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The Effect of Redox Electrolyte on the Electrochemical Characteristics of a PEDOT–(Sodium 1,2-Naphthoquinone-4-sulfonate)/WMNT Nanocomposite Electrodeстатья
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 15 февраля 2024 г.
- Авторы: Shumakovich G.P., Vasilyeva I.S., Emets V.V., Bogdanovskaya V.A., Kuzov A.V., Andreev V.N., Morozova O.V., Yaropolov A.I.
- Журнал: Protection of Metals and Physical Chemistry of Surfaces
- Том: 59
- Номер: 4
- Год издания: 2023
- Издательство: Pleiades Publishing, Ltd
- Местоположение издательства: Road Town, United Kingdom
- Первая страница: 587
- Последняя страница: 594
- DOI: 10.1134/s2070205123700843
- Аннотация: The methods of cyclic voltammetry, galvanostatic charge–discharge, and electrochemical impedancespectroscopy were used to study the effect of electrolyte redox on the electrochemical characteristics of a composite based on a poly(3,4-ethylenedioxythiophene) (PEDOT) conducting polymer and multiwalled carbon nanotubes (MWCNTs). To form a uniform thin layer of PEDOT on the surface of nanotubes, an enzymatic polymerization of the monomer was used. The electrochemically active compound sodium 1,2-naphthoquinone-4-sulfonate (NQS) was a dopant in the main PEDOT chain and, at the same time, a component of the electrolyte. The addition of 12.5 mM NQS to the electrolyte increased the specific capacitance of the PEDOT–NQS/MWCNT composite electrode from 390 to 800 F/g at a potential sweep rate of 10 mV/s. In a 1 M H2SO4 + 12.5 mM NQS redox electrolyte, the composite electrode exhibited higher cyclic stability and lower charge transfer resistance compared to 1 M H2SO4. After 1000 cycles of potential scanning in the range from –0.1 to 0.8 V at a rate of 100 mV/s, the specific capacitance of the composite electrode in a solution of 1 M H2SO4 decreased by 8%, and in a solution of 1 M H2SO4 + 12.5 mm NQS increased by approximately 9%.
- Добавил в систему: Емец Виктор Владимирович