A fuel cell membrane electrode and a method for preparing the same

By using a carbon material support to form a composite with the proton exchange membrane in the preparation of the fuel cell membrane electrode, the deformation problem of the proton exchange membrane during the spraying process was solved, the uniformity and stability of the catalyst layer were improved, and the performance of the fuel cell was enhanced.

CN122246146APending Publication Date: 2026-06-19TIANNENG BATTERY GROUP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TIANNENG BATTERY GROUP
Filing Date
2026-03-25
Publication Date
2026-06-19

AI Technical Summary

⚠Technical Problem

In the traditional spraying method for preparing fuel cell membrane electrodes, the proton exchange membrane is prone to uneven heating, leading to shrinkage and deformation, which affects the uniformity and integrity of the catalyst layer and causes a decrease in the mass transfer efficiency and charge transfer efficiency of the fuel cell.

⚗Method used

A carbon material support is used as a temporary support. The proton exchange membrane is bonded to the carbon material support by negative pressure adsorption to form a composite. A catalytic layer is sprayed on the surface of the composite to avoid direct contact between the proton exchange membrane and the heating stage, thus protecting the integrity of the catalytic layer.

🎯Benefits of technology

It effectively prevents the proton exchange membrane from shrinking and deforming, improves the structural integrity and activity of the catalyst layer, reduces the scrap rate in the preparation process, and improves the performance of the fuel cell membrane electrode.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention discloses a fuel cell membrane electrode and its preparation method, belonging to the field of fuel cells. The invention uses carbon paper as a temporary support, heat insulation, and anti-shrinkage carrier, effectively preventing proton exchange membrane shrinkage and deformation, thus improving the structural integrity of the CCM. During the second-side spraying process, it protects the already sprayed catalyst layer, enhancing catalytic activity and stability. It effectively solves the core defects of traditional processes, such as proton exchange membrane deformation and catalyst layer damage, significantly reducing the scrap rate in CCM preparation. This invention requires no additional complex equipment; only a constant-temperature adsorption platform is added to the existing spraying equipment, offering strong process flexibility and adaptability. Finally, the CCM prepared using this method has an intact catalyst layer structure and high activity, with no damage to the proton exchange membrane and good flatness, thereby improving the performance of the fuel cell membrane electrode.
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