Rationalization of electrocatalysis of nickel phosphide nanowires for efficient hydrogen production

被引：58

作者：

Chung, Young-Hoon ^{[1
]}

Gupta, Kapil ^{[2
]}

Jang, Jue-Hyuk ^{[1
,3
]}

Park, Hyun S. ^{[1
]}

Jang, Injoon ^{[1
]}

Jang, Jong Hyun ^{[1
,4
]}

Lee, Yong-Kul ^{[3
]}

Lee, Seung-Cheol ^{[2
,5
]}

Yoo, Sung Jong ^{[1
,6
]}

机构：

[1] Korea Inst Sci & Technol KIST, Fuel Cell Res Ctr, Seoul 02792, South Korea

[2] Korea Inst Sci & Technol KIST, Indo Korea Sci & Technol Ctr, Bangalore 560064, Karnataka, India

[3] Dankook Univ, Dept Chem Engn, Yongin 16890, South Korea

[4] Korea Univ, Green Sch, Seoul 02841, South Korea

[5] Korea Inst Sci & Technol KIST, Elect Mat Res Ctr, Seoul 02792, South Korea

[6] Korea Univ Sci & Technol, Clean Energy & Chem Engn, Daejeon 34113, South Korea

来源：

NANO ENERGY | 2016年 / 26卷

关键词：

Hydrogen evolution reaction; Nickel phosphides; Nanowires; Density functional theory; Water electrolysis; ACTIVE EDGE SITES; ELECTROLYTIC HYDROGEN; EVOLUTION REACTION; NANOPARTICLES; CATALYSTS; GRAPHENE; NANOSHEETS; ADSORPTION; NI2P(001); SURFACE;

D O I：

10.1016/j.nanoen.2016.06.002

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：496 / 503

页数：8

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