Cadmium-based composite material containing two P-O groups as well as preparation method and application of cadmium-based composite material

The invention discloses a cadmium-based composite material containing two P-O groups as well as a preparation method and application of the cadmium-based composite material, and belongs to the technical field of electrocatalytic oxygen reduction, and a Cd2PxOy/NC catalyst is obtained by carrying out high-temperature phosphating treatment on a Cd (NH3) 2Cl2/PPy precursor. The intrinsic catalytic activity of the catalyst is improved by forming a P-O bond in a carbon material, and the Cd2PxOy/NC composite material containing two P-O groups shows efficient oxygen reduction performance in an alkaline solution. As a zinc-air battery cathode material, the Cd2PxOy/NC catalyst has good long-term stability, does not decline after being kept for about 300 hours, and can reach the power density of 208.1 mW.cm . Therefore, the novel cadmium-based Cd2PxOy/NC composite material containing the two P-O groups can replace a noble metal Pt/C catalyst to be used for an oxygen reduction reaction, so that the cost is reduced.