Brownmillerite-type Ca2 FeCoO5 as a Practicable Oxygen Evolution Reaction Catalyst

Etsushi Tsuji; Teruki Motohashi; Hiroyuki Noda; Damian Kowalski; Yoshitaka Aoki; Hajime Tanida; Junji Niikura; Yukinori Koyama; Masahiro Mori; Hajime Arai; Tsutomu Ioroi; Naoko Fujiwara; Yoshiharu Uchimoto; Zempachi Ogumi; Hiroki Habazaki

doi:10.1002/cssc.201700499

Brownmillerite-type Ca₂ FeCoO₅ as a Practicable Oxygen Evolution Reaction Catalyst

ChemSusChem. 2017 Jul 21;10(14):2864-2868. doi: 10.1002/cssc.201700499. Epub 2017 Jun 19.

Authors

Etsushi Tsuji^{1

2}, Teruki Motohashi^{1

3}, Hiroyuki Noda⁴, Damian Kowalski¹, Yoshitaka Aoki^{1

4}, Hajime Tanida^{5

6}, Junji Niikura⁵, Yukinori Koyama^{5

7}, Masahiro Mori^{5

8}, Hajime Arai^{5

9}, Tsutomu Ioroi¹⁰, Naoko Fujiwara¹⁰, Yoshiharu Uchimoto¹¹, Zempachi Ogumi⁵, Hiroki Habazaki^{1

4}

Affiliations

¹ Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Sapporo, 060-8628, Japan.
² Department of Chemistry and Biotechnology, Tottori University, Tottori, 680-8550, Japan.
³ Department of Materials and Life Chemistry, Kanagawa University, Yokohama, 221-8686, Japan.
⁴ Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, 060-8628, Japan.
⁵ Office of Society-Academia Collaboration for Innovation, Kyoto University, Kyoto, 611-0011, Japan.
⁶ Present address: Battery Analysis Laboratory, Device Analysis Department, NISSAN ARC, LTD., Kanagawa, 237-0061, Japan.
⁷ Present address: Research and Services Division of Materials Data and Integrated System (MaDIS), Center for Materials Research by Information Integration (CMI2), National Institute for Materials Science (NIMS), Ibaraki, 305-0047, Japan.
⁸ Present address: Materials Science Research Group, Research Institute of Electrochemical Energy, Department of Energy and Environment, National Institute of Advanced Industrial Science and Technology (AIST), Osaka, 563-8577, Japan.
⁹ Present address: School of Materials and Chemical Technology, Tokyo Institute of Technology, Yokohama, 226-8502, Japan.
¹⁰ National Institute of Advanced Industrial Science and Technology, Osaka, 563-8577, Japan.
¹¹ Graduate School of Human and Environmental Studies, Kyoto University, Kyoto, 606-8501, Japan.

PMID: 28544652
DOI: 10.1002/cssc.201700499

Abstract

Here, we report remarkable oxygen evolution reaction (OER) catalytic activity of brownmillerite (BM)-type Ca₂ FeCoO₅ . The OER activity of this oxide is comparable to or beyond those of the state-of-the-art perovskite (PV)-catalyst Ba_0.5 Sr_0.5 Co_0.8 Fe_0.2 O_3-δ (BSCF) and a precious-metal catalyst RuO₂ , emphasizing the importance of the characteristic BM structure with multiple coordination environments of transition metal (TM) species. Also, Ca₂ FeCoO₅ is clearly advantageous in terms of expense/laboriousness of the material synthesis. These facts make this oxide a promising OER catalyst used in many energy conversion technologies such as metal-air secondary batteries and hydrogen production from electrochemical/photocatalytic water splitting.

Keywords: brownmillerite; electrocatalysts; oxygen evolution reaction; perovskites; transition metals.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Catalysis
Cobalt / chemistry*
Iron Compounds / chemistry*
Models, Molecular
Molecular Conformation
Oxides / chemistry*
Oxygen / chemistry*

Substances

Iron Compounds
Oxides
Cobalt
Oxygen