RT Journal Article A1 Xiang Ren,Dan Wu,Ruixiang Ge,Xu Sun,Hongmin Ma,Tao Yan,Yong Zhang,Bin Du,Qin Wei,Liang Chen; AD 界面反应与传感分析重点实验室, 中国 ; 界面反应与传感分析重点实验室, 中国 ; Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, 315201, 中国 ; 界面反应与传感分析重点实验室, 中国 ; 界面反应与传感分析重点实验室, 中国 ; 资源与环境学院, 中国 ; 界面反应与传感分析重点实验室, 中国 ; 资源与环境学院, 中国 ; 界面反应与传感分析重点实验室, 中国 ; Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, 315201, 中国 T1 Self-supported CoMoS4 nanosheet array as an efficient catalyst for hydrogen evolution reaction at neutral pH YR 2018 IS 4 vo 11 OP 2024-OP 2033 K1 density functional theory;hydrogen evolution reaction;CoMoS4 nanosheet array;anion exchange reaction;neutral pH AB Development of earth-abundant electrocatalysts, particularly for high-efficiency hydrogen evolution reaction (HER) under benign conditions, is highly desired, but still remains a serious challenge. Herein, we report a high-performance amorphous CoMoS4 nanosheet array on carbon cloth (CoMoS4 NS/CC), prepared by hydrothermal treatment of a Co(OH)F nanosheet array on a carbon cloth (Co(OH)F NS/CC) in (NH4)2MoS4 solution. As a three-dimensional HER electrode, CoMoS4 NS/CC exhibits remarkable activity in 1.0 M phosphate buffer saline (pH 7), only requiring an overpotential of 183 mV to drive a geometrical current density of 10 mA·cm–2. This overpotential is 140 mV lower than that for Co(OH)F NS/CC. Notably, this electrode also shows outstanding electrochemical durability and nearly 100% Faradaic efficiency. Density functional theory calculations suggest that CoMoS4 has a more favorable hydrogen adsorption free energy than Co(OH)F. SN 1998-0124 LA EN