Coupling interface structure in NixS/Cu5FeS4 hybrid with enhanced electrocatalytic activity for alkaline hydrogen evolution reaction
| Autor: | Guangxue Yang, Ping Ma, Yang Liu, Fei Yuan, Jiantai Ma, Jiaheng Qin, Shicheng Luo, Shuo Wang, Yutong Luo |
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| Rok vydání: | 2020 |
| Předmět: |
Tafel equation
Materials science Nanoparticle 02 engineering and technology Electrolyte engineering.material Overpotential 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Catalysis Biomaterials Coupling (electronics) Colloid and Surface Chemistry Chemical engineering Bornite engineering Hydrogen evolution 0210 nano-technology |
| Zdroj: | Journal of Colloid and Interface Science. 578:668-676 |
| ISSN: | 0021-9797 |
| Popis: | Bornite (Cu5FeS4) exhibits great potential for the alkaline hydrogen evolution reaction (HER) and few studies have been conducted on its electrocatalytic activity. Herein, we successfully fabricate NixS/Cu5FeS4 hybrid catalyst with interface structure between NixS nanoparticles (NPs) and Cu5FeS4 NPs. The NixS/Cu5FeS4 hybrid catalyst exhibits favorable HER performances in 1.0 M KOH electrolyte and demonstrates smaller overpotential and lower Tafel slope than bare NixS NPs and Cu5FeS4 NPs. The remarkable HER performances are attributed to the strongly coupling interface structure between NixS NPs and Cu5FeS4 NPs, which leads to synergistic effect optimizing the HER activity and enhancing the charge transfer during catalytic process. This work provides a promising strategy for the construction of Cu5FeS4-based hybrid catalyst and its application in energy systems. |
| Databáze: | OpenAIRE |
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