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Your search keyword '"Abunaeva, Lilia"' showing total 13 results
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13 results on '"Abunaeva, Lilia"'

8. Redox flow batteries: role in modern electric power industry and comparative characteristics of the main types

Author

Petrov, Mikhail M., primary, Modestov, Alexander D., additional, Konev, Dmitriy V., additional, Antipov, Anatoly E., additional, Loktionov, Pavel A., additional, Pichugov, Roman D., additional, Kartashova, Natalya V., additional, Glazkov, Artem T., additional, Abunaeva, Lilia Z., additional, Andreev, Vladimir N., additional, and Vorotyntsev, Mikhail A., additional

Published
2021
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9. Fluoropolymer impregnated graphite foil as a bipolar plates of vanadium flow battery.

Author

Loktionov, Pavel, Kartashova, Natalia, Konev, Dmitry, Abunaeva, Lilia, Antipov, Anatoly, Ruban, Eugeny, Terent'ev, Alexander, Gvozdik, Natalia, Lyange, Maria, Usenko, Andrey, and Stevenson, Keith

Subjects
VANADIUM redox battery, GRAPHITE, DIFLUOROETHYLENE, FLUOROPOLYMERS, FLOW batteries, COMPOSITE materials, MATERIALS testing, VANADIUM
Abstract

Summary: Renewable energy in recent years plays an increasingly important role in the energy industry. Therefore, the problem of inventing efficient and affordable energy storage devices is of current importance. Vanadium redox flow battery stands out between a wide range of various chemical sources of electric energy. Discovering the way for optimizing the price of energy storage is one of the most important questions of the mentioned battery. New graphite‐polymer composite materials study shows that they may become a replacement for commonly used brittle graphite. The current article presents the study of graphite foil (or flexible graphite) filling with a copolymer of tetrafluoroethylene and vinylidene fluoride F‐42 properties. The article uses an implementation approach of putting the fluoropolymer into the pores of graphite foil, which shows a slight decrease in electrical conductivity, while a significant increase in its electrochemical stability in comparison with untreated graphite foil. Testing results of such material as current collectors (or bipolar plates) in a single membrane‐electrode assembly of vanadium redox flow battery cell show peak value of discharge power density of 843 mW/cm2, energy efficiency of 78%‐79% during cycling at 200 mA/cm2 allowing us to assume the possibility of its successful application in redox flow battery stacks. [ABSTRACT FROM AUTHOR]

Published
2022
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13. Bromine Crossover in Operando Analysis of Proton Exchange Membranes in Hydrogen-Bromate Flow Batteries.

Author

Modestov A, Kartashova N, Pichugov R, Petrov M, Antipov A, and Abunaeva L

Abstract

The manuscript deals with the fundamental problem of platinum hydrogen oxidation catalyst poisoning of the hybrid chemical power source based on bromate electroreduction and hydrogen electro-oxidation reactions. The poisoning is caused by the crossover of bromine-containing species through the proton exchange membrane separating compartments of the flow cell. Poisoning results in a drastic decrease in the flow cell performance. This paper describes the results of the direct measurement of bromine-containing species' crossover through perfluorosulfonic acid membranes of popular vendors in a hydrogen-bromate flow cell and proposes corresponding scenarios for the flow battery charge-discharge operation based on the electrolyte's control of the pH value. The rate of the crossover of the bromine-containing species through the membrane is found to be inversely proportional to the membrane thickness.

Published
2022
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