Au/Ni12P5 core/shell single-crystal nanoparticles as oxygen evolution reaction catalyst

被引：54
|
作者：
Xu, Yingying [1 ]
Duan, Sibin [1 ]
Li, Haoyi [2 ]
Yang, Ming [3 ]
Wang, Shijie [3 ]
Wang, Xun [2 ]
Wang, Rongming [1 ]
机构：
[1] Univ Sci & Technol Beijing, Sch Math & Phys, Beijing Key Lab Magnetophotoelect Composite & Int, Beijing 100083, Peoples R China
[2] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China
[3] ASTAR, Inst Mat Res & Engn, 2 Fusionopolis Way, Singapore 138634, Singapore
来源：
NANO RESEARCH | 2017年 / 10卷 / 09期
基金：
中国国家自然科学基金;
关键词：
oxygen evolution reaction; nickel phosphide; core/shell nanoparticles; interfacial coupling; TOTAL-ENERGY CALCULATIONS; HYDROGEN EVOLUTION; NICKEL PHOSPHIDE; WATER; SURFACE; OXIDE; ELECTROLYSIS; EFFICIENT; ELECTROCATALYSIS; NANOCRYSTALS;
D O I：
10.1007/s12274-017-1527-1
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：
We have demonstrated the improved performance of oxygen evolution reactions (OER) using Au/nickel phosphide (Ni12P5) core/shell nanoparticles (NPs) under basic conditions. NPs with a Ni12P5 shell and a Au core, both of which have well-defined crystal structures, have been prepared using solution-based synthetic routes. Compared with pure Ni12P5 NPs and Au-Ni12P5 oligomer-like NPs, the core/shell crystalline structure with Au shows an improved OER activity. It affords a current density of 10 mA/cm(2) at a small overpotential of 0.34 V, in 1 M KOH aqueous solution at room temperature. This enhanced OER activity may relate to the strong structural and effective electronic coupling between the single-crystal core and the shell.
引用
收藏
页码：3103 / 3112
页数：10
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