▎ 摘　　要

NOVELTY - Method for preparing platinum composite material, involves (a) mixing choline chloride and glycol, stirring at constant temperature until forming uniform low-eutectic solvent, (b) adding the metal chloride into the low co-melting solvent prepared in the step (a), stirring at constant temperature, adding the second phase solid particles, ultrasonically dispersing and constant temperature mixing and stirring to obtain the turbid electrolyte solution, (c) the three-electrode system comprises a counter electrode, a working electrode, a reference electrode (d) adding the electrolyte solution into the electrolytic cell of step (c), and placing in the temperature control magnetic stirring electric heating sleeve for controlling the temperature, the rotating speed is 400-1000 rpm, and (e) taking out the composite material prepared by the step (d) composite electro-deposition from the electrolytic cell, using de-ionized water, washing, and finally drying. USE - The method is used for preparing platinum composite material, which is used in hydrogen production by electrolysis of water. ADVANTAGE - The method realizes the controllable dissolution of the platinum electrode to directly prepare the platinum composite material. DETAILED DESCRIPTION - Method for preparing platinum composite material, involves (a) mixing choline chloride and glycol, stirring at constant temperature until forming uniform low-eutectic solvent, (b) adding the metal chloride into the low co-melting solvent prepared in the step (a), stirring at constant temperature, adding the second phase solid particles, ultrasonically dispersing and constant temperature mixing and stirring to obtain the turbid electrolyte solution, (c) where the electrolytic cell comprises an electrolytic cell and a three-electrode system, the three-electrode system comprises a counter electrode, a working electrode, a reference electrode (d) adding the electrolyte solution prepared in the step (b) into the electrolytic cell of step (c), and placing in the temperature control magnetic stirring electric heating sleeve for controlling the temperature at 60-80 degrees C, applying electric potential to the electrolytic cell system by electro chemical working station, controlling the composite electro-deposition time is 60-240 minutes, the rotating speed is 400-1000 rpm, and (e) taking out the composite material prepared by the step (d) composite electro-deposition from the electrolytic cell, using de-ionized water to wash for many times, washing with absolute ethyl alcohol for several times, and finally drying.