutectic-in-Salt Electrolytes for High-Energy-Density Supercapacitors with an Operational Temperature Window of 100 °C, from −35 to +65 °C. ACS Appl. Mater. Interfaces 2020, 12, 26, 29181–29193. [4] X. Lu, et al. Aqueous Co-Solvent in Zwitterionic-based Protic Ionic Liquids as Electrolytes in 2.0 V Supercapacitors. ChemSusChem 2020, 13, 5983. [5] X. Lu, et al. EMIMBF4 in ternary liquid mixtures of water, dimethyl sulfoxide and acetonitrile as “tri-solvent-in-salt” electrolytes for high-performance supercapacitors operating at -70 °C. Energy Storage Mater., 40, (2021), 368-385.
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Ashraf, Juveiriah M., Myriam Ghodhbane, and Chiara Busa. "The Effect of Ionic Carriers and Degree of Solidification on the Solid-State Electrolyte Performance for Free-Standing Carbon Nanotube Supercapacitor." ECS Meeting Abstracts MA2022-02, no. 7 (October 9, 2022): 2490. http://dx.doi.org/10.1149/ma2022-0272490mtgabs.

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To eliminate electrolyte leakage, the development of safe and flexible supercapacitors necessitates solid-state electrolytes which integrate both high mechanical and electrochemical capabilities. Quasi-solid-state electrolytes, which constitute a polymer matrix along with an aqueous electrolytic phase, are a viable answer to this problem. Recently, gel electrolytes have gained a lot of attention in flexible and wearable electronic devices due to their remarkable advancements. However, the limitation in the multi-functional abilities and high-performance in such gels hinders the practical usage of such devices. On the electrochemical perspective, the performance of the gel electrolyte depends on the type of ionic carrier (acidic, alkaline, or salt-based), size of the ion, solvent concentration, type of polymer, as well as the interaction between the polymer and other components. Moreover, the performance of the electrolyte differs with the electrode-electrolyte interface and thus is highly dependent on the electrode material. For this reason, it is vital to carry a parametric study to evaluate the effect of the above stated. The aim of this study is to investigate the effect of changing the ionic carrier (namely H3PO4, KOH and LiCl) as well as the solvent concentration on architecturally engineered PVA-based electrolytes’ performance in free-standing CNT supercapacitor using a bio-based compound, cellulose as a binder. The dependence of the electrolyte’s mechanical structure for long term stability is further evaluated by using the optimized concentration of each (H3PO4, KOH and LiCl) by freezing and de-freezing the gel to form membrane-like films, as a result of the increased physical cross-linking. The supercapacitors are studied for their capacitance, charge/discharge capabilities as well their long-term stability and also compared with aqueous electrolyte for the three aforementioned ionic carriers.
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Wang, Jianji, Yang Zhao, Kelei Zhuo, and Ruisen Lin. "A partial-molar volume study of electrolytes in propylene carbonate-based lithium battery electrolyte solutions at 298.15 K." Canadian Journal of Chemistry 80, no. 7 (July 1, 2002): 753–60. http://dx.doi.org/10.1139/v02-092.

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Apparent molar volumes (V2, ϕ ) and standard partial-molar volumes (V20, ϕ ) of LiClO4 and LiBr at 298.15 K have been determined from precise density measurements in solvent mixtures of propylene carbonate (PC) with dimethylformamide (DMF), tetrahydrofuran (THF), acetonitrile (AN), and methyl formate (MF). The scaled particle theory is used to calculate the contributions of the cavity formation and the electrolyte-solvent interactions to the standard partial-molar volumes. It is shown that V20, ϕ is strongly dependent on the nature of the solvents, and the trends in V20, ϕ with composition of the solvent mixtures are determined by the interaction volumes of electrolytes with solvents. The results are discussed in terms of ionic preferential solvation, packing effect of solvents in the solvation shell, and electrostriction of solvents by ion.Key words: partial-molar volume, scaled particle theory, lithium salts, propylene carbonate, solvent mixtures, lithium battery electrolytes.
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Kadam, V. V., A. B. Nikumbh, T. B. Pawar, and V. A. Adole. "Density and Viscosity of LiCl, LiBr, LiI and Kcl in Aqueous Methanol at 313.15K." Oriental Journal Of Chemistry 37, no. 5 (October 30, 2021): 1083–90. http://dx.doi.org/10.13005/ojc/370510.

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The densities and viscosities of electrolytes are essential to understand many physicochemical processes that are taking place in the solution. In the present research, the densities and viscosities of lithium halides, LiX (X = Cl, Br, I ) and KCl in (0, 20, 40, 50, 60, 80 and 100) mass % of methanol + water at 313.15K were calculated employing experimental densities (ρ), the apparent molar volumes( ϕv) and limiting apparent molar volumes (0v) of the electrolytes. The (0v) of electrolyte offer insights into solute-solution interactions. In terms of the Jones-Dole equation for strong electrolyte solution, the experimental data of viscosity were explored. Viscosity coefficients A and B have been interpreted and discussed. The B-coefficient values in these systems increase with increase of methanol in the solvents mixtures. This implied that when the dielectric constant of the solvent decreases, so do the solvent-solvent interactions in these systems.
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Wang, Jianji, Yang Zhao, Kelei Zhuo, and Ruisen Lin. "Viscosity Properties of Electrolytes in Propylene Carbonate Based Lithium Battery Electrolyte Solutions." Zeitschrift für Physikalische Chemie 217, no. 6 (June 1, 2003): 637–52. http://dx.doi.org/10.1524/zpch.217.6.637.20445.

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AbstractViscosities of LiClO4 and LiBr have been measured in solvent mixtures of propylene carbonate (PC) with dimethylformamide (DMF), tetrahydrofuran (THF), acetonitrile (AN) and methyl formate (MF) at 298.15K. The dependence of viscosity on the composition of the mixed solvents was fitted with an equation without adjustable parameter. Viscosity B-coefficients for lithium salts and the corresponding activation free energies (Δμ0,≠) for viscous flow have been evaluated. At the same time, viscosity B-coefficients were predicted by the dielectric friction theory. The unsuccessful prediction of the composition dependence of the B-coefficients indicates that improvements will be necessary on the theory with taking account of the short-range interaction and molecular nature of the solvents. Furthermore, solute–solvent interactions in these mixed solvents are discussed in terms of the B-coefficients and activation parameters.
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Ren, Xiaodi, Peiyuan Gao, Lianfeng Zou, Shuhong Jiao, Xia Cao, Xianhui Zhang, Hao Jia, et al. "Role of inner solvation sheath within salt–solvent complexes in tailoring electrode/electrolyte interphases for lithium metal batteries." Proceedings of the National Academy of Sciences 117, no. 46 (November 3, 2020): 28603–13. http://dx.doi.org/10.1073/pnas.2010852117.

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Functional electrolyte is the key to stabilize the highly reductive lithium (Li) metal anode and the high-voltage cathode for long-life, high-energy-density rechargeable Li metal batteries (LMBs). However, fundamental mechanisms on the interactions between reactive electrodes and electrolytes are still not well understood. Recently localized high-concentration electrolytes (LHCEs) are emerging as a promising electrolyte design strategy for LMBs. Here, we use LHCEs as an ideal platform to investigate the fundamental correlation between the reactive characteristics of the inner solvation sheath on electrode surfaces due to their unique solvation structures. The effects of a series of LHCEs with model electrolyte solvents (carbonate, sulfone, phosphate, and ether) on the stability of high-voltage LMBs are systematically studied. The stabilities of electrodes in different LHCEs indicate the intrinsic synergistic effects between the salt and the solvent when they coexist on electrode surfaces. Experimental and theoretical analyses reveal an intriguing general rule that the strong interactions between the salt and the solvent in the inner solvation sheath promote their intermolecular proton/charge transfer reactions, which dictates the properties of the electrode/electrolyte interphases and thus the battery performances.
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Nguyen, Thuy-Duy Thi, Phuong Tuyet Nguyen, and Phuong Hoang Tran. "Dye-sensitized solar cells using deep eutectic solvents mixed with ethanol as an effective electrolyte medium." Science and Technology Development Journal 21, no. 1 (June 8, 2018): 15–23. http://dx.doi.org/10.32508/stdj.v21i1.424.

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This research aims to develop a new type of electrolyte for dye-sensitized solar cells (DSCs) which can be produced in cost-effective and large scale. DSCs using deep eutectic solvents (DESs) mixed with ethanol (50% w/w DES content), as an electrolyte medium, was studied herein for the first time. Ten types of DESs were synthesized and three among them were potential candidates for DSC electrolytes. Compared to toxic and volatile organic solvents, this mixed solvent is more eco-friendly and inexpensive. According to J-V curve measurements, DSCs that used DES-ethanol medium showed promising photovoltaic performance.
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Apolinário, Arlete, Célia T. Sousa, Gonçalo N. P. Oliveira, Armandina M. L. Lopes, João Ventura, Luísa Andrade, Adélio Mendes, and João P. Araújo. "Tailoring the Anodic Hafnium Oxide Morphology Using Different Organic Solvent Electrolytes." Nanomaterials 10, no. 2 (February 22, 2020): 382. http://dx.doi.org/10.3390/nano10020382.

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Highly ordered anodic hafnium oxide (AHO) nanoporous or nanotubes were synthesized by electrochemical anodization of Hf foils. The growth of self-ordered AHO was investigated by optimizing a key electrochemical anodization parameter, the solvent-based electrolyte using: Ethylene glycol, dimethyl sulfoxide, formamide and N-methylformamide organic solvents. The electrolyte solvent is here shown to highly affect the morphological properties of the AHO, namely the self-ordering, growth rate and length. As a result, AHO nanoporous and nanotubes arrays were obtained, as well as other different shapes and morphologies, such as nanoneedles, nanoflakes and nanowires-agglomerations. The intrinsic chemical-physical properties of the electrolyte solvents (solvent type, dielectric constant and viscosity) are at the base of the properties that mainly affect the AHO morphology shape, growth rate, final thickness and porosity, for the same anodization voltage and time. We found that the interplay between the dielectric and viscosity constants of the solvent electrolyte is able to tailor the anodic oxide growth from continuous-to-nanoporous-to-nanotubes.
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Sedlak, Petr, Pavel Kaspar, Dinara Sobola, Adam Gajdos, Jiri Majzner, Vlasta Sedlakova, and Petr Kubersky. "Solvent Evaporation Rate as a Tool for Tuning the Performance of a Solid Polymer Electrolyte Gas Sensor." Polymers 14, no. 21 (November 6, 2022): 4758. http://dx.doi.org/10.3390/polym14214758.

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Solid polymer electrolytes show their potential to partially replace conventional electrolytes in electrochemical devices. The solvent evaporation rate represents one of many options for modifying the electrode–electrolyte interface by affecting the structural and electrical properties of polymer electrolytes used in batteries. This paper evaluates the effect of solvent evaporation during the preparation of solid polymer electrolytes on the overall performance of an amperometric gas sensor. A mixture of the polymer host, solvent and an ionic liquid was thermally treated under different evaporation rates to prepare four polymer electrolytes. A carbon nanotube-based working electrode deposited by spray-coating the polymer electrolyte layer allowed the preparation of the electrode–electrolyte interface with different morphologies, which were then investigated using scanning electron microscopy and Raman spectroscopy. All prepared sensors were exposed to nitrogen dioxide concentration of 0–10 ppm, and the current responses and their fluctuations were analyzed. Electrochemical impedance spectroscopy was used to describe the sensor with an equivalent electric circuit. Experimental results showed that a higher solvent evaporation rate leads to lower sensor sensitivity, affects associated parameters (such as the detection/quantification limit) and increases the limit of the maximum current flowing through the sensor, while the other properties (hysteresis, repeatability, response time, recovery time) change insignificantly.
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Tang, Lufan, Qiang Wei, Jiawei Yan, Yudi Hu, Xuncai Chen, Guannan Wang, Su Htike Aung, Than Zaw Oo, Dongliang Yan, and Fuming Chen. "Redox Flow Capacitive Deionization in a Mixed Electrode Solvent of Water and Ethanol." Journal of The Electrochemical Society 169, no. 1 (January 1, 2022): 013501. http://dx.doi.org/10.1149/1945-7111/ac47e9.

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In redox flow electrode capacitive deionization (FCDI), the solubility of the redox electrolyte and flowability of the carbon slurry have a great influence on the salt removal rate and energy consumption. In this work, a mixed solvent electrolyte is proposed for FCDI, which consists of iodide/triiodide redox couples and a carbon slurry in a mixed solvent of water and ethanol (1:1). At a current density of 5 mA cm−2, the salt removal rate in the mixed solvent can reach up to 2.72 μg cm−2 s−1, which is much higher than the value of 1.74 μg cm−2 s−1 and 2.37 μg cm−2 s−1 obtained in aqueous and ethanol solutions, respectively. This is attributed to the fast transport of ions during the redox reaction in organic solvents and the excellent flowability of the carbon slurry under aqueous conditions, which can provide more reaction sites for iodide/triiodide redox reactions and faster electron transportation. This unique FCDI with organic and aqueous mixed solvent electrolytes provides a new perspective for the development of redox flow electrochemical desalination.
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Dissertations / Theses on the topic "Electrolyte solvent"

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Klein, Jeffrey M. "Electrode-Electrolyte and Solvent-Solute Interfaces of Concentrated Electrolytes: Ionic Liquids and Deep Eutectic Solvents." Case Western Reserve University School of Graduate Studies / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=case1620213066452923.

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Urata, Tomoko. "Morphology Control of Anodized Porous Silicon from the Viewpoint of Solvent in Electrolyte Solutions." 京都大学 (Kyoto University), 2016. http://hdl.handle.net/2433/217176.

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Higashino, Shota. "Electrodeposition of reactive metals and alloys from non-aqueous electrolytes and their applications." Kyoto University, 2020. http://hdl.handle.net/2433/259066.

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Dougassa, Yvon. "Propriétés de transport et solubilité des gaz dans les électrolytes pour les batteries lithium-ion." Thesis, Tours, 2014. http://www.theses.fr/2014TOUR4035/document.

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Lors du fonctionnement des batteries Li-ion, la dégradation progressive de l’électrolyte engendre la génération des gaz qui sont à l’origine du phénomène des surpressions dans ces dispositifs, et a pour conséquence des problèmes de sécurité. Cette thèse aborde l’étude de la solubilité des gaz issus des réactions de dégradation des électrolytes tels que le CO2, CH4, ou encore C2H4 dans plusieurs systèmes simples (solvants purs) ou complexes (mélanges binaires, ternaires et quaternaires avec sel de lithium), en fonction de la température, de la structure des solvants et des sels, ainsi que de leurs concentrations en solution. A cet effet, nous avons mesuré préalablement les propriétés volumétriques, de transport, ainsi que les pressions de vapeur des électrolytes formulés en fonction de la composition et de la température
The performance and the safety of a lithium-ion battery depend to a great extent on the stability of the electrolyte solution, because the high voltage of the battery may cause the decomposition of lithium salt or organic solvents, which limits then the battery lifetime. During these degradations, several gases are, generally, generated like the CO2, CO, CH4 and C2H4, which induce in fact several problems related to the pressure increase inside the sealed cell. The main objective of this PhD thesis is to understand the key thermodynamic parameters which drive the gas dissolution in classical solvents and electrolytes. For that, several pure solvents and electrolytes have been firstly investigated to determine their volumetric and transport properties, as well as, their vapour pressure as the function of temperature and composition
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Engstrom, Allison Michelle. "Vanadium Oxide Electrochemical Capacitors| An Investigation into Aqueous Capacitive Degradation, Alternate Electrolyte-Solvent Systems, Whole Cell Performance and Graphene Oxide Composite Electrodes." Thesis, University of California, Berkeley, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3616666.

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Vanadium oxide has emerged as a potential electrochemical capacitor material due to its attractive pseudocapacitive performance; however, it is known to suffer from capacitive degradation upon sustained cycling. In this work, the electrochemical cycling behavior of anodically electrodeposited vanadium oxide films with various surface treatments in aqueous solutions is investigated at different pH. Quantitative compositional analysis and morphological studies provide additional insight into the mechanism responsible for capacitive degradation. Furthermore, the capacitance and impedance behavior of vanadium oxide electrochemical capacitor electrodes is compared for both aqueous and nonaqueous electrolyte-solvent systems. Alkali metal chloride and bromide electrolytes were studied in aqueous systems, and nonaqueous systems containing alkali metal bromides were studied in polar aprotic propylene carbonate (PC) or dimethyl sulfoxide (DMSO) solvents. The preferred aqueous and nonaqueous systems identified in the half-cell studies were utilized in symmetric vanadium oxide whole-cells. An aqueous system utilizing a 3.0 M NaCl electrolyte at pH 3.0 exhibited an excellent 96% capacitance retention over 3000 cycles at 10 mV s-1. An equivalent system tested at 500 mV s-1 displayed an increase in capacitance over the first several thousands of cycles, and eventually stabilized over 50,000 cycles. Electrodes cycled in nonaqueous 1.0 M LiBr in PC exhibited mostly non-capacitive charge-storage, and electrodes cycled in LiBr-DMSO exhibited a gradual capacitive decay over 10,000 cycles at 500 mV s-1. Morphological and compositional analyses, as well as electrochemical impedance modeling, provide additional insight into the cause of the cycing behavior. Lastly, reduced graphene oxide and vanadium oxide nanowire composites have been successfully synthesized using electrophoretic deposition for electrochemical capacitor electrodes. The composite material was found to perform with a higher capacitance than electrodes containing only vanadium oxide nanowires by a factor of 4.0 at 10 mV s-1 and 7.5 at 500 mV s-1. The thermally reduced composite material was examined in both symmetric and asymmetric whole cell electrochemical capacitor devices, and although the asymmetric cell achieved both higher energy and power density, the symmetric cell retained a higher capacitance over 50,000 cycles at 200 mV s-1.

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Boisset, Aurelien. "Electrolytes pour supercondensateurs asymétriques à base de MnO2." Thesis, Tours, 2014. http://www.theses.fr/2014TOUR4038/document.

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Cette thèse a pour but de caractériser le fonctionnement de supercondensateurs asymétriques composés de dioxyde de manganèse de structure birnessite et de carbone activé dans différents électrolytes. Les électrolytes aqueux neutres à base de sels inorganiques montrent les meilleures performances électrochimiques. La nature et la structure des cations et des anions du sel semblent impacter les performances électrochimiques et la stabilité de la structure du matériau d’oxyde de manganèse. Lors de cyclage en milieu aqueux avec de large de fenêtre de tension de fonctionnement appliquée, un mécanisme de dégradation du dispositif a été avancé tenant compte de la nature des anions ou des cations des sels utilisés. Quelques voies de modification du matériau MnO2, afin d’améliorer ces performances électrochimiques, ont été étudiés. Des électrolytes non aqueux originaux ont été également caractérisés et plus particulièrement, les solvants « Deep Eutectic » à base de N-méthylacétamide et de sels de Lithium. Ces derniers semblent prometteurs comme électrolytes pour des applications en température sur carbone activé ou matériaux d’insertion tels que le ferrophosphate de lithium. Cependant ils semblent non adaptés aux oxydes de manganèse, mais donnent de bons résultats en cyclage avec le carbone activé
The aim of this thesis was to investigate the performances of asymmetric supercapacitors based on manganese dioxide (birnessite) and activated carbon electrode materials using various electrolytes. From this work, it appears that neutral aqueous electrolytes containing inorganic salts have the best electrochemical performances. Furthermore, the nature and the structure of both ions (cations and anions) in solution seem to impact strongly the electrochemical performances of the supercapacitors, as well as, the MnO2’s structure stability and affinity. In the case of aqueous-based electrolyte, a device degradation mechanism has been proposed as a function of salt ions structure and nature to further understand the supercapacitor’s life-cycling when a large potential window is applied. Some novel synthesis ways and/or modifications were investigated to further improve the electrochemical properties of MnO2 material. Additionaly, original non-aqueous electrolytes has been also formulated and then characterized, particularly the ‘Deep Eutectic’ Solvents, based on the N-methylacetamide mixed with a lithium salt. However, these electrolytes don’t have a good affinity with manganese oxide-based materials. Interestingly, these Deep Eutectic Solvents show good cycling results with activated carbon. In fact, these electrolytes seem to be promising for high temperature energy storage applications, especially using activated carbon or insertion electrode material like the lithium ferrophosphate
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Perricone, Emmanuelle. "Mise au point d'electrolytes innovants et performants pour supercondensateurs." Phd thesis, Université de Grenoble, 2011. http://tel.archives-ouvertes.fr/tel-00630049.

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L'objectif de cette thèse est de développer et d'optimiser un électrolyte organique performant et sécuritaire pour supercondensateur. En effet, l'acétonitrile est un solvant couramment employé dans la conception des électrolytes, mais celui-ci étant inflammable, il faut lui trouver une alternative performante. Différentes familles de solvants ont été évaluées. Les solvants stables d'un point de vue électrochimique ont été sélectionnés en vue de leur utilisation dans des électrolytes. Dans le but de trouver un compromis entre mobilité et concentration ionique, des mélanges de solvants ont été réalisés. L'addition de solvants peu visqueux comme des esters ou le méthoxypropionitrile dans l'éthylène carbonate et le sulfolane ont permis d'obtenir des électrolytes performants. L'étude des interactions solvant / solvant et solvant / sel ont été menées par des mesures calorimétriques, viscosimétriques et spectroscopiques. Ces interactions, bien que de très faible amplitude, permettent d'augmenter notablement la température d'évaporation du solvant volatil de l'électrolyte, donc son point éclair.
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Yao, N'guessan Alfred. "Contribution a l'etude des jonctions gaas-electrolyte aqueux et non aqueux : formation de l'interface et cinetique de transfert de charges." Paris 7, 1987. http://www.theses.fr/1987PA077174.

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Benzakour, Bouchra. "Ultramicroélectrochimie analytique : étude des phénomènes de transport de matière lors des réactions électrochimiques : application aux réactions engageant des étapes successives." Nancy 1, 1993. http://www.theses.fr/1993NAN10004.

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Les techniques ultramicroélectrochimiques engageant des électrodes de très faibles dimensions ont été appliquées à l'étude des phénomènes de transport de matière en absence d'électrolyte support lors des réactions électrochimiques. L'analyse des effets de migration a porté d'abord sur des transformations électrochimiques engageant une seule étape. Le comportement des systèmes i-/i#3#, br#/br#3#, br#/br#2 et le système du diphenylpicrylhydrazyle dpph-/dpph dans les solvants organiques a été précisé. La variation des courants limites en présence ou absence d'électrolyte a pu être quantifiée simplement. L'analyse a été étendue à des systèmes engageant plusieurs etapes, les uns faisant intervenir des espèces chargées (i#/i#3#/i#2, br#/br#3#/br#2, br#/br#2/br#+ et dpph#/dpph/dpph#+), les autres faisant intervenir des espèces moléculaires (la réduction du tetracyanoquinodimethane (tcnq), l'oxydation de la tetramethyl-p-phenylenediamine (tmppd) et la réduction de l'iode). Les effets d'exaltation sont également prévisibles à partir du modèle proposé
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Dubois, Corinne. "Sur les proprietes des couches de surface du lithium dans les accumulateurs a electrolytes organiques aprotiques." Paris 6, 1987. http://www.theses.fr/1987PA066345.

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Books on the topic "Electrolyte solvent"

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Jeffers, T. H. Minimizing lead contamination in copper produced by solvent extraction-electrowinning. Pittsburgh, Pa: United States Dept. of the Interior, Bureau of Mines, 1985.

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H, Krienke, and Kunz Werner 1922-, eds. Physical chemistry of electrolyte solutions: Modern aspects. Darmstadt: Steinkopf, 1998.

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Kunz, Werner, Josef M. G. Barthel, and Hartmut Krienke. Physical Chemistry of Electrolyte Solutions: Modern Aspects (Topics in Physical Chemistry). Steinkopff-Verlag Darmstadt, 2002.

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Bochove, Gerard Van. Two and Three-Liquid Phase Equilibria in Industrial Mixed Solvent Electrolyte Solutions: Experiments & Modelling of Systems of Importance for the Extraction of Caprolactam. Delft Univ Pr, 2003.

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Barthel, Josef, R. Neueder, and P. Schroder. Electrolyte Data Collection: Conductivities, Transference Numbers, and Limiting Lonic Conductivities of Solutions of Aprotic, Protophobic Solvents (Chemistry Data Series, V. 12.). Dechema, 1996.

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United States. Bureau of Mines., ed. Electrochemical reduction of titanium in nonaqueous solvents. [Washington, D.C.?]: U.S. Dept. of the Interior, Bureau of Mines, 1995.

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Yuan, Du, Gen Chen, Chuankun Jia, and Haitao Zhang, eds. Deep Eutectic Solvents/Complex Salts-Based Electrolyte for Next Generation Rechargeable Batteries. Frontiers Media SA, 2021. http://dx.doi.org/10.3389/978-2-88966-376-7.

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(Editor), Christopher S. Brazel, and Robin D. Rogers (Editor), eds. Ionic Liquids in Polymer Systems: Solvents, Additives, and Novel Applications (Acs Symposium Series). An American Chemical Society Publication, 2005.

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(Editor), Josef Barthel, and R. Neueder (Editor), eds. Electrolyte Data Collection: Conductivities, Transference Numbers, & Limiting Ionic Conductivities of Solutions of Aprotic, Protophobic Solvents III & IV (Dechema Chemistry Data Series). Dechema, 2000.

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Maemets, Vahur. The 17 0 and 1H nuclear magnetic resonance study of H2O in individual solvents and its charged clusters in aqueous solutions of electrolytes. Tartu, 1997.

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Book chapters on the topic "Electrolyte solvent"

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Haas, Paul, Stefan Pfeifer, Jannes Müller, Christian Bradtmöller, and Stephan Scholl. "Separation of the Electrolyte—Solvent Extraction." In Sustainable Production, Life Cycle Engineering and Management, 155–76. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-70572-9_9.

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Königsberger, Erich. "Prediction of Electrolyte Solubilities from Minimal Thermodynamic Information." In Highlights in Solute-Solvent Interactions, 127–50. Vienna: Springer Vienna, 2002. http://dx.doi.org/10.1007/978-3-7091-6151-7_7.

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Caudle, Benjamin, Toni E. Kirkes, Cheng-Hsiu Yu, and Chau-Chyun Chen. "THERMODYNAMIC MODELING OF AQUEOUS AND MIXED SOLVENT ELECTROLYTE SYSTEMS." In Chemical Engineering in the Pharmaceutical Industry, 493–504. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2019. http://dx.doi.org/10.1002/9781119600800.ch21.

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Lee, Yu Jin, Yun Kyung Jo, Hyun Park, Ho Hwan Chun, and Nam Ju Jo. "Solvent Effect on Ion Hopping of Solid Polymer Electrolyte." In Materials Science Forum, 1049–52. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-431-6.1049.

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Walter, Jonathan, Stephan Deublein, Steffen Reiser, Martin Horsch, Jadran Vrabec, and Hans Hasse. "Atomistic Simulations of Electrolyte Solutions and Hydrogels with Explicit Solvent Models." In High Performance Computing in Science and Engineering '11, 185–99. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-23869-7_15.

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Holze, Rudolf. "Transference numbers of Br− ion in mixed-solvent-based electrolyte solutions." In Electrochemistry, 2240. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-49251-2_1981.

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Holze, Rudolf. "Transference numbers of Cl− ion in mixed-solvent-based electrolyte solutions." In Electrochemistry, 2241. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-49251-2_1982.

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Holze, Rudolf. "Transference numbers of F− ion in mixed-solvent-based electrolyte solutions." In Electrochemistry, 2242–43. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-49251-2_1983.

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Holze, Rudolf. "Transference numbers of H+ ion in mixed-solvent-based electrolyte solutions." In Electrochemistry, 2244–47. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-49251-2_1984.

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Holze, Rudolf. "Transference numbers of I− ion in mixed-solvent-based electrolyte solutions." In Electrochemistry, 2248. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-49251-2_1985.

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Conference papers on the topic "Electrolyte solvent"

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Neria, Eyal, and Abraham Nitzan. "Numerical studies of solvation dynamics in electrolyte solutions." In Ultrafast reaction dynamics and solvent effects. AIP, 1994. http://dx.doi.org/10.1063/1.45391.

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Kiefer, Rudolf, Jose G. Martinez, Toribio F. Otero, Arko Kesküla, Friedrich Kaasik, Madis Harjo, Robert Valner, Vishwaja Vaddepally, Anna-Liisa Peikolainen, and Alvo Aabloo. "Solvent and electrolyte effects in PPyDBS free standing films." In SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, edited by Yoseph Bar-Cohen. SPIE, 2015. http://dx.doi.org/10.1117/12.2084195.

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Kityk, Anna, Natalia Bannyk, and Olena Kun. "Deep Eutectic Solvent Reline − Highly Efficient Electrolyte For Stainless Steel Electropolishing." In Chemical technology and engineering. Lviv Polytechnic National University, 2019. http://dx.doi.org/10.23939/cte2019.01.153.

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Nesbitt, Nathan, and Wilson Smith. "Electrochemical AFM techniques to understand cathode topography and electrolyte solvent and solute activities." In nanoGe Fall Meeting 2021. València: Fundació Scito, 2021. http://dx.doi.org/10.29363/nanoge.nfm.2021.059.

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Tanaka, Motohiko. "Charge Inversion of a Macroion in Electrolyte Solvent: A Rotating Rod with Polyelectrolyte Counterions." In SLOW DYNAMICS IN COMPLEX SYSTEMS: 3rd International Symposium on Slow Dynamics in Complex Systems. AIP, 2004. http://dx.doi.org/10.1063/1.1764145.

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Westhoff, Kevin, and Todd M. Bandhauer. "Multi-Functional Electrolyte for Thermal Management of Lithium-Ion Batteries." In ASME 2016 14th International Conference on Fuel Cell Science, Engineering and Technology collocated with the ASME 2016 Power Conference and the ASME 2016 10th International Conference on Energy Sustainability. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/fuelcell2016-59460.

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The high thermal conduction resistances of lithium-ion batteries severely limits the effectiveness of conventional external thermal management systems. To remove heat from the insulated interior portions of the cell, a large temperature difference is required across the cell, and the center of the electrode stack can exceed the thermal runaway onset temperature even under normal cycling conditions. One potential solution is to remove heat locally inside the cell by evaporating a volatile component of the electrolyte. In this system, a high vapor pressure co-solvent evaporates at a low temperature prior to triggering thermal runaway. The vapor generated is transported to the skin of the cell, where it is condensed and transported back to the internal portion of the cell via surface tension forces. For this system to function, a co-solvent that has a boiling point below the thermal runaway onset temperature must also allow the cell to function under normal operating conditions. Low boiling point hydrofluoroethers (HFE) were first used by Arai to reduce LIB electrolyte flash points, and have been proven to be compatible with LIB chemistry. In the present study, HFE-7000 and ethyl methyl carbonate (EMC) 1:1 by volume are used to solvate 1.0 M LiTFSI to produce a candidate electrolyte for the proposed cooling system. Copper antimonide (Cu2Sb) and lithium iron phosphate (LiFePO4) are used in a full cell architecture with the candidate electrolyte in a custom electrolyte boiling facility. The facility enables direct viewing of the vapor generation within the full cell and characterizes the galvanostatic electrochemical performance. Test results show that the LFP/Cu2Sb cell is capable of operation even when a portion of the more volatile HFE-7000 is continuously evaporated.
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Christenn, C., A. Ansar, A. Haug, S. Wolf, and J. Arnold. "The Solution Precursor Plasma Spray Process for Making Zirconia based Electrolytes." In ITSC2011, edited by B. R. Marple, A. Agarwal, M. M. Hyland, Y. C. Lau, C. J. Li, R. S. Lima, and 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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Boldrini, Chiara Liliana, Norberto Manfredi, Filippo Maria Perna, Vito Capriati, and Alessandro Abbotto. "Introducing eco-friendly hydrophilic and hydrophobic deep eutectic solvent electrolyte solutions for dye-sensitized solar cells." In 13th Conference on Hybrid and Organic Photovoltaics. València: Fundació Scito, 2021. http://dx.doi.org/10.29363/nanoge.hopv.2021.055.

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Kazemiabnavi, Saeed, Prashanta Dutta, and Soumik Banerjee. "Ab Initio Modeling of the Electron Transfer Reaction Rate at the Electrode-Electrolyte Interface in Lithium-Air Batteries." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-40239.

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Lithium-air batteries are very promising energy storage systems for meeting current demands in electric vehicles. However, the performance of these batteries is highly dependent on the electrochemical stability and physicochemical properties of the electrolyte such as ionic conductivity, vapor pressure, static and optical dielectric constant, and ability to dissolve oxygen and lithium peroxide. Room temperature ionic liquids, which have high electrical conductivity, wide electrochemical stability window and also low vapor pressure, are considered potential electrolytes for these batteries. Moreover, since the physicochemical and electrochemical properties of ionic liquids are dependent on the structure of their constitutive cations and anions, it is possible to tune these properties by choosing from various combinations of cations and anions. One of the important factors on the performance of lithium-air batteries is the local current density. The current density on each electrode can be obtained by calculating the rate constant of the electron transfer reactions at the surface of the electrode. In lithium-air batteries, the oxidation of pure lithium metal into lithium ions happens at the anode. In this study, Marcus theory formulation was used to calculate the rate constant of the electron transfer reaction in the anode side using the respective thermodynamics data. The Nelsen’s four-point method of separating oxidants and reductants was used to evaluate the inner-sphere reorganization energy. In addition, the Conductor-like Screening Model (COSMO) which is an approach to dielectric screening in solvents has been implemented to investigate the effect of solvent on these reaction rates. All calculations were done using Density Functional Theory (DFT) at B3LYP level of theory with a high level 6-311++G** basis set which is a Valence Triple Zeta basis set with polarization and diffuse on all atoms (VTZPD) that gives excellent reproducibility of energies. Using this methodology, the electron transfer rate constant for the oxidation of lithium in the anode side was calculated in an ionic liquids electrolyte. Our results present a novel approach for choosing the most appropriate electrolyte(s) that results in enhanced current densities in these batteries.
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Jubery, Talukder Zaki, Danny R. Bottenus, Prashanta Dutta, and Cornelius F. Ivory. "Preconcentration of Cardiac Proteins in a Microfluidic Device." In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-10772.

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Preconcentration of cardiac proteins was demonstrated using isotachophoresis (ITP) on a polymethyl methacrylate (PMMA) microchip. PMMA microchip was formed using solvent imprinting and temperature-assisted solvent bonding. ITP experiments were performed on two types of microchip: one containing straight microchannel and the other one with 10X step reducing microchannel. In ITP experiments, Hydrochloric Acid (HCl) was used as leading electrolyte, while Aminocaproic Acid (EACA) was used as terminating electrolyte. Three fluorescent proteins, cTnI Labeled w/ Pacific Blue, Green Fluorescent Protein (GFP) and R-Phycoerythrin (PE), were allowed to separate and concentrate in presence of a constant electric field. Microchip ITP experiments show that the sample proteins were concentrated and stacked into adjacent zones. The final concentration of protein zones were calculated from the microchannel dimensions and initial volume of proteins. In straight microchannel, the concentration factors for PE, GFP, and cTnI proteins were 80, 40, and 30, respectively. The concentration factors were 10 fold higher in the step reducing microchannel.
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Reports on the topic "Electrolyte solvent"

1

Cummings, P. T., and J. P. O'Connell. Theoretical and experimental study of mixed solvent electrolytes. Office of Scientific and Technical Information (OSTI), January 1990. http://dx.doi.org/10.2172/6453447.

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Cummings, P. T., and J. P. O'Connell. Theoretical and experimental study of mixed solvent electrolytes. Office of Scientific and Technical Information (OSTI), July 1991. http://dx.doi.org/10.2172/6957847.

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Robert Filler, Zhong Shi and Braja Mandal. Highly Conductive Solvent-Free Polymer Electrolytes for Lithium Rechargeable Batteries. Office of Scientific and Technical Information (OSTI), October 2004. http://dx.doi.org/10.2172/833727.

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P.T. Cummings and J.P. O'Connell. Theoretical and experimental study of mixed solvent electrolytes. Final report. Office of Scientific and Technical Information (OSTI), January 1995. http://dx.doi.org/10.2172/764042.

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Cummings, P. T., and J. P. O`Connell. Theoretical and experimental study of mixed solvent electrolytes. Final report, July 1, 1988--December 31, 1991. Office of Scientific and Technical Information (OSTI), July 1991. http://dx.doi.org/10.2172/10184701.

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Cummings, P. T. Theoretical and experimental study of mixed solvent electrolytes. Final report, February 1, 1994--January 31, 1995. Office of Scientific and Technical Information (OSTI), December 1995. http://dx.doi.org/10.2172/10176991.

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