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Citation: Peng-Fei Cheng, Ting Feng, Zi-Wei Liu, De-Yao Wu, Jing Yang. Laser-direct-writing of 3D self-supported NiS₂/MoS₂ heterostructures as an efficient electrocatalyst for hydrogen evolution reaction in alkaline and neutral electrolytes[J]. Chinese Journal of Catalysis, ;2019, 40(8): 1147-1152. doi: S1872-2067(19)63390-5 shu

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

Institute of New-Energy Materials, Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China

Received Date: 15 March 2019
Revised Date: 28 April 2019

Fund Project: This work was financially supported by the National Natural Science Foundation of China (51572188 and 51822106).

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.
- Heterostructure,
- Hydrogen evolution reaction,
- Laser-direct-writing
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通讯作者: 陈斌, bchen63@163.com

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