Powder sintered titanium diffusion layer, and preparation method and application thereof

CN118321556BActive Publication Date: 2026-08-28WESTERN BAODE TECH CO LTD
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Patent Information

Application Number
CN202410457301.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-04-16
Publication Date
2026-08-28
Estimated Expiration
2044-04-16

AI Technical Summary

Technical Problem

[0004]相关研究包括使用聚四氟乙烯涂层赋予钛基扩散层疏水性，探索聚四氟乙烯的最佳负载和制造方法，公开号为CN109868487A，专利名称为一种金属基底气体扩散层及其制备和应用的中国专利申请文件公开了以钛网为基底，疏水剂为聚四氟乙烯制备的金属基底气体扩散层，尽管聚四氟乙烯的添加改善了燃料电池模式下的性能，但由于聚四氟乙烯本身具有一定的电绝缘性以及疏水性，在电解模式下会影响氧气在电极表面的溶解和扩散以及电流的传输效率性能

Benefits of technology

[0026]本发明提供的一种粉末烧结钛扩散层及其制备方法，由涂覆一定含氧量钛粉涂料的生坯膜一步烧结为表面生长疏水性Ti6O的粉末烧结钛扩散层，本发明的技术方案工艺过程简单易行，不但节省生产成本，也可实现大规模制造；生长的疏水性Ti6O分布密度和长度可控调节使得粉末烧结钛扩散层表面的亲疏水区域实现可定制化，有望作为质子交换膜一体式再生燃料电池气体扩散层材料，有效解决双向模式下的水管理冲突。

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Abstract

The application provides a powder sintered titanium diffusion layer and a preparation method and application thereof, and belongs to the technical field of regenerative fuel cells, and comprises the following steps: preparing a coating A and a coating B, coating the coating A on a substrate to obtain a green film, coating the coating B on the surface of the green film to obtain a composite green film, and performing pretreatment, degreasing and sintering on the composite green film to obtain a powder sintered titanium diffusion layer with a hydrophobic Ti6O surface. The application provides a powder sintered titanium diffusion layer and a preparation method and application thereof, and realizes simple preparation of a titanium-based diffusion layer with adjustable surface hydrophilicity and hydrophobicity.
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Citation Information

Patent Citations

  • Gas diffusion layer with metal substrate, and preparation method and application of gas diffusion layer

    CN109868487A

  • Porous material and preparation method thereof

    CN118324515A