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YAMADA H, MATSUMOTO K, KURATANI K, ARIYOSHI K, MATSUI M, MIZUHATA M. Preface for the 66th Special Feature “Novel Aspects and Approaches to Experimental Methods for Electrochemistry”. ELECTROCHEMISTRY 2022. [DOI: 10.5796/electrochemistry.22-66113] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Hirohisa YAMADA
- Department of Chemical Engineering, National Institute of Technology, Nara College
| | | | - Kentaro KURATANI
- Research Institute of Electrochemical Energy, National Institute of Advanced Industrial Science and Technology (AIST)
| | - Kingo ARIYOSHI
- Graduate School of Engineering, Osaka Metropolitan University
| | | | - Minoru MIZUHATA
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University
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Liu W, Kawano K, Kamiko M, Kato Y, Okazaki Y, Yamada I, Yagi S. Effects of A-site Cations in Quadruple Perovskite Ruthenates on Oxygen Evolution Catalysis in Acidic Aqueous Solutions. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2202439. [PMID: 35802899 DOI: 10.1002/smll.202202439] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 06/09/2022] [Indexed: 06/15/2023]
Abstract
The quadruple perovskite ruthenate CaCu3 Ru4 O12 is more active and stable than the benchmark catalyst RuO2 in the oxygen evolution reaction (OER) in acidic aqueous solutions, where many oxide-based catalysts are dissolved. Studies on the crystal structures of quadruple perovskite ruthenates are rare, and the origin of OER activity or stability from a structural aspect has not been clarified in detail. This presents the need to study the effects of cations at the A site of quadruple perovskite ruthenates ACu3 Ru4 O12 (A = Ca, Sr, La, Nd, and Ce) on the OER catalytic activity and stability in acidic aqueous solutions. CaCu3 Ru4 O12 has the highest activity and stability among all quadruple perovskite samples. The type of cation at the A site changes the average Cu and Ru valence states, and the plot of OER activity versus the average Cu valence number shows a volcano-type relationship. In addition, stability increases with a decrease in Ru-O bond length. This research provides a good design principle for OER catalysts with high activity and stability in severely acidic aqueous solutions.
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Affiliation(s)
- Wei Liu
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-Ku, Tokyo, 153-8505, Japan
| | - Kodai Kawano
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-Ku, Tokyo, 153-8505, Japan
| | - Masao Kamiko
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-Ku, Tokyo, 153-8505, Japan
| | - Yuta Kato
- Department of Materials Science, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka, 599-8531, Japan
| | - Yuichi Okazaki
- Department of Materials Science, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka, 599-8531, Japan
| | - Ikuya Yamada
- Department of Materials Science, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka, 599-8531, Japan
- Department of Materials Science, Graduate School of Engineering, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka, 599-8531, Japan
| | - Shunsuke Yagi
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-Ku, Tokyo, 153-8505, Japan
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