中央研究院 原子與分子科學研究所

A 3D Ni foam deposited with graphene layers on surfaces was used as a conducting solid support to load MoSx catalysts for electrocatalytic hydrogen evolution. The graphene sheets grown on Ni foams provide robust protection and efficiently increase its stability in acid. The hydrogen evolution rate reaches 302 ml g-1cm-2h-1 (13.47 mmol g-1cm-2h-1) at overpotential V=0.2V and the catalytic species were likely related to the S22-. The developments in graphene based 3D electrodes may further advance the efficiency of various electrocatalytic reactions, which warrants more investigations.