Defect‐Rich Heterogeneous MoS2/NiS2 Nanosheets Electrocatalysts for Efficient Overall Water Splitting

Advanced Science

Zhengxiang Zhong¹  Jian Cao²  Weidong Fei²  Jicai Feng²  Chun Li³  Xiaoqing Si³  Junlei Qi³  Jinghuang Lin³  Pengcheng Wang³  Haohan Wang³ 

[1] MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage State Key Laboratory of Urban Water Resource and Environment School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 China;School of Materials Science and Engineering Harbin Institute of Technology Harbin 150001 China;State Key Laboratory of Advanced Welding and Joining Harbin Institute of Technology Harbin 150001 China;

关键词: defects;    free‐standing;    heterointerfaces;    metal sulfides;    overall water splitting;   

DOI  :  10.1002/advs.201900246

来源: DOAJ

【 摘 要 】

Abstract Designing and constructing bifunctional electrocatalysts is vital for water splitting. Particularly, the rational interface engineering can effectively modify the active sites and promote the electronic transfer, leading to the improved splitting efficiency. Herein, free‐standing and defect‐rich heterogeneous MoS2/NiS2 nanosheets for overall water splitting are designed. The abundant heterogeneous interfaces in MoS2/NiS2 can not only provide rich electroactive sites but also facilitate the electron transfer, which further cooperate synergistically toward electrocatalytic reactions. Consequently, the optimal MoS2/NiS2 nanosheets show the enhanced electrocatalytic performances as bifunctional electrocatalysts for overall water splitting. This study may open up a new route for rationally constructing heterogeneous interfaces to maximize their electrochemical performances, which may help to accelerate the development of nonprecious electrocatalysts for overall water splitting.

【 授权许可】

Unknown