A graphene-based waterborne radiation-cured coating, coating method, metal-based bipolar plate and proton exchange membrane fuel cell

By forming a coating on the surface of a metal-based bipolar plate using graphene-based waterborne radiation-curing coating and a three-stage curing process, the problems of easy corrosion and low production efficiency of metal-based bipolar plates are solved, achieving high conductivity and corrosion resistance, which is suitable for proton exchange membrane fuel cells.

CN117736613BActive Publication Date: 2026-03-31UNIV OF SHANGHAI FOR SCI & TECH
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Patent Information

Application Number
CN202311613445.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-11-29
Publication Date
2026-03-31
Estimated Expiration
2043-11-29

AI Technical Summary

Technical Problem

Existing metal-based bipolar plates are prone to corrosion in proton exchange membrane fuel cells. Existing vacuum coating methods have low production efficiency, high cost, and are not easy to produce roll to roll. Graphene composite coatings face significant challenges in dispersibility and interfacial compatibility under high conductivity requirements.

Method used

A graphene-based waterborne radiation-curing coating is formed by mixing graphene derivatives with waterborne radiation-curing resin and combining a three-stage curing process of thermosetting, UV curing and EB curing, and then coating it onto the surface of a metal-based bipolar plate.

Benefits of technology

It achieves high conductivity and corrosion resistance, is suitable for roll-to-roll production, avoids the emission of volatile organic compounds, conforms to the concept of high-efficiency and low-emission production, and the coating provides long-term protection in harsh environments.

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Abstract

The present application relates to a kind of graphene-based waterborne radiation-cured coating, coating method, metal-based bipolar plate and proton exchange membrane fuel cell, coating ingredients include graphene derivative, waterborne radiation-cured resin, graphene derivative is obtained by graphene oxidation modification, graphene derivative is stably dispersed in waterborne radiation-cured resin, the conductivity of graphene derivative is greater than 200S / cm.The coating is applied to the surface of metal-based bipolar plate by any one method of bar coating method, blade coating method, roll coating method and spraying method, and a graphene-based waterborne radiation-cured coating is formed by stage curing.The present application uses graphene as the main component, uses more environmentally friendly waterborne radiation-cured resin as the organic binder component in coating, brings corrosion protection effect to metal-based bipolar plate while ensuring conductivity, does not add heavy metal ions in coating, and does not use volatile organic solvents, safe and environmentally friendly.
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