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ID 61068
フルテキストURL
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著者
Kim, Seong Hyun Department of Materials Science and Engineering, Pusan National University
Park, Yoo Sei Department of Materials Science and Engineering, Pusan National University
Kim, Chiho Department of Materials Science and Engineering, Pusan National University
Kwon, Il Yeong Department of Materials Science and Engineering, Pusan National University
Lee, Jooyoung Materials Center for Energy Department, Surface Technology Division, Korea Institute of Materials Science,
Jin, Hyunsoo Department of Mechanical Engineering, Worcester Polytechnic Institute
Lee, Yoon-Seok Graduate School of Natural Science and Technology, Okayama University
Choi, Sung Mook Materials Center for Energy Department, Surface Technology Division, Korea Institute of Materials Science
Kim, Yangdo Department of Materials Science and Engineering, Pusan National University
抄録
Active and stable electrocatalysts are the key to water electrolysis for hydrogen production. This paper reports a facile direct growth method to synthesize NiFe-layered double hydroxides (LDHs) on nickel foil as an electrocatalyst for the oxygen evolution reaction. The NiFe-LDH is synthesized by a galvanic process at room temperature without any additional energy for synthesis. The synthesized NiFe-LDH is a karst landform with abundant active sites and efficient mass diffusion. The NiFe-LDH with an oxygen defect show excellent electrocatalytic performance for the OER, with a low overpotential (272 mV at 10 mA/cm2), a small Tafel slope (43 mV/dec), and superior durability. Direct growth synthesis provide excellent electrical conductivity as well as strong bonding between the catalyst layer and the substrate. In addition, this synthesis process is simple to apply in the fabrication of a large size electrode and is believed to be applicable to commercialized alkaline water electrolysis.
キーワード
Water electrolysis
Oxygen evolution reaction
NiFe layered double hydroxide
Room temperature synthesis
Electrocatalyst
発行日
2020-12-04
出版物タイトル
Energy Reports
6巻
Suppl. 7号
出版者
Elsevier
開始ページ
248
終了ページ
254
ISSN
2352-4847
資料タイプ
学術雑誌論文
言語
English
OAI-PMH Set
岡山大学
著作権者
© 2020 The Authors.
論文のバージョン
publisher
DOI
Web of Science KeyUT
関連URL
isVersionOf https://doi.org/10.1016/j.egyr.2020.10.007
ライセンス
http://creativecommons.org/licenses/by/4.0/