Unravelling critical role of metal cation engineering in boosting hydrogen evolution reaction activity of molybdenum diselenide

作     者：Saman Sajjad Chao Wang Cheng-Wei Deng Feng Ji Tariq Ali Babar Shezad Hao-Qing Ji Cheng-Lin Yan Saman Sajjad;Chao Wang;Cheng-Wei Deng;Feng Ji;Tariq Ali;Babar Shezad;Hao-Qing Ji;Cheng-Lin Yan

作者机构：College of EnergyKey Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu ProvinceSoochow UniversitySuzhou 215006China Space Power Technology State Key LaboratoryShanghai Institute of Space Power-SourcesShanghai 200245China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2022年第41卷第6期

页      面：1851-1858页

核心收录：

学科分类：081702[工学-化学工艺] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：financially supported by the National Natural Science Foundation of China (Nos.52071226, 51872193 and 5192500409) the Natural Science Foundation of Jiangsu Province (Nos.BK20190827 and BK20181168) 

主　　题：molybdenum critical spacing 

摘      要：Two-dimensional(2D)transition-metal selenides,espe-cially MoSe_(2),is considered to be an excellent alternative electrocatalyst for the hydrogen evolution reaction(HER).However,it still features high overpotential in HER due to the low density of active sites,which limits its practical ***,the hydrogen evolution reaction activity of MoSe_(2)is enhanced by the incorporation of metal-cation,tungsten,which succeeds in taking the place of Mo in the lattice of MoSe_(2),inducing the spacing expansion and bringing new flexural edges to serve as active *** addition,the incorporated metal also facil-itates electron transport from Mo active center toward W and Se atoms with auspicious hydrogen adsorption prop-erties.