DataVXAdvanced MaterialsPaper
journal article·2023-01

Corrosion‐Resistant and High‐Entropic Non‐Noble‐Metal Electrodes for Oxygen Evolution in Acidic Media

Aimi A. H. Tajuddin, Mitsuru Wakisaka, Tatsuhiko Ohto, Yue Yu, Haruki Fukushima, Hisanori Tanimoto, Xiaoguang Li, Yoshitatsu Misu, Samuel Jeong, Jun‐ichi Fujita, Hirokazu Tada, Takeshi Fujita, Masaki Takeguchi, Kaori Takano, Koji Matsuoka, Yasushi Sato, Yoshikazu Ito

Advanced Materials· Volume 35· Issue 3
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Source abstract

Abstract

Abstract To realize a sustainable hydrogen economy, corrosion‐resistant non‐noble‐metal catalysts are needed to replace noble‐metal‐based catalysts. The combination of passivation elements and catalytically active elements is crucial for simultaneously achieving high corrosion resistance and high catalytic activity. Herein, the self‐selection/reconstruction characteristics of multi‐element (nonary) alloys that can automatically redistribute suitable elements and rearrange surface structures under the target reaction conditions during the oxygen evolution reaction are investigated. The following synergetic effect (i.e., cocktail effect), among the elements Ti, Zr, Nb, and Mo, significantly contributes to passivation, whereas Cr, Co, Ni, Mn, and Fe enhance the catalytic activity. According to the practical water electrolysis experiments, the self‐selected/reconstructed multi‐element alloy demonstrates high performance under a similar condition with proton exchange membrane (PEM)‐type water electrolysis without obvious degradation during stability tests. This verifies the resistance of the alloy to corrosion when used as an electrode under a practical PEM electrolysis condition.
Source: crossref · Quality: baseline

Research context

Metals & alloysCatalysis & surfaces

OpenAlex topics: Electrocatalysts for Energy Conversion · Fuel Cells and Related Materials · Advanced battery technologies research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Institute of Applied Physics Graduate School of Pure and Applied Sciences University of Tsukuba Tsukuba Ibaraki 305‐8573 Japan

Graduate School of Engineering Toyama Prefectural University 5180 Kurokawa Imizu Toyama 939‐0398 Japan

Graduate School of Engineering Science Osaka University 1–3 Machikaneyama Toyonaka 560‐8531 Japan

Electron Microscopy Analysis Station National Institute for Materials Science (NIMS) Tsukuba 305‐0047 Japan

Central Technical Research Laboratory ENEOS Corporation 8 Chidori‐cho Naka‐Ku Yokohama 231‐0815 Japan

School of Environmental Science and Engineering Kochi University of Technology 185 Miyanokuchi, Tosayamada Kami City Kochi 782‐8502 Japan

Funding

TEPCO Memorial Foundation · Japan Science and Technology Agency · ENEOS Hydrogen Trust Fund · Japan Society for the Promotion of Science · Ministry of Education, Culture, Sports, Science and Technology · Research Foundation for the Electrotechnology of Chubu · Kanamori Foundation

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