摘要
A challenging but urgent task is to construct efficient and robust hydrogen evolution reaction(HER)electrocatalysts for practically feasible and sustainable hydrogen production through alkaline water electrolysis.Herein we report a simple and mild pyrolysis method to synthesize the efficient Ru nanoparticles(NPs) supported on Co-embedded N-doped carbon nanotubes(Ru/Co-NCNTs)catalyst for HER in basic media.The Ru/Co-NCNTs display remarkable performance with a low overpotential of only 35mV at 10mA/cm^2,a small Tafel slope(36mV/dec),and a high mass activity in 1mol/L KOH,which is superior to commercial 20% Pt/C catalyst.This excellent performance is benefited from the enhanced conductivity of N-doped carbon nanotubes(NCNTs)and high intrinsic activity triggered by synergistic coupling between Ru NPs and Co-embedded N-doped carbon nanotubes(Co-NCNTs).
基金
the National Natural Science Foundation of China(Nos.51972008,51925202)。