Microwave preparation method of fuel cell dual-component alloy catalyst

Abstract

The invention belongs to the technical field of fuel cells, and particularly relates to a microwave preparation method of a fuel cell dual-component alloy catalyst. The preparation method disclosed bythe invention comprises a precursor suspension preparation process, a microwave reaction process and a catalyst pickling treatment process; platinum and transition metal are synchronously reduced byutilizing an additive and microwaves, the dual-component alloy catalyst is synthesized in one step, and roasting can be carried out at a relatively low temperature or even the roasting process is omitted, so that the growth of alloy particles is effectively inhibited; unalloyed transition metal element can be removed through acid pickling after microwave reduction; the process and equipment are simple, the synthesis period is short, and industrial production is easy to achieve; the transition metal and platinum are used for preparing the dual-component alloy catalyst, so that the use amount ofprecious metal platinum is reduced, and the cost of the catalyst can be effectively reduced; and the prepared catalyst is good in alloying degree, controllable in element proportion and particle sizeand high in catalytic activity and stability.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, and in particular relates to a microwave preparation method of a fuel cell binary alloy catalyst. Background technique [0002] Fuel cell technology is widely used in industries such as automobiles, aviation, energy storage, power generation, and ships. Among them, proton exchange membrane fuel cells have the advantages of high energy efficiency, environmental friendliness, fast start-up speed, and safe and reliable operation. research hotspot. Catalysts are the key materials of fuel cells. The cost and performance of catalysts directly affect the cost and performance of fuel cells. Therefore, the task of developing high-performance and low-cost catalysts is very urgent. [0003] Due to the high difficulty in the preparation of multi-component alloy catalysts, the difficulty in controlling the proportion of elements, and the high difficulty in industrialization, the research on binary alloy c...

AI Technical Summary

Problems solved by technology

In the process of preparing platinum-palladium catalyst in patent CN105642309A, a platinum-based catalyst is used, and then palladium element is added to roast at a high temperature of 700-1000°C to alloy it, which consumes a lot of energy and is not easy to industrialize.

In the current preparation methods of binary alloy catalysts, most of them need to prepare platinum catalyst in advance, and then add another element to high-temperature roasting to form a binary alloy. There are many preparation steps, complicated equipment, difficult control of particle size, high energy consumption and high cost.

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