A PHOSPHORUS-DOPED MOLYBDENUM CARBIDE COMPOSITE CATALYST AND ITS PREPARATION METHOD AND ELECTROCATALYTIC HYDROGEN EVOLUTION APPLICATION

The invention relates to a phosphorus-doped molybdenum carbide composite catalyst as well as a preparation method and electro-catalytic hydrogen evolution application thereof. The method comprises the following steps: by taking biological wastes as a carbon source and molybdenum salt as a metal source, carrying out coordination cross-linking and curing, and then carrying out synchronous phosphating-carbonizing treatment to obtain a solid product. The specific preparation method comprises the following steps: firstly, matching and cross-linking the treated biomass and molybdenum salt; performing microwave-assisted curing treatment to obtain a metal-carbon source precursor; and carrying out synchronous phosphorization-carbonization treatment to obtain the composite material. Results of the embodiment show that the catalyst provided by the invention can reach the current density of 10 mA cm by only needing 118 mV overpotential in an alkaline medium when the HER is in the alkaline medium; in an acid medium, 172mV overpotential is needed, and the current density can reach 10mA cm .