Three-Dimensional Structures of MoS2@Ni Core/Shell Nanosheets Array toward Synergetic Electrocatalytic Water Splitting

Hydrogen evolution reaction (HER) in alkaline media using non-noble Metal catalysts with great efficiency represents a critical challenge in current water-alkaline and Chlor-alkali electrolyzers. Herein; we demonstrate that the MoS2@Ni core/shell nanosheets array vertically aligned on carbon. cloth (MoS2@Ni/CC) is a highly active electrocatalyst for HER. In alkaline solutions, MoS2@Ni/CC needs over potentials of 91, 118, and 196 mV to approach current densities of 10, 20, and 100 mA cm(-2), respectively, exceeding behavior of commercial Pt/C catalyst at high current densities. Additionally:, this catalyst also exhibits excellent electrocatalytic activity toward HER in neutral electrolytes. Such high hydrogen evolution activities are due to synergistic electrocatalytic,effects between MoS2 core and Ni shell.