Efficient Water Splitting Catalyzed by Cobalt Phosphide-Based Nanoneedle Arrays Supported on Carbon Cloth

被引：197
作者：
Wang, Peng [1 ,2 ]
Song, Fang [1 ]
Amal, Rose [2 ]
Ng, Yun Hau [2 ]
Hu, Xile [1 ]
机构：
[1] Ecole Polytech Fed Lausanne, Inst Chem Sci & Engn, Lab Inorgan Synth & Catalysis, ISIC LSCI, BCH 3305, CH-1015 Lausanne, Switzerland
[2] Univ New S Wales, Sch Chem Engn, Particles & Catalysis Res Grp, Sydney, NSW 2052, Australia
来源：
CHEMSUSCHEM | 2016年 / 9卷 / 05期
关键词：
electrocatalysts; cobalt phosphide; hydrogen evolution; nanoarrays; oxygen evolution; HYDROGEN EVOLUTION REACTION; OXYGEN EVOLUTION; COP NANOCRYSTALS; NANOWIRE ARRAYS; PH; 0-14; ELECTROCATALYST; OXIDATION; NANOPARTICLES; FILM; ELECTRODES;
D O I：
10.1002/cssc.201501599
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Efficient and low-cost electrocatalysts for water splitting are essential for solar fuel production. Herein, we report that nanoarrays of CoP supported on carbon cloth are an efficient bifunctional catalyst for overall water splitting. The catalyst exhibits remarkable activity for both the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) in alkaline media, delivering a current density of 10mAcm(-2) at an overpotential of 281mV for OER and 95mV for HER. During electrocatalysis, the surface of the CoP catalyst was covered with a layer of CoOx, which was the active species. However, the CoP core and the nanoarray morphology contributed significantly to the activity.
引用
收藏
页码：472 / 477
页数：6
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