Platinum-rhenium alloy catalyst, preparation method, and fuel cell

Abstract

A platinum-rhenium alloy catalyst preparation method includes the following steps: (1) dispersing a carbon carrier, a platinum source and an alkaline substance in ethylene glycol for microwave reaction, acidizing and depositing the solution after the reaction is finished, washing with water, and drying to obtain a Pt/C precursor; (2) dispersing the Pt/C precursor, a phosphorus source and a rhenium precursor in water, carrying out ultrasonic treatment, drying by distillation after treatment, and grinding to obtain a platinum-rhenium alloy catalyst precursor; and (3) calcining the platinum-rhenium alloy catalyst precursor in an inert atmosphere, and grinding after the calcining to obtain a platinum-rhenium alloy catalyst. The platinum-rhenium alloy catalyst is prepared through a two-step method, rhenium and platinum are alloyed through high-temperature pyrolysis of the phosphorus source, thus solving the problem that simultaneous reduction is difficult due to the reduction potential difference of platinum and rhenium.

Dependencies are inferred from the claim text.