A bridged Fe-Cu bimetallic carbon nanocage oxygen reduction reaction electrocatalyst, a preparation method and application thereof

By preparing a bridged Fe-Cu bimetallic carbon nanocage oxygen reduction reaction electrocatalyst, the problem of poor durability of Fe-based single-atom catalysts in acidic media was solved by utilizing the hierarchical porous structure and the synergistic catalytic effect of heterometals. This resulted in high-efficiency oxygen reduction reaction performance and stability, and reduced the cost of fuel cells.

CN117673380BActive Publication Date: 2026-07-10SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
Filing Date
2022-08-31
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Existing Fe-based single-atom catalysts exhibit poor durability in acidic media, making it difficult to meet the practical application requirements of oxygen reduction reaction at the cathode of fuel cells.

Method used

We developed a bridged Fe-Cu bimetallic carbon nanocage electrocatalyst for oxygen reduction reaction. By forming a connected hierarchical porous nanocage structure through a zeolite imidazole metal covalent organic framework, we optimized the adsorption and activation of O2, limited the formation of Fe2+, and suppressed the Fenton reaction by utilizing the Fe/Cu bimetallic atom bridging configuration and the synergistic catalytic effect between the heterometals.

Benefits of technology

It exhibits ORR catalytic performance similar to commercial Pt/C in acidic media, with high catalytic activity, durability, and stability, reducing the application cost of cathode catalysts.

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Abstract

The application relates to a bridged Fe-Cu bimetal carbon nanocage oxygen reduction reaction electrocatalyst as well as a preparation method and application thereof. The bridged Fe-Cu bimetal carbon nanocage oxygen reduction reaction electrocatalyst has a connected multi-level hole nanocage formed by a zeolitic imidazole metal covalent organic framework and Fe / Cu bimetal atoms bridged in the connected multi-level hole nanocage structure; wherein the Fe / Cu bimetal atoms have a bridged diatomic configuration, and are preferably N4Fe-CuN4 structures; wherein the electronic state of the Cu atom is Cu + , and the electronic state of the Fe atom is Fe 3+ .
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