Oxygen reduction reaction catalyst and preparation method thereof

A catalyst and reaction technology, applied in the field of electrochemistry, can solve the problems of complex reduction process and cumbersome synthesis steps, and achieve the effect of enhancing oxygen reduction activity and simple preparation method
CN114464823APending Publication Date: 2022-05-10先进能源产业研究院(广州)有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
先进能源产业研究院(广州)有限公司
Publication Date
2022-05-10

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Abstract

The invention belongs to the technical field of electrochemistry, and particularly relates to an oxygen reduction reaction catalyst and a preparation method thereof. According to the preparation method, phenanthroline is taken as a complexing agent, potassium chloroplatinite is taken as a platinum source, ethanol and water are taken as solvents, strong complexation of Pt < 2 + > and phenanthroline is utilized, the mixture is mixed at normal temperature to obtain a brown phenanthroline-Pt (II) complex precursor, the precursor has a uniform rod-like structure with a smooth surface, the precursor is taken as a template and is reduced in a hydrogen atmosphere, and the complex is prepared. The porous Pt nanorod is obtained. The porous Pt nanorod, as a catalyst, shows relatively high catalytic activity in the aspect of catalyzing oxygen reduction reaction in an acidic medium.
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Description

technical field

[0001] The invention belongs to the technical field of electrochemistry, and in particular relates to an oxygen reduction reaction catalyst and a preparation method thereof. Background technique

[0002] The oxygen reduction reaction is an extremely critical half-reaction in metal-air batteries and fuel cells, and the oxygen reduction reaction catalyzed by Pt-based nanomaterials is one of the most widely studied electrochemical reactions. However, the practical application of some fuel cells still faces several key issues, such as slow oxygen reduction reaction kinetics at the cathode, carbon monoxide poisoning and alcohol / acid crossover at the anode, and activity reduction due to catalyst dissolution, aggregation, and Ostwald ripening. Therefore, improving the activity, selectivity, and durability of cathode Pt electrocatalysts for ORR is extremely important to promote the commercial application of fuel cells.

[0003] The activity of electrocatalysts is hi...

Claims

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