电催化剂
磷化物
镍
材料科学
过电位
催化作用
化学工程
钴
无机化学
析氧
电解质
碱性水电解
电化学
化学
纳米结构
电解水
纳米技术
电极
冶金
物理化学
工程类
作者
Bo Ma,Zhengchun Yang,Yantao Chen,Zhihao Yuan
出处
期刊:Nano Research
[Springer Nature]
日期:2018-11-08
卷期号:12 (2): 375-380
被引量:171
标识
DOI:10.1007/s12274-018-2226-2
摘要
Transition metal phosphides (TMPs) are promising candidates for noble metal free electrocatalysts in water splitting applications. In this work, we present the facile synthesis of nickel cobalt phosphide electrocatalyst with three-dimensional nanostructure (3D-NiCoP) on the nickel foam, via hydrothermal reaction and phosphorization. The as-prepared electrocatalyst exhibits an excellent activity for hydrogen evolution reaction (HER) in both acidic and alkaline electrolytes, with small overpotentials to drive 10 mA/cm2 (80 mV for 0.5 M H2SO4, 105 mV for 1 M KOH), small Tafel slopes (37 mV/dec for 0.5 M H2SO4, 79 mV/dec for 1 M KOH), and satisfying durability in long-term electrolysis. 3D-NiCoP also shows a superior HER activity compared to single metal phosphide, such as cobalt phosphide and nickel phosphide. The outstanding performance for HER suggests the great potential of 3D-NiCoP as a highly efficient electrocatalyst for water splitting technology.
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