Laser-direct-writing of 3D self-supported NiS2/MoS2 heterostructures as an efficient electrocatalyst for hydrogen evolution reaction in alkaline and neutral electrolytes

作     者：Peng-Fei Cheng Ting Feng Zi-Wei Liu De-Yao Wu Jing Yang 程鹏飞;冯婷;刘紫薇;吴德垚;杨静

作者机构：Institute of New-Energy MaterialsKey Laboratory of Advanced Ceramics and Machining Technology of Ministry of EducationSchool of Materials Science and EngineeringTianjin UniversityTianjin 300072China 

出 版 物：《Chinese Journal of Catalysis》 (催化学报（英文）)

年 卷 期：2019年第40卷第8期

页      面：1147-1152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] 

基　　金：financially supported by the National Natural Science Foundation of China(51572188 and 51822106)~~ 

主　　题：Heterostructure Hydrogen evolution reaction Laser-direct-writing 

摘      要：Searching for low-cost widely applicable electrocatalysts for hydrogen production is very important. Here, 3D self-supported NiS2/MoS2 heterostructures were synthesized via a one-step millisecond- laser-direct-writing method;these structures exhibited excellent hydrogen evolution reaction activities over a wide pH range. The current density of 10 mA cm^-2 could be reached at low overpotentials of 98 and 159 mV in alkaline and neutral electrolytes, respectively. Such an outstanding electrocatalytic performance should be attributed to the integration of the 3D self-supported nanostructures, the high conductivity of the framework, and particularly, the incalculable heterointerfaces formed between NiS2 and MoS2. This work provides a new strategy to study interfacial engineering and the mechanism of interface enhancement.