Defect‐Rich MoS2 Ultrathin Nanosheets with Additional Active Edge Sites for Enhanced Electrocatalytic Hydrogen Evolution

Abstract

Defect‐rich MoS₂ ultrathin nanosheets are synthesized on a gram scale for electrocatalytic hydrogen evolution. The novel defect‐rich structure introduces additional active edge sites into the MoS₂ ultrathin nanosheets, which significantly improves their electrocatalytic performance. Low onset overpotential and small Tafel slope, along with large cathodic current density and excellent durability, are all achieved for the novel hydrogen‐evolution‐reaction electrocatalyst.