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Preparation and OER performance of cobalt-nickel bimetallic phosphide
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FU Yalin1**, ZHANG Jie1**, ZHANG Peng1**, ZHANG Ruijun2, WANG Jiabo1*, ZHANG Jibo1*
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1.School of Petrochemical Enginering, Jilin Institute of Chemical Technology, Jilin 132022, China;
2.Ethylene Plant of Petro China Jilin Petrochemical Company, Jilin 132022，China
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Abstract
As one of the efficient, continuous and clean hydrogen production methods, electrochemical water splitting depends on economical, efficient and stable electrocatalysts to a great extent. In this paper, Co2+ and Ni2+ were adsorbed on cation exchange resin by stirring and soaking, and then a series of cobalt-nickel bimetallic phosphides NiCoP-x@C were synthesized by high temperature calcination. The experimental results show that NiCoP-x@C has a porous structure and is rich in porous nanoparticles, which makes a major contribution to OER. In addition, bimetallic doping and the increase of P content also promote the catalytic activity of oxygen evolution reaction. For OER, the overpotential of NiCoP-2B@C is 366 mV, and Tafel is 52.09 mV dec-1. This paper provides a new strategy for the design and preparation of OER catalysts.
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Published: 25 July 2023
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