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Kinetics of Oxidation of Reduced Forms of Adsorbed CO2 on a (pc)Pt Electrode in Saturated H2CO3 under Quasi-Equilibrium Conditions: The Effect of the Potential Oscillationsстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 12 января 2022 г.
- Авторы: Smolin Alexander V., Gadzaov Aleksey F., Kustov Leonid M.
- Журнал: Journal of the Electrochemical Society
- Том: 168
- Номер: 7
- Год издания: 2021
- Издательство: Electrochemical Society, Inc.
- Местоположение издательства: United States
- Первая страница: 076505
- Номер статьи: 076505
- DOI: 10.1149/1945-7111/ac0ec0
- Аннотация: The relationship between the kinetics of the oxidation of adsorbed forms of reduced CO2 (rCO2), which is the slow subsystem, and the oscillating nature of the oxidation of rCO2, the fast subsystem, on the surface of a polycrystalline Pt electrode under quasireversible open-circuit conditions and galvanostatic experimental conditions in a saturated aqueous solution of H2CO3 was established. The reaction rate constant k of rCO2 oxidation and the transfer coefficient α were obtained. It is shown that the process proceeds in conditions close to the barrier-free regime. The possibility of participation in the oxidation reaction of OH• species generated during the catalytic decomposition of H2O2 as the main product during the conjugated oxygen reduction reaction (ORR) is confirmed. It is shown that the use of the “helium washed” water can be a convenient system for determining small concentrations of dissolved O2. It was possible to minimize the effect of the conjugative ORR on the Pt surface and to consider in detail the dynamics and kinetics of the oxidation of adsorbed rCO2. This will allow the obtained results to be used in the future for the preparation of highly sensitive oxygen sensors and for development of efficient fuel cells.
- Добавил в систему: Кустов Леонид Модестович