High performance CoMoP ternary ionics nanocomposite electrocatalyst for glycerol oxidation coupling with alkaline hydrogen production

Coupling the glycerol oxidation and hydrogen evolution reactions can significantly reduce the energy consumption of the electrolytic water hydrogen production system, achieve hydrogen production while preparing high value-added chemicals at a lower cost, and greatly improve the economic value of the entire hydrogen production system. In this work, CoMoP ternary nanocomposite has been successfully decorated onto the surface of 304 stainless steel mesh. The surface decoration with CoMoP ternary ionics nanocomposite greatly enhances the electron transfer in the catalytic system. The optimized catalyst exhibits a high activity for electrocatalytic glycerol oxidation coupling with alkaline hydrogen evolution reaction. A hydrogen-producing electrolysis cell with a formate faradaic efficiency of 60 % has been assembled, which can achieve a decomposition voltage as low as 1.60 V at a current density of 10 mA cm^-2. More importantly, the respective roles of the three chemical elements in the CoMoP ternary composite electrocatalyst have been thoroughly studied by DFT. This study provides scientific insight into developing future ternary systems for electrocatalysis.