Electrochimica Acta, volume 367, pages 137378

Mn2O3 oxide with bixbyite structure for the electrochemical oxygen reduction reaction in alkaline media: Highly active if properly manipulated

Ryabova Anna S. 1, 2
Saveleva Viktoriia A
Tsirlina Galina A.
Arkharova Natalya A 5
Dosaev Kirill A 1, 2
Sena Robert Paria 3
Kéranguéven Gwénaëlle 2
Orekhov Anton 5
Saveleva Viktoriia 2
Publication typeJournal Article
Publication date2021-01-01
Quartile SCImago
Q1
Quartile WOS
Q2
Impact factor6.6
ISSN00134686
General Chemical Engineering
Electrochemistry
Abstract
Abstract We consider compositional and structural factors which can affect the activity of bixbyite α-Mn2O3 towards the oxygen reduction reaction (ORR) and the stability of this oxide in alkaline solution. We compare electrochemistry of undoped, Fe and Al-doped α-Mn2O3 with bixbyite structure and braunite Mn7SiO12 having bixbyite-related crystal structure, using the rotating disk electrode (RDE), the rotating ring-disk electrode (RRDE), and cyclic voltammetry (CV) techniques. All manganese oxides under study are stable in the potential range between the ORR onset and ca. 0.7 V vs. Reversible Hydrogen Electrode (RHE). It is found that any changes introduced in the bixbyite structure and/or composition of α-Mn2O3 lead to an activity drop in both the oxygen reduction and hydrogen peroxide reactions in this potential interval. For the hydrogen peroxide reduction reaction these modifications also result in a change in the nature of the rate-determining step. The obtained results confirm that due to its unique crystalline structure undoped α-Mn2O3 is the most ORR active (among currently available) Mn oxide catalyst and favor the assumption of the key role of the (111) surface of α-Mn2O3 in the very high activity of this material towards the ORR.

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Ryabova A. S. et al. Mn2O3 oxide with bixbyite structure for the electrochemical oxygen reduction reaction in alkaline media: Highly active if properly manipulated // Electrochimica Acta. 2021. Vol. 367. p. 137378.
GOST all authors (up to 50) Copy
Ryabova A. S., Istomin S. Y., Dosaev K. A., Bonnefont A., Hadermann J., Arkharova N. A., Orekhov P., Sena R. P., Saveleva V. A., Kéranguéven G., Antipov E. V., Savinova E. R., Tsirlina G. A., Orekhov A., Saveleva V., Tsirlina G. A. Mn2O3 oxide with bixbyite structure for the electrochemical oxygen reduction reaction in alkaline media: Highly active if properly manipulated // Electrochimica Acta. 2021. Vol. 367. p. 137378.
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RIS Copy
TY - JOUR
DO - 10.1016/j.electacta.2020.137378
UR - https://doi.org/10.1016%2Fj.electacta.2020.137378
TI - Mn2O3 oxide with bixbyite structure for the electrochemical oxygen reduction reaction in alkaline media: Highly active if properly manipulated
T2 - Electrochimica Acta
AU - Ryabova, Anna S.
AU - Istomin, Sergey Ya.
AU - Dosaev, Kirill A
AU - Bonnefont, Antoine
AU - Hadermann, Joke
AU - Arkharova, Natalya A
AU - Orekhov, Philipp
AU - Sena, Robert Paria
AU - Saveleva, Viktoriia A
AU - Kéranguéven, Gwénaëlle
AU - Antipov, Evgeny V.
AU - Savinova, Elena R.
AU - Tsirlina, Galina A.
AU - Orekhov, Anton
AU - Saveleva, Viktoriia
AU - Tsirlina, Galina A
PY - 2021
DA - 2021/01/01 00:00:00
PB - Elsevier
SP - 137378
VL - 367
SN - 0013-4686
ER -
BibTex
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BibTex Copy
@article{2021_Ryabova
author = {Anna S. Ryabova and Sergey Ya. Istomin and Kirill A Dosaev and Antoine Bonnefont and Joke Hadermann and Natalya A Arkharova and Philipp Orekhov and Robert Paria Sena and Viktoriia A Saveleva and Gwénaëlle Kéranguéven and Evgeny V. Antipov and Elena R. Savinova and Galina A. Tsirlina and Anton Orekhov and Viktoriia Saveleva and Galina A Tsirlina},
title = {Mn2O3 oxide with bixbyite structure for the electrochemical oxygen reduction reaction in alkaline media: Highly active if properly manipulated},
journal = {Electrochimica Acta},
year = {2021},
volume = {367},
publisher = {Elsevier},
month = {jan},
url = {https://doi.org/10.1016%2Fj.electacta.2020.137378},
pages = {137378},
doi = {10.1016/j.electacta.2020.137378}
}
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