Chung, Young-Hoon Gupta, Kapil Jang, Jue-Hyuk Park, Hyun S. Jang, Injoon Jang, Jong Hyun Lee, Yong-Kul Lee, Seung-Cheol Yoo, Sung Jong 2024-01-20T03:34:02Z 2024-01-20T03:34:02Z 2021-09-05 2016-08 2211-2855 https://pubs.kist.re.kr/handle/201004/123816 Although the electrochemical hydrogen evolution reaction (HER) has been intensively investigated for decades as a promising hydrogen production source, its economic feasibility is still questionable because of the high cost of Pt-based electrocatalysts. Transition metal phosphides are potential replacements for Pt; however, a fundamental understanding of the active catalyst site chemistry is still lacking. Such an understanding is crucial to design robust catalytic materials. The aim of this study is to rationalize the HER on the active sites of nickel phosphide (Ni2P) nanowires. Using experimental and theoretical analyses, it can be concluded that the active site of Ni2P nanowires is an exposed Ni3P2 surface generated by the oxygenated Ni3P_P surface created during the HER. This work is a breakthrough in the efficient design of phosphide-based non-Pt catalysts for electrochemical hydrogen production. (C) 2016 Elsevier Ltd. All rights reserved. English ELSEVIER ACTIVE EDGE SITES ELECTROLYTIC HYDROGEN EVOLUTION REACTION NANOPARTICLES CATALYSTS GRAPHENE NANOSHEETS ADSORPTION NI2P(001) SURFACE Rationalization of electrocatalysis of nickel phosphide nanowires for efficient hydrogen production Article 10.1016/j.nanoen.2016.06.002 1 NANO ENERGY, v.26, pp.496 - 503 NANO ENERGY 26 496 503 scie scopus 000384908700058 2-s2.0-84974660031 Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Chemistry Science & Technology - Other Topics Materials Science Physics Article ACTIVE EDGE SITES ELECTROLYTIC HYDROGEN EVOLUTION REACTION NANOPARTICLES CATALYSTS GRAPHENE NANOSHEETS ADSORPTION NI2P(001) SURFACE Hydrogen evolution reaction Nickel phosphides Nanowires Density functional theory Water electrolysis