Paintbrush-like Co doped Cu3P grown on Cu foam as an efficient janus electrode for overall water splitting |
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| Affiliation: | 1. Chemistry Institute for Synthesis and Green Application, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, 315211, China;2. Medical School of Ningbo University, Ningbo, 315211, China;3. College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325000, China;1. International Iberian Nanotechnology Laboratory (INL), Av. Mestre Jose Veiga, Braga 4715-330, Portugal;2. Beijing National Laboratory for Molecular Sciences, Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences, 2 North First Street, Zhongguancun, Beijing 100190, PR China;1. Institute for Clean Energy & Advanced Materials and Faculty of Materials and Energy, Southwest University, Chongqing 400715, China;2. Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, Chongqing 400715, China;1. Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, Shandong, China;2. Key Laboratory of Material Processing and Mold of Ministry of Education, Zhengzhou University, Zhengzhou 450001, Henan, China;3. Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, School of Materials Science and Engineering, Shandong University, Jinan 250061, Shandong, China;1. Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, Institute for Advanced Materials & Department of Chemistry, Hubei Normal University, Huangshi, 435002, PR China;2. Department of Chemistry and Biotechnology, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC, 3122, Australia |
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| Abstract: | In this work, we demonstrated a facile strategy to fabricate paintbrush-like Co Doped Cu3P architecture grown on porous copper foam (Co-Cu3P/CF), which was obtained from cation exchange reaction followed by a pyrolysis assisted phosphorization step. Co-Cu3P/CF showed outstanding electrocatalytic performance for both oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) in 1 M NaOH solution, affording low overpotential of 270 mV to reach the current density of 50 mA cm−2 for OER. As for HER, a low overpotential of 200 mV is required to obtain the same catalytic current density. The overall water electrolyzer by using Co-Cu3P/CF as both anode and cathode showed a low cell voltage of 1.55 V to deliver 10 mA cm−2. The excellent electrocatalytic performance of Co-Cu3P/CF could be ascribed to its paintbrush-like hierarchical architecture, offering plentiful of active sites and accelerating electrolyte penetration, the presence of Co dopant also could rationally modify its electronic properties, and thus lead to the synergetic effects. |
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| Keywords: | Overall water splitting Hydrogen energy Copper phosphide Co dopant Paintbrush-like morphology Synergetic effect |
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