Facile preparation of N,P co-doped molybdenum carbide / porous carbon rough microspheres for efficient electrocatalytic hydrogen evolution |
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| Affiliation: | 1. Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, PR China;2. College of Materials Science and Engineerig, Changsha University of Science and Technology, Changsha, 410114, PR China;1. State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao 266580, PR China;2. College of Science, China University of Petroleum (East China), Qingdao 266580, PR China;1. State Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, China;2. Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, China;1. School of Chemistry and Chemical Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, PR China;2. Testing Center, Yangzhou University, Yangzhou City, Jiangsu, 225009, China;1. College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, 1# Dongsanlu, Erxianqiao, Chengdu, 610059, Sichuan, PR China;2. College of Ecology and Environement, Chengdu University of Technology, 1# Dongsanlu, Erxianqiao, Chengdu, 610059, Sichuan, PR China;1. College of Chemistry and Molecular Engineering, Zhengzhou University, 100 Science Road, Zhengzhou 450001, PR China;2. Institute of Chemical Industry of Forest Products, CAF, National Engineering Lab for Biomass Chemical Utilization, Key and Open Lab on Forest Chemical Engineering, SFA, Key Lab of Biomass Energy and Material, Jiangsu Province, Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210042, PR China;3. Integrated Analytical Laboratories, 273 Franklin Road, Randolph, NJ 07869, United States;4. Department of Chemistry, Tsinghua University, 1 Tsinghua Park, Beijing 100084, PR China |
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| Abstract: | Despite that diverse carbon materials have been designed as framework to anchor molybdenum carbide to efficiently improve catalytic performance for hydrogen evolution reaction (HER), simply and uniformly hybridizing Mo and carbon source to form well-defined heteroatom-doped Mo2C/carbon nanostructure using suitable precursors to expose the more active sites and optimize electron structure Mo2C is still great challenge. Herein, we design and fabricate N, P-co-doped molybdenum carbide/porous carbon hybrid rough microspheres by a simple hydrothermal and followed annealing method using red jujube and phosphomolybdic acid as carbon and Mo source, respectively. Benefiting from carbon framework derived from red jujube inhibiting the aggregation of Mo2C nanoparticles, N, P co-doping changing the electro-structure of the adjacent Mo and C atoms, and rough micro-spherical structure increasing the electrolyte-active materials contact surface, the resulting material exhibits high electrocatalytic performance with a low overpotential of 103 and 80 mV at current densities of 10 mA cm−2, a small Tafel slope of 57 and 46 mV dec−1, respectively, in acidic and alkaline electrolyte, and excellent stability. The convenient resource, facile preparation and high performance make this material showing great potential in cost effective hydrogen production. |
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| Keywords: | Electrocatalytic hydrogen evolution N, P co-doped molybdenum carbide / porous carbon rough microspheres Molybdenum carbide Biomass-derived carbon |
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