One-step synthesis of nanowoven ball-like NiS-WS_(2) for high-efficiency hydrogen evolution  

作　　者：Lanfang Wang Jiangnan Lv Yujia Li Yanqing Hao Wenjiao Liu Hui Zhang Xiaohong Xu 

机构地区：[1]Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education,School of Chemical and Material Science,Shanxi Normal University,Taiyuan 030032,China

出　　处：《Chinese Chemical Letters》2025年第1期627-631,共5页中国化学快报(英文版)

基　　金：financially supported by the National Natural Science Foundation of China(No.52202340);the Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi(No.2021L266);the Applied Basic Research Project of Shanxi Province(No.20210302124425);the Graduate Science and Technology Innovation Project Foundation of Shanxi Normal University(No.2023XSY065)。

摘　　要：Exploring transition metal sulfide electrocatalysts with high-efficiency for hydrogen evolution reaction(HER)is essential to produce H_(2) fuel through water splitting.Herein,novel nickel tungsten sulfide heterojunction(NiS-WS_(2))with a nanowoven ball-like structure were directed synthetized by a facile hydrothermal method.The hierarchical Ni S-WS_(2) exhibited excellent HER activity with a relatively small overpotential of 142 and 137 m V at 10 m A/cm^(2) in 0.5 mol/L H_(2)SO_(4) and 1 mol/L KOH,which is much better than that of single NiS and WS_(2).The impressive performance of NiS-WS_(2) heterojunction is owed to the collective synergy of special morphological and more exposed active sites between the crystal interfacial of NiS and WS_(2).In addition,the hierarchical NiS-WS_(2) can facilitate the transport of charge/mass by optimized electronic structure,which further improves the HER activity of electrocatalysts.These outcomes provide a simple method to prospect towards the design and application of heterostructures as efficient electrocatalysts,shedding some light on the development of functional materials in energy chemistry.

关 键 词：Nanowoven ball-like HIERARCHICAL NiS-WS_(2) Hydrogen evolution reaction SYNERGY 

分 类 号：O62[理学—有机化学]