|
ИСТИНА |
Войти в систему Регистрация |
ИСТИНА ЦЭМИ РАН |
||
Electrolyte mixture based on acetonitrile and ethyl acetate for a wide temperature range performance of the supercapacitorsстатья Исследовательская статья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 12 января 2022 г.
- Авторы: Galimzyanov R.R., Stakhanova S.V., Krechetov I.S., Kalashnik A.T., Astakhov M.V., Lisitsin A.V., Rychagov A.Yu, Galimzyanov T.R., Tabarov F.S.
- Журнал: Journal of Power Sources
- Том: 495
- Год издания: 2021
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Номер статьи: 229442
- DOI: 10.1016/j.jpowsour.2020.229442
- Аннотация: This work presents the development of the electrolyte, ensuring stable operation of the supercapacitors (SC) in a wide temperature range from −60 °C to +60 °C and suitable for commercialization. SC cells based on this electrolyte have high cyclic stability of capacitance at +60 °C and provide high discharge current after a long dwelling time in a charged state at −60 °C. We have investigated electrochemical characteristics of SC based on various electrolyte mixtures optimized with co-solvents such as ethyl acetate, propyl acetate, and butyl acetate in a temperature range from −60 to +60 °C. Methyl triethylammonium tetrafluoroborate (CH3)(C2H5)3NBF4 (TEMA∙TFB) in various concentrations (0.7–1.2 M) was used as a basic salt for measurements. According to electrochemical impedance spectroscopy data, the time constant values grows with an increase of ethyl acetate concentration. We found that cells based on electrolyte, containing 30 vol% ethyl acetate and 1.2 M TEMA TFB, provides optimal capacitive behavior of SCs with the high-performance features in a wide temperature range from −60 up to +60 °C. The capacitance of SC based on the developed electrolytes at −60 °C differs from the corresponding values at room temperature by no more than 10%.
- Добавил в систему: Рычагов Алексей Юрьевич