Electrospun fibrous active bimetallic electrocatalyst for hydrogen evolution |
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| Affiliation: | 1. Dr. M.A Kazi Institute of Chemistry, University of Sindh Jamshoro, Sindh, 76080, Pakistan;2. Far East and South East Asia Study Center, University of Sindh, Jamshoro, 76080, Sindh, Pakistan;3. Institute of Plant Science University of Sindh Jamshoro, Sindh, 76080, Pakistan;4. Institute of Chemistry University of Shah Abdul Latif University Khairpur Mirs, Sindh Pakistan;5. Institute of Physics University of Shah Abdul Latif University Khairpur Mirs, Sindh Pakistan;6. Department of Electrical Engineering, Mehran UET, SZAB Campus, Mirs, Khairpur, 76080 Sindh, Pakistan;1. State Key Laboratory of Information Photonics and Optical Communications, and School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, PR China;2. School of Science, China University of Geosciences, Beijing 100083, PR China;1. Dr. M.A Kazi Institute of Chemistry, University of Sindh, Jamshoro, 76080, Sindh, Pakistan;2. Centre for Pure and Applied Geology, University of Sindh, Jamshoro, 76080, Pakistan;3. Department of Basic Sciences and Related Studies, Mehran University of Engineering and Technology, Jamshoro, 76080, Pakistan;4. Faculty of Engineering and Technology, University of Sindh, 76080, Pakistan;1. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Innovation Center for Textile Science and Technology, Donghua University, Shanghai 201620, PR China;2. Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371 Singapore;3. Research Center for Analysis and Measurement, Donghua University, Shanghai 201620, PR China;1. Center for Nanofibers and Nanotechnology, Department of Mechanical Engineering, National University of Singapore, 119260, Singapore;2. Key Laboratory of Textile Science & Technology, Ministry Education, College of Textiles, Donghua University, 2999 North Renmin Road, Songjiang, Shanghai 201620, China;3. THDC Institute of Hydropower Engineering and Technology Tehri, Uttarakhand Technical University, Dehradun, Uttarakhand, 249001, India;1. Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, PR China;2. Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, PR China |
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| Abstract: | Fabricating earth-abundant bifunctional water splitting electrocatalysts with high efficiencies to replace noble metal-based Pt and IrO2 catalysts is in great demand for the development of clean energy conversion technologies. Molybdenum disulfide (MoS2) nanostructures have attracted much attention as promising material for hydrogen evolution reaction (HER). The production of hydrogen gas by help of potential efficient earth abundant metal oxides, and stable electrolysis seems a promising for hydrogen evolution reaction pathway in 1 M potassium hydroxide electrolyte media is a hot research topic in the field for clean energy conversion, renewable energies and storage. Here we propose asystem composed NiO nanostructures and MoS2 deposited on (MoS2@NiO). Here, by hydrothermal method NiO prepared and MoS2@NiO by an electrospinning technique complex, can be used as catalyst to produce a large amount of hydrogen gas bubbles. The NiO nanostructures composite having highest synergistic behavior fully and covered by the MoS2. For the MoS2@NiO nano composite catalyst, experiment applied in 1 M KOH for the production of hydrogen evolution reaction which exhibits distinct properties from the bulk material. Overpotential values recorded low 406 mV and current density 10 mA cm?2 measured. Co-catalysts characterized by using different techniques for deep study as scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). Owing to their unique structure, as-prepared nanocomposite exhibited enhanced catalytic performance for HER due to high electroactive surface area and swift electron transfer kinetics. Based on the HER polarization curves at low potential electrochemical to examine the effects of intercalants HER catalytic efficiency. Our findings establish low Tafel slope (44 mV/decade) and the catalyst stable for at least 13 h. This simple exploitation of MoS2@NiO composite catalysts depending on the intended application of their electrochemistry. |
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| Keywords: | Electrocatalyst HER Composite |
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