One-dimensional(1D)transition metal phosphides(TMPs)with large specific surface areas,high charge transfer efficiency and excellent electrical conductivity have attracted significant attention in hydrogen evolution re...One-dimensional(1D)transition metal phosphides(TMPs)with large specific surface areas,high charge transfer efficiency and excellent electrical conductivity have attracted significant attention in hydrogen evolution reaction(HER)as versatile and active catalysts.Herein,the sub-4 nm Mo-Co2 P ultrafine nanorods(NRs)anchored on reduced graphene oxide(rGO)were successfully synthesized by a colloidal mesostructured strategy.Electrochemical test results reveal that the Mo-Co2 P@rGO electrode exhibits superior activity with overpotentials of204 mV and Tafel slope of 88 mV/dec for HER at 10 mA/cm^2,relative to the Co2 P@rGO electrode in 0.5 M H2SO4 solution.This improvement could be ascribed to the Mo doping,which results in more active sites,higher electrical conductivity and faster electron-transfer rates.This versatile strategy will provide a promising pathway for transition metal-doped compounds as an efficient catalyst.展开更多
基金National Natural Science Foundation of China(Grant Nos.11874027,11774124,and 11504126)China Postdoctoral Science Foundation(Grant Nos.2019T120233 and 2017M621198)。
文摘One-dimensional(1D)transition metal phosphides(TMPs)with large specific surface areas,high charge transfer efficiency and excellent electrical conductivity have attracted significant attention in hydrogen evolution reaction(HER)as versatile and active catalysts.Herein,the sub-4 nm Mo-Co2 P ultrafine nanorods(NRs)anchored on reduced graphene oxide(rGO)were successfully synthesized by a colloidal mesostructured strategy.Electrochemical test results reveal that the Mo-Co2 P@rGO electrode exhibits superior activity with overpotentials of204 mV and Tafel slope of 88 mV/dec for HER at 10 mA/cm^2,relative to the Co2 P@rGO electrode in 0.5 M H2SO4 solution.This improvement could be ascribed to the Mo doping,which results in more active sites,higher electrical conductivity and faster electron-transfer rates.This versatile strategy will provide a promising pathway for transition metal-doped compounds as an efficient catalyst.
