Nickel cobalt phosphide with three-dimensional nanostructure as al highly efficient electrocatalyst for hydrogen evolution reaction in both I acidic and alkaline electrolytes

作     者：Bo Ma Zhengchun Yang Yantao Chen Zhihao Yuan 

作者机构：Tianjin Key Laboratory for Photoelectric Materials and Devices School of Materials Science and Engineering Tianjin University of Technology Tianjin 300384 China School of Electrical and Electronic Engineering Tianjin Key Laboratory of Film Electronic & Communication Devices Tianjin University of Technology Tianjin 300384 China 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2019年第12卷第2期

页      面：375-380页

核心收录：

学科分类：07[理学] 0702[理学-物理学] 

基　　金：the National Natural Science Foundation of China (No. 51702234) 

主　　题：nickel cobalt phosphide water splitting hydrogen evolution reaction electrocatalyst 

摘      要：Transition metal phosphides (TMPs) are promising candidates for noble metal free electrocatalysts in water splitting applicati ons. In this work, we prese nt the facile syn thesis of nickel cobalt phosphide electrocatalyst with three-dime nsional nano structure (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/cm^2 (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 performa nee for HER suggests the great pote ntial of 3D-NiCoP as a highly efficient electrocatalyst for water splitting technology.