Preparation method of fuel cell catalyst

Abstract

The invention provides a preparation method of a fuel cell catalyst. The preparation method comprises the steps of mixing calcium, magnesium and palladium to form a mixture; adding one or a combination of two of copper or silver to the mixture to form a mixture to be smelted; smelting the mixture to be smelted to form an amorphous alloy; preparing the amorphous alloy into an amorphous ribbon; andcorroding the amorphous ribbon in an acidic solution to remove calcium and magnesium so as to form the nano-porous catalyst. The catalyst prepared according to the preparation method of the fuel cellcatalyst has a high specific surface area; when the catalyst is applied to a methanol fuel cell anode catalyst, an electro-catalysis test result shows that the addition of Cu and Ag elements not onlycan significantly improve the methanol catalytic activity and poisoning resistance of nano-porous Pd, but also can reduce the cost of the catalyst, and the catalyst has a good application prospect inthe aspect of the methanol fuel cell anode catalyst.

Description

technical field [0001] The invention relates to the technical field of catalyst preparation, in particular to a method for preparing a fuel cell catalyst. Background technique [0002] Direct methanol fuel cells have the advantages of high specific energy density, fast start-up at low temperature, clean and environmentally friendly fuel, simple battery structure and small size, and have broad application prospects in national defense, military industry and commercial fields. At present, Pt alloy nanoparticles are the longest-studied and most widely used anode methanol electrocatalytic materials in direct methanol fuel cells. However, the metal Pt is expensive, and it is easy to adsorb and poison the catalytic intermediate product CO, which has become the biggest bottleneck restricting the breakthrough of its research. Therefore, seeking alternative catalyst materials for Pt with low production cost and high catalytic efficiency is a topic of great research value. [0003] ...

AI Technical Summary

Problems solved by technology

However, whether it is a Pt alloy or a Pd alloy catalyst, there is a problem that the catalyst nanoparticles are agglomerated during the reaction process, resulting in a decrease in electrochemically active sites and a decrease in catalytic activity.

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