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Highly Active and Durable FeNiCo Oxyhydroxide Oxygen Evolution Reaction Electrocatalysts Derived from Fluoride Precursors
| Title: | Highly Active and Durable FeNiCo Oxyhydroxide Oxygen Evolution Reaction Electrocatalysts Derived from Fluoride Precursors |
| Authors: | Nishimoto, Masahiro Browse this author | | Kitano, Sho Browse this author →KAKEN DB | | Kowalski, Damian Browse this author | | Aoki, Yoshitaka Browse this author →KAKEN DB | | Habazaki, Hiroki Browse this author →KAKEN DB |
| Keywords: | electrocatalyst | | oxygen evolution reaction | | FeNiCo alloy | | anodizing | | fluoride |
| Issue Date: | 19-Jul-2021 |
| Publisher: | American Chemical Society |
| Journal Title: | sustainable chemistry & engineering |
| Volume: | 9 |
| Issue: | 28 |
| Start Page: | 9465 |
| End Page: | 9473 |
| Publisher DOI: | 10.1021/acssuschemeng.1c03116 |
| Abstract: | Developing highly active and durable electro-catalysts, consisting of earth-abundant elements, for oxygen evolution reaction (OER) is pivotal for large-scale water splitting for hydrogen production. Herein, we report that the commercially available FeNiCo alloy can be converted to a highly active electrocatalyst for OER by galvanostatic anodizing in a fluoride-containing ethylene glycol electrolyte. Anodizing of the alloy develops a porous film consisting of the (FeNiCo)F-2 phase, which is readily converted to a highly active porous oxyhydroxide during anodic polarization in a KOH electrolyte. The anodized alloy exhibits high activity and high durability for OER with an overpotential as low as 0.26 V at a current density of 10 mA cm(-2). The present study demonstrates that a simple and cost-effective anodizing process can be used to form a highly active OER electrode from a low-cost, practical, iron-based alloy. In addition, we found that fluorides containing Fe, Ni, and Co are excellent precursors for the formation of oxyhydroxides exhibiting high OER activity and durability. |
| Rights: | This document is the Accepted Manuscript version of a Published Work that
appeared in final form in ACS Sustainable Chemistry & Engineering,
copyright c American Chemical Society after peer review and technical editing by
the publisher.
To access the final edited and published work see
https://pubs.acs.org/articlesonrequest/AOR-HQRYAWVH8WCHRQEEGPFR. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/86224 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 幅崎 浩樹
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