Nickel phosphide decorated Pt nanocatalyst with enhanced electrocatalytic properties toward common small organic molecule oxidation and hydrogen evolution reaction: A strengthened composite supporting effect |
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| Authors: | Fei Zhang Huijie Meng Wenjuan Zhang Mei Wang Jinping Li Xiaoguang Wang |
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| Affiliation: | 1. Laboratory of Advanced Materials and Energy Electrochemistry, Research Institute of Surface Engineering, Taiyuan University of Technology, Taiyuan, 030024, China;2. Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, Taiyuan, Shanxi, 030024, China |
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| Abstract: | In this paper, well-dispersed Ni2P-NiP2-Pt/CNTs catalyst promoted by nickel-phosphorus compounds was readily synthesized by a two-step hydrothermal process. The as-synthesized Ni2P-NiP2-Pt/CNTs displayed improved electrocatalytic properties towards electro-oxidation of common small organic fuels such as methanol, ethanol and formic acid in contrast with Pt/CNTs and Pt/CNPs in acidic electrolytes. Meanwhile, the Ni2P-NiP2-Pt/CNTs catalyst also exhibited the excellent performance toward hydrogen evolution reaction with a more negative onset potential (?15 mV) and a smaller Tafel slope (29.8 mV dec?1) when compared with Pt/CNTs (?29 mV, 30.6 mV dec?1) and Pt/CNPs (?32 mV, 31.3 mV dec?1) in 1.0 M H2SO4 solution. The catalytic activity enhancement possibly derives from the induced large specific surface area of carbon nanotubes as well as the strengthened synergistic effect between multiple supporting interactions. |
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| Keywords: | Co-synergistic supporting effect Nickel phosphide Multi-wall carbon nanotubes Electro-oxidation Hydrogen evolution reaction |
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