On the catalytic and degradative role of oxygen-containing groups on carbon electrode in non-aqueous ORR
Inozemtseva AI, Kataev E, Frolov AS, Amati M, Gregoratti L, Beranová K, Dieste VP, Escudero C, Fedorov A, Tarasov AV, Usachov DY, Vyalikh DV, Shao-Horn Y, Itkis DM, Yashina LV (2021)
Publication Type: Journal article
Publication year: 2021
Journal
Book Volume: 176
Pages Range: 632-641
DOI: 10.1016/j.carbon.2020.12.008
Abstract
Oxygen reduction reaction (ORR) is a crucial process that drives the operation of several energy storage devices. ORR can proceed on the neat carbon surface in the absence of a catalyst, and its electrochemical activity is determined by its microstructure and chemical composition. Oxygen functional groups unavoidably existing on the carbon surface can serve as adsorption sites for ORR intermediates; the presence of some oxygen functionalities gives rise to an increase in the density of electronic states (DOS) at the Fermi level (FL). Both factors should have a positive impact on the electron transfer rate that was demonstrated for ORR in aqueous media. To study the O-groups effect on the aprotic ORR, which is now of interest due to the extensive development of aprotic metal-air batteries, we use model oxidized carbon electrodes (HOPG and single-layer graphene). We demonstrate that oxygen functionalities (epoxy, carbonyl, and lactone) do not affect the rate of one-electron oxygen reduction in aprotic media in the absence of metal cations since their introduction practically does not increase DOS at FL. However, in Li+-containing electrolytes, oxygen groups enhance both the rate of second electron transfer and carbon degradation due to its oxidation by LiO
Authors with CRIS profile
Involved external institutions
Lomonosov Moscow State University / Московский государственный университет имени М.В.Ломоносова
Russian Federation (RU)
Elettra Sincrotrone Trieste S.C.p.A.
Italy (IT)
CELLS ALBA Synchrotron (Consorcio para la Construcción, Equipamiento y Explotación del Laboratorio de Luz de Sincrotrón)
Spain (ES)
Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden e.V. (IFW) / Leibniz Institute for Solid State and Materials Research Dresden
Germany (DE)
Saint Petersburg State University (SPbU) / Санкт-Петербургский государственный университет (СПбГУ)
Russian Federation (RU)
Donostia International Physics Center (DIPC)
Spain (ES)
Massachusetts Institute of Technology (MIT)
United States (USA) (US)
Russian Federation (RU)
Elettra Sincrotrone Trieste S.C.p.A.
Italy (IT)
CELLS ALBA Synchrotron (Consorcio para la Construcción, Equipamiento y Explotación del Laboratorio de Luz de Sincrotrón)
Spain (ES)
Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden e.V. (IFW) / Leibniz Institute for Solid State and Materials Research Dresden
Germany (DE)
Saint Petersburg State University (SPbU) / Санкт-Петербургский государственный университет (СПбГУ)
Russian Federation (RU)
Donostia International Physics Center (DIPC)
Spain (ES)
Massachusetts Institute of Technology (MIT)
United States (USA) (US)
How to cite
APA:
Inozemtseva, A.I., Kataev, E., Frolov, A.S., Amati, M., Gregoratti, L., Beranová, K.,... Yashina, L.V. (2021). On the catalytic and degradative role of oxygen-containing groups on carbon electrode in non-aqueous ORR. Carbon, 176, 632-641. https://dx.doi.org/10.1016/j.carbon.2020.12.008
MLA:
Inozemtseva, Alina I., et al. "On the catalytic and degradative role of oxygen-containing groups on carbon electrode in non-aqueous ORR." Carbon 176 (2021): 632-641.
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