Preparation of the flower-like MoS2/SnS2 heterojunction as an efficient electrocatalyst for hydrogen evolution reaction

被引：43
|
作者：
Xiao, Xin [1 ]
Wang, Yihui [2 ]
Xu, Xingyou [1 ,2 ]
Yang, Tao [2 ]
Zhang, Dongen [2 ]
机构：
[1] Nanjing Univ Sci & Technol, Sch Chem Engn, Nanjing 210094, Peoples R China
[2] Jiangsu Ocean Univ, Sch Chem Engn, Lianyungang 222005, Peoples R China
来源：
MOLECULAR CATALYSIS | 2020年 / 487卷 / 487期
基金：
中国国家自然科学基金;
关键词：
MoS2/SnS2; heterojunction; Electrocatalyst; Electronic structure optimization; HER; MOS2; NANOSHEETS; SNS2; PHASE; HETEROSTRUCTURES; PERFORMANCE;
D O I：
10.1016/j.mcat.2020.110890
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Layered metal sulfides (LMS) are promising in the electrochemical hydrogen evolution reaction (HER). Unfortunately, LMS shows poor electrical conductivity, only the exposed edges are active for hydrogen evolution reaction. In this work, a MoS2/SnS2 heterojunction with an open 3D flower-like structure is prepared via a simple hydrothermal method. The MoS2/SnS2 heterojunction displays a high HER activity, obtaining a current density of 10 mA cm(-2) at an overpotential of 288 mV and a Tafel slope of 50 mV dec(-1). In addition, the MoS2/SnS2 heterojunction shows high durability for HER. Structure and composition analysis, together with electrochemical measurements show that the MoS2/SnS2 heterojunction could effectively induce the interface-coupling effect and adjust the electronic structure, optimize the kinetics process, in turn, enhance the HER performances.
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页数：8
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