Cyclic voltammetry electrodynamic deposition of Co9−xMnxS8 nanosheet arrays for electrocatalytic hydrogen evolution

Abstract

Room-temperature cyclic voltammetry (CV) electrodynamic deposition is proposed herein for the first time to deposit Co_9−xMn_xS₈ nanosheet arrays. The incorporation of Mn spin states induces atomic distortion, which contributes to more active edge sites and the fine-tuning of the electronic structure. The Co_9−xMn_xS₈ (x = 4.5) catalyst exhibits enhanced catalytic activity toward the hydrogen evolution reaction (HER) when compared with pristine Co₉S₈. This work offers a promising strategy for the design of highly efficient HER electrocatalysts.