Advanced catalysts for hydrogen evolution reaction based on MoS2/NiCo2S4 heterostructures in Alkaline Media |
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| Affiliation: | 1. College of Electronic Engineering, Nanjing Xiaozhuang University, Nanjing, 211171, China;2. Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructures and Jiangsu Provincial Laboratory for NanoTechnology, Nanjing University, Nanjing, 210093, China;1. Institut Européen des Membranes, IEM – UMR 5635, Univ Montpellier, CNRS, ENSCM, Montpellier, France;2. Institut Charles Gerhardt Montpellier, ICGM – UMR 5253, Univ Montpellier, CNRS, ENSCM, Montpellier, France;1. State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, CAS, Changchun, 130022, China;2. School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026, China;1. State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China;2. Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, Hangzhou 310013, China;3. Guangdong Provincial Key Laboratory of Advance Energy Storage Materials, South China University of Technology, Guangzhou, 510640, China;1. School of Mechatronic Engineering, Xi''an Technological University, Xi''an, 710021, China;2. Department of Electrical Engineering, University of Bonab, Bonab, Iran;3. Social Research Institute, Chulalongkorn University, Bangkok, 10330, Thailand;1. School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, PR China;2. Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, PR China;3. Tianjin Engineering Research Center of Functional Fine Chemicals, Tianjin, PR China;4. Department of Chemical Engineering, Renai College of Tianjin University, Tianjin, 301636, PR China |
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| Abstract: | There are great challenges to develop and fabricate a high performance, low-cost and stable non-platinum catalyst for hydrogen evolution reaction (HER). In our study, we firstly developed a simple method to successfully fabricate a new MoS2/NiCo2S4 heterostructure by a two-step hydrothermal method, and studied the HER property of MoS2/NiCo2S4, where the as-prepared NiCo-layered double hydroxide (NiCo-LDH) was used as the precursor of NiCo2S4. Benefitting from the prominent synergistic effect between NiCo2S4 and MoS2, MoS2 provided massive catalytic active edge sites, and NiCo2S4 enhanced the conductivity of the composite. As a result, the MoS2/NiCo2S4 showed excellent HER catalytic activity, with a current of 10 mA cm?2 at overpotential of 94 mV for HER and a low Tafel slope of 46 mV dec?1, and good cycling stability in Alkaline Media. As well as, our work offered one promising high active and stable non-platinum catalyst for overall water splitting. |
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| Keywords: | Hydrogen evolution reaction Hybrid nanostructure Electrocatalyst Synergistic effect |
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