ID | 61068 |
FullText URL | |
Author |
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
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Abstract | 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.
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Keywords | Water electrolysis
Oxygen evolution reaction
NiFe layered double hydroxide
Room temperature synthesis
Electrocatalyst
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Published Date | 2020-12-04
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Publication Title |
Energy Reports
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Volume | volume6
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Issue | issueSuppl. 7
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Publisher | Elsevier
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Start Page | 248
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End Page | 254
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ISSN | 2352-4847
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Content Type |
Journal Article
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language |
English
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OAI-PMH Set |
岡山大学
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Copyright Holders | © 2020 The Authors.
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File Version | publisher
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DOI | |
Web of Science KeyUT | |
Related Url | isVersionOf https://doi.org/10.1016/j.egyr.2020.10.007
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License | http://creativecommons.org/licenses/by/4.0/
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