Bifunctional Oxygen Reduction/Oxygen Evolution Activity of Mixed Fe-Сo Oxide Nanoparticles with Variable Fe:Co Ratios Supported on Multi-Walled Carbon Nanotubes | Sciact - CRIS-system of Boreskov Institute of Catalysis

Bifunctional Oxygen Reduction/Oxygen Evolution Activity of Mixed Fe-Сo Oxide Nanoparticles with Variable Fe:Co Ratios Supported on Multi-Walled Carbon Nanotubes Full article

Journal

ChemSusChem
ISSN: 1864-5631 , E-ISSN: 1864-564X

Output data

Year: 2018, Volume: 11, Number: 7, Pages: 1204-1214 Pages count : 11 DOI: 10.1002/cssc.201702381

Tags

Bifunctional catalysts, Fe/Co oxide nanoparticles, Multiwalled carbon nanotubes, Oxygen evolution, Oxygen reduction

Authors

Elumeeva Karina ¹ , Kazakova Mariya ^2,3 , Morales Dulce Maria ¹ , Medina Danea ¹ , Selyutin Alexander ³ , Golubtsov Georgiy ^2,3 , Ivanov Yurii ^4,5 , Kuznetzov Vladimir ^2,3 , Chuvilin Andrey ^6,7 , Antoni Hendrik ⁸ , Muhler Martin ⁸ , Schuhmann Wolfgang ¹ , Masa Justus ¹

Affiliations

1	Analytical Chemistry - Center for Electrochemical Sciences (CES), Ruhr-Universität Bochum, Universitätsstr. 150, D-44780 Bochum, Germany
2	Novosibirsk State University, Pirogova 2, Novosibirsk, 630090, Russia
3	Boreskov Institute of Catalysis, SB RAS, Lavrentieva 5, Novosibirsk 630090, Russia
4	Erich Schmid Institute of Materials Science, Austrian Academy of Sciences, A-8700 Leoben, Jahnstraße 12, Austria
5	School of Natural Sciences, Far Eastern Federal University, 690950, Vladivostok, Russia
6	CIC nanoGUNE, Tolosa Hiribidea, 76, E-20018 Donostia – San Sebastian, Spain
7	IKERBASQUE, Basque Foundation for Science, E-48013 Bilbao, Spain, Basque Foundation for Science, E-48013 Bilbao, Spain
8	Laboratory of Industrial Chemistry, Ruhr-University Bochum, Universitätsstr. 150, D-44780 Bochum, Germany

Funding (4)

1	Russian Foundation for Basic Research	16-32-60046
2	National Council of Science and Technology	стипендия
3	German Academic Exchange Service
4	Max Planck Institute for Iron Research

We present here a facile strategy for synthesis of Fe-Co mixed metal oxide nanoparticles supported on, and embedded inside high purity oxidized multi-walled carbon nanotubes (MWCNTs) of narrow diameter distribution as effective bifunctional catalysts able to reversibly drive the oxygen evolution reaction (OER) and the oxygen reduction reaction (ORR) in alkaline solutions. Variation of the Fe:Co ratio resulted in a pronounced trend in the bifunctional ORR/OER activity. Controlled synthesis and in-depth characterization enabled the identification of an optimal Fe:Co composition, which afforded a low OER/OER reversible overvoltage of only 0.831 V, taking the OER at 10 mA cm-2 and the ORR at -1 mA cm-2. Importantly, the optimal catalyst with a Fe:Co ratio of 2:3 exhibited very promising long-term stability with no evident change in the potential for both the ORR and the OER after 400 charge/discharge (OER/ORR) cycles at 15 mA cm-2 in 6 M KOH. Moreover, detailed investigation of the structure, size and phase composition of the mixed Fe-Co oxide nanoparticles, as well as their localization (inside of or on the surface of the MWCNTs) revealed insight of the possible contribution of the individual catalyst components and their synergistic interaction on the catalysis.

Elumeeva K. , Kazakova M. , Morales D.M. , Medina D. , Selyutin A. , Golubtsov G. , Ivanov Y. , Kuznetzov V. , Chuvilin A. , Antoni H. , Muhler M. , Schuhmann W. , Masa J.
Bifunctional Oxygen Reduction/Oxygen Evolution Activity of Mixed Fe-Сo Oxide Nanoparticles with Variable Fe:Co Ratios Supported on Multi-Walled Carbon Nanotubes
ChemSusChem. 2018. V.11. N7. P.1204-1214. DOI: 10.1002/cssc.201702381 WOS Scopus РИНЦ AN PMID OpenAlex

Submitted:	Dec 15, 2017
Accepted:	Jan 22, 2018
Published online:	Mar 5, 2018
Published print:	Apr 9, 2018

Web of science:	WOS:000430082200009
Scopus:	2-s2.0-85043258207
Elibrary:	35507617
Chemical Abstracts:	2018:387679
PMID:	29359864
OpenAlex:	W2793824135

DB	Citing
Web of science	51
Scopus	52
Elibrary	54
OpenAlex	54