Facile fabrication of a binary NiCo phosphide with hierarchical architecture for efficient hydrogen evolution reactions |
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| Affiliation: | 1. College of Materials and Textiles, Zhejiang Sci-Tech University, Hangzhou, 310018, PR China;2. Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, PR China;1. Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science & Technology, Xi’an Shaanxi 710021, PR China;2. College of Chemistry & Chemical Engineering, Shaanxi University of Science & Technology, Xi’an Shaanxi 710021, PR China;1. College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing 400047, China;2. Shenyang National Laboratory for Materials Science (SYNL), Institute of Metal Research (IMR), Chinese Academy of Sciences (CAS), No. 72 Wenhua Road, Shenyang 110016, China;1. Key Laboratory for Soft Chemistry and Functional Materials of Ministry Education, Nanjing University of Science and Technology, Nanjing 210094, China;2. Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 106, Taiwan, ROC;1. Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China;2. Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China;1. School of Chemical Engineering and Technology, Xinjiang Univerisity, Urumqi 830046, PR China;2. School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, PR China;3. School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225009, PR China;1. Department of Mechanical Engineering, Iowa State University, Ames, IA 50011, USA;2. William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH 43210, USA |
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| Abstract: | Exploring and designing efficient non-noble catalysts formed by element doping and nanostructure modification for the hydrogen evolution reaction (HER) is of critical importance with respect to sustainable resources. Herein, we have prepared a three-dimensional binary NiCo phosphide with hierarchical architecture (HA) composed of NiCoP nanosheets and nanowires grown on carbon cloth (CC) via a facile hydrothermal method followed by oxidation and phosphorization. Due to its unique hierarchical nanostructure, the NiCoP HA/CC electrocatalyst exhibits excellent performance and good working stability for the HER in both acidic and alkaline conditions. The obtained NiCoP HA/CC shows excellent HER activity with a low potential of 74 and 89 mV at 10 mA cm−2, a small Tafel slope of 77.2 and 99.8 mV dec−1 and long-term stability up to 24 h in acidic and alkaline electrolyte, respectively. NiCoP HA/CC, a non-noble metal material, is a promising electrocatalyst to replace noble metal-based electrocatalysts for the HER. |
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| Keywords: | Binary NiCo phosphide Hierarchical architecture Electrocatalyst HER |
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