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Laser-direct-writing of 3D self-supported NiS2/MoS2 heterostructures as an efficient electrocatalyst for hydrogen evolution reaction in alkaline and neutral electrolytes
- Source :
- Chinese Journal of Catalysis. 40:1147-1152
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- Searching for low-cost widely applicable electrocatalysts for hydrogen production is very important. Here, 3D self-supported NiS 2 /MoS 2 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 NiS 2 and MoS 2 . This work provides a new strategy to study interfacial engineering and the mechanism of interface enhancement.
- Subjects :
- Materials science
Nanostructure
Heterojunction
02 engineering and technology
General Medicine
Electrolyte
010402 general chemistry
021001 nanoscience & nanotechnology
Electrocatalyst
01 natural sciences
0104 chemical sciences
Catalysis
Chemical engineering
Hydrogen evolution
0210 nano-technology
Current density
Hydrogen production
Subjects
Details
- ISSN :
- 18722067
- Volume :
- 40
- Database :
- OpenAIRE
- Journal :
- Chinese Journal of Catalysis
- Accession number :
- edsair.doi...........f90ab70f2072d7c907d937ce0c27c25f