Preparation of Gas Diffusion Layer for Fuel Cell
    1.
    发明申请
    Preparation of Gas Diffusion Layer for Fuel Cell 审中-公开
    燃料电池气体扩散层的制备

    公开(公告)号:US20090011308A1

    公开(公告)日:2009-01-08

    申请号:US12223566

    申请日:2007-02-02

    IPC分类号: H01M4/96 H01M4/04

    摘要: A common method of preparing a gas diffusion layer for a fuel cell has problems in that a microporous layer is impregnated into a substrate, thereby lowering the porosity of the substrate, and cracks are created on a surface of a gas diffusion layer prepared using the method. Provided is a method of reproducibly preparing a gas diffusion layer with a uniform thickness and no cracks based on the principle of a primer coating method, wherein a first microporous layer is hardly impregnated into a substrate and uniformly covers a surface of the substrate, and at least one microporous layer is further coated on the first microporous layer. Provided is also a fuel cell showing improved performance by enhancing utilization of a catalyst layer and guaranteeing a uniform diffusion of fuel and an efficient discharge of a product.

    摘要翻译: 制备燃料电池用气体扩散层的常用方法存在以下问题:将微孔层浸渍到基板中,从而降低基板的孔隙率,并且在使用该方法制备的气体扩散层的表面上产生裂纹 。 本发明提供一种基于底漆涂布方法的原理,可再现性地制备均匀厚度的气体扩散层和无裂缝的方法,其中第一微孔层几乎不浸渍到基材中并均匀地覆盖基材的表面,并且在 至少一个微孔层进一步涂覆在第一微孔层上。 还提供一种燃料电池,其通过提高催化剂层的利用和保证燃料的均匀扩散以及产品的有效排放而显示出改进的性能。