Platinum-carbon catalyst for proton exchange membrane fuel cell and preparation method of platinum-carbon catalyst

• Main Authors: ZHANG DUCHAO, LIU RUOLIN, WANG YONGMI, LIU WEIFENG, PENG BEN, CHEN LIN
• Format: Patent
• Language: Chinese; English
• Published: 30.08.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention relates to a platinum-carbon catalyst for a proton exchange membrane fuel cell and a preparation method thereof, the preparation method comprises the following steps: uniformly mixing ammonium salt and a carbon carrier according to a mass ratio of 0.02-0.20: 1, and roasting to obtain a modified carbon carrier; mixing the modified carbon carrier with a platinum-containing solution to obtain a mixed solution; adjusting the pH value of the mixed solution to 5.0-9.0 by using ammonia water, after ultrasonic treatment, pouring the mixed solution into a reaction kettle, introducing inert gas into the reaction kettle, when the oxygen concentration in the reaction kettle is lower than 0.1 vol%, heating to 70-150 DEG C, then introducing hydrogen into the reaction kettle, stirring for 30-90 minutes at the speed of 200-500 rpm, stopping heating and stirring, and cooling to room temperature to obtain a mixed solution; and when the temperature in the reaction kettle is reduced to below 50 DEG C, stopping intr