Trimetallic Mn-Fe-Ni Oxide Nanoparticles Supported on Multi-Walled Carbon Nanotubes as High-Performance Bifunctional ORR/OER Electrocatalyst in Alkaline Media

Trimetallic Mn-Fe-Ni Oxide Nanoparticles Supported on Multi-Walled Carbon Nanotubes as High-Performance Bifunctional ORR/OER Electrocatalyst in Alkaline Media Научная публикация

Журнал

Advanced Functional Materials
ISSN: 1616-301X , E-ISSN: 1616-3028

Вых. Данные

Год: 2020, Том: 30, Номер: 6, Номер статьи : 1905992, Страниц : 12 DOI: 10.1002/adfm.201905992

Авторы

Morales Dulce M. ¹ , Kazakova Mariya A. ^2,3 , Dieckhöfer Stefan ¹ , Selyutin Alexander G. ² , Golubtsov Georgiy V. ² , Schuhmann Wolfgang ¹ , Masa Justus ¹

Организации

1	Analytical Chemistry – Center for Electrochemical Sciences (CES), Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstr. 150, Bochum 44780, Germany
2	Boreskov Institute of Catalysis SB RAS, Lavrentieva 5, Novosibirsk 630090, Russia
3	Novosibirsk State University, Pirogova 2, Novosibirsk 630090, Russia

Discovering precious metal-free electrocatalysts exhibiting high activity and stability toward both the oxygen reduction (ORR) and the oxygen evolution (OER) reactions remains one of the main challenges for the development of reversible oxygen electrodes in rechargeable metal–air batteries and reversible electrolyzer/fuel cell systems. Herein, a highly active OER catalyst, Fe0.3Ni0.7OX supported on oxygen-functionalized multi-walled carbon nanotubes, is substantially activated into a bifunctional ORR/OER catalyst by means of additional incorporation of MnOX. The carbon nanotube-supported trimetallic (Mn-Ni-Fe) oxide catalyst achieves remarkably low ORR and OER overpotentials with a low reversible ORR/OER overvoltage of only 0.73 V, as well as selective reduction of O2 predominantly to OH−. It is shown by means of rotating disk electrode and rotating ring disk electrode voltammetry that the combination of earth-abundant transition metal oxides leads to strong synergistic interactions modulating catalytic activity. The applicability of the prepared catalyst for reversible ORR/OER electrocatalysis is evaluated by means of a four-electrode configuration cell assembly comprising an integrated two-layer bifunctional ORR/OER electrode system with the individual layers dedicated for the ORR and the OER to prevent deactivation of the ORR activity as commonly observed in single-layer bifunctional ORR/OER electrodes after OER polarization. © 2019 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Morales D.M. , Kazakova M.A. , Dieckhöfer S. , Selyutin A.G. , Golubtsov G.V. , Schuhmann W. , Masa J.
Trimetallic Mn-Fe-Ni Oxide Nanoparticles Supported on Multi-Walled Carbon Nanotubes as High-Performance Bifunctional ORR/OER Electrocatalyst in Alkaline Media

Advanced Functional Materials. 2020. V.30. N6. 1905992 :1-12. DOI: 10.1002/adfm.201905992 WOS Scopus РИНЦ РИНЦ CAPlus OpenAlex Sciact

Полный текст от издателя

Поступила в редакцию:	23 июл. 2019 г.
Принята к публикации:	17 окт. 2019 г.
Опубликована online:	14 нояб. 2019 г.
Опубликована в печати:	5 февр. 2020 г.

Web of science:	WOS:000496335700001
Scopus:	2-s2.0-85075214691
РИНЦ:	41821556 \| 43211513
Chemical Abstracts:	2019:2168207
OpenAlex:	W2988273169
Sciact:	34021

БД	Цитирований
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