Self-supporting nanoporous CoMoP electrocatalyst for hydrogen evolution reaction in alkaline solution

• DOI: 10.1016/j.jcis.2022.06.085
• Publication Date: 2022-06-22T15:09:32Z
• Authors: Weiguo Tang; Shengli Zhu; Hui Jiang; Yanqin Liang; Zhaoyang Li; Shuilin Wu; Zhenduo Cui
• Keywords: Overpotential; Phosphide; Nanoporous; Bimetallic strip

Efficient catalysts with low costs are very important for hydrogen production. In this work, a nanoporous CoMoP (np-CoMoP) bimetallic phosphide catalyst with a self-supporting structure was prepared by the electrochemical dealloying method. The introduction of Mo tuned the electronic structures around Co and P, optimized the desorption of the H atom, and improved the catalytic activity of cobalt phosphide. The prepared nanoporous Co65Mo15P20 (np-Co65Mo15P20) structures promoted electron transfer and provided more active sites, exhibiting superior hydrogen evolution reaction (HER) performance with the overpotential of 40.8 mV at 10 mA cm-2 and Tafel slope of 46.2 mV dec-1 in alkaline solution. Also, the catalysts exhibited good long-term stability.