文摘
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鈥?, and it maintains its catalytic activity for at least 80鈥?00 s in acidic media. It needs overpotentials (畏) of 67, 100, and 204 mV to attain current densities of 10, 20, and 100 mA cm鈥?, respectively. Additionally, this electrode offers excellent catalytic performance and durability under neutral and basic conditions.