Catalytic electrode for anion exchange membrane water electrolysis or fuel cell and preparation method thereof

By using a high-temperature synthesis method that loads ruthenium aggregates onto a molybdenum carbide-carbon nanocomposite support, the problems of low efficiency and large amount of precious metals used in anion exchange membrane water electrolysis and fuel cells under strongly alkaline conditions have been solved, achieving high catalyst stability and high-efficiency hydrogen reaction performance.

CN122349448APending Publication Date: 2026-07-07LOTTE CHEM CORP +1
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Patent Information

Application Number
CN202480075901.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2023-11-30
Filing Date
2024-11-29
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

Existing water electrolysis and fuel cells based on anion exchange membranes have low efficiency in electrochemical hydrogen reaction under strongly alkaline conditions, require large amounts of precious metal catalysts, and have poor stability when synthesized at low temperatures, making them unsuitable for practical applications.

Method used

A catalyst in which ruthenium aggregates are supported on a molybdenum carbide-carbon nanocomposite support is used. The strong interaction between ruthenium and the support is achieved through a high-temperature synthesis method to form a two-dimensional structure, thereby improving the utilization rate of precious metals and the stability of the catalyst.

Benefits of technology

It significantly improves the kinetic performance of the catalyst, reduces the amount of precious metals used, enhances the stability of the catalyst and the efficiency of the electrochemical reaction, and strengthens the commercial potential of anion exchange membrane-based devices.

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Abstract

The invention discloses a catalyst for hydrogen evolution reaction or hydrogen oxidation reaction, the catalyst can be used under alkaline conditions, and compared with the existing commercial platinum catalyst, the dynamic characteristic of the catalyst is obviously improved. The invention provides a catalyst for electrochemical hydrogen reaction under alkaline conditions, a preparation method of the catalyst and a ruthenium-based catalytic electrode which comprises the catalyst and can be used as an electrode for a water electrolysis cell and a fuel cell based on an anion exchange membrane, and the catalyst is arranged on the surface of a molybdenum carbide-carbon nano composite material carrier. And 2-20 pieces of ruthenium are loaded in an aggregate form.
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