Method for preparing platinum-nickel nucleocapsid structure fuel cell catalyst through microwave reduction

Abstract

A method for preparing a platinum-nickel nucleocapsid structure fuel cell catalyst through microwave reduction comprises the following steps: sequentially adding carbon powder and a surface active agent into an organic solvent and uniformly mixing to obtain a mixture A; adding a compound of nickel into the mixture A and uniformly mixing to obtain a mixture B; performing microwave irradiation on the mixture B, wherein the reaction temperature is 80-800 DEG C and the reaction time is 0.01-120 min, and then performing still standing and cooling to obtain a mixture C; adding a compound of platinum into the mixture C and uniformly mixing to obtain a mixture D; performing microwave irradiation on the mixture D, wherein the reaction temperature is 80-800 DEG C and the reaction time is 0.01-120 min, and performing still standing and cooling to obtain a mixture E; performing washing and drying, and the platinum-nickel nucleocapsid structure fuel cell catalyst is obtained. The platinum-nickel nucleocapsid structure catalyst provided by the invention can be compared with commercial platinum-carbon in catalytic performance, is excellent in performance, and has an electronic transferring number approaching 4.

Description

technical field [0001] The invention belongs to the field of fuel cell catalyst materials with a platinum-nickel core-shell structure, and in particular relates to a method for preparing a fuel cell catalyst with a platinum-nickel core-shell structure through microwave reduction. Background technique [0002] The existing petrochemical energy is far from meeting people's needs, and the development and application of fuel cells can alleviate the upcoming energy crisis to a certain extent. Fuel cells not only have a high utilization rate, but also can achieve zero pollution. They are a very good source of energy, and the development prospects of fuel cells are very considerable. However, the precious metal platinum catalyst used in fuel cells is not only scarce in resources but also expensive, so researchers have begun to develop research on platinum alloy catalysts. In the preparation of existing platinum alloy catalysts, there are often problems such as uneven alloy distrib...

AI Technical Summary

Problems solved by technology

However, the precious metal platinum catalysts used in fuel cells are not only scarce but also expensive, so researchers have begun to develop research on platinum alloy catalysts.

In the preparation of existing platinum alloy catalysts, there are often problems such as uneven alloy distribution, excessive alloy particle size, which is not conducive to the full utilization of platinum, high production costs, and low yields.

That is, the preparation method of platinum-nickel alloy catalyst material still has the disadvantages of low utilization rate of platinum, uncontrollable catalyst particle size, uneven dispersion of catalyst particles, high production cost, complex equipment required for reaction, harsh reaction conditions, low yield, and difficulty in industrial production.

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