▎ 摘　　要

NOVELTY - Preparing bimetallic phosphide-carbon electrocatalytic hydrogen evolution material comprises (i) dissolving nickel salt and sodium citrate in deionized water to form solution A, dissolving potassium hexacyanocobaltate (III) in deionized water to form solution B, and washing using water and ethanol for many times to obtain cobalt-nickel Prussian blue analogue (Co-Ni PBA), (ii) dissolving carbon material in deionized water and stirring vigorously, and (iii) placing Co-Ni PBA/carbon and sodium hypophosphite monohydrate in a mass ratio of 1:20 on the back and front ends of the porcelain boat and placing them in a tube furnace, increasing the temperature to 350 degrees C at heating rate of 1-8 degrees C/minutes under nitrogen atmosphere, maintaining the temperature for 2-4 hours, and reducing the temperature to room temperature. USE - The method is useful for preparing bimetallic phosphide-carbon electrocatalytic hydrogen evolution material. ADVANTAGE - The material: is economical and environmentally friendly; and has simple and convenient synthesis method, excellent electrocatalytic hydrogen evolution performance in electrolytes of different pH, and broad application prospects. DETAILED DESCRIPTION - Preparing bimetallic phosphide-carbon electrocatalytic hydrogen evolution material comprises (i) dissolving nickel salt and sodium citrate in deionized water to form solution A, dissolving potassium hexacyanocobaltate (III) in deionized water to form solution B, mixing solutions A and B under magnetic stirring for 5-10 minutes, allowing to stand at room temperature for 36-48 hours, collecting the precipitate by centrifugation, and washing using water and ethanol for many times to obtain cobalt-nickel Prussian blue analogue (Co-Ni PBA), where the molar ratio of nickel salt, sodium citrate and potassium hexacyanocobaltate (III) is 6-10:6-4, (ii) dissolving carbon material in deionized water and stirring vigorously, performing ultrasonic treatment to form a uniform solution, where the power of the ultrasonic treatment is 300-500 W, and the ultrasonic time is 10-30 minutes, adding Co-Ni PBA to the solution, continuing ultrasonic treatment for 10-30 minutes, collecting the precipitate by centrifugation, and washing using water and ethanol for many times to obtain Co-Ni PBA/carbon, where the mass ratio of the added carbon material and Co-Ni PBA is X:100, X is 0-10, and (iii) placing Co-Ni PBA/carbon and sodium hypophosphite monohydrate in a mass ratio of 1:20 on the back and front ends of the porcelain boat and placing them in a tube furnace, increasing the temperature to 350 degrees C at heating rate of 1-8 degrees C/minutes under nitrogen atmosphere, maintaining the temperature for 2-4 hours, and reducing the temperature to room temperature to obtain bimetallic phosphide-carbon electrocatalytic hydrogen evolution material, i.e. cobalt phosphide/nickel phosphide/carbon (Co2P/Ni2P/C). An INDEPENDENT CLAIM is also included for bimetallic phosphide-carbon electrocatalytic hydrogen evolution material prepared by the method above mentioned method, i.e. Co2P/Ni2P/C.