过电位
纳米孔
塔菲尔方程
纳米线
化学
钴
阴极
材料科学
氢
电极
化学工程
纳米技术
无机化学
催化作用
磷化物
电化学
物理化学
有机化学
工程类
作者
Jingqi Tian,Qian Liu,Abdullah M. Asiri,Xuping Sun
摘要
In this Communication, we report the topotactic fabrication of self-supported nanoporous cobalt phosphide nanowire arrays on carbon cloth (CoP/CC) via low-temperature phosphidation of the corresponding Co(OH)F/CC precursor. The CoP/CC, as a robust integrated 3D hydrogen-evolving cathode, shows a low onset overpotential of 38 mV and a small Tafel slope of 51 mV dec(-1), and it maintains its catalytic activity for at least 80,00 s in acidic media. It needs overpotentials (η) of 67, 100, and 204 mV to attain current densities of 10, 20, and 100 mA cm(-2), respectively. Additionally, this electrode offers excellent catalytic performance and durability under neutral and basic conditions.
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