Thermoplastic-imbibed diffusion media to help eliminate MEA edge failure
    3.
    发明申请
    Thermoplastic-imbibed diffusion media to help eliminate MEA edge failure 审中-公开
    热塑性吸收扩散介质有助于消除MEA边缘失效

    公开(公告)号:US20050233202A1

    公开(公告)日:2005-10-20

    申请号:US10827731

    申请日:2004-04-20

    摘要: A fuel cell that includes a blocking agent for preventing hydrogen and air from contacting bare membrane. This in turn prevents the reaction of air and hydrogen gases at outside edges of the catalyst layers. The blocking agent is deposited within diffusion media layers on one or both of the anode and cathode sides of the fuel cell. The blocking agent extends into the diffusion media layers far enough so that it is within outside edges of the catalyst layers. In one embodiment, the blocking agent is a thermoplastic polymer, such as PVDF, that flows into the diffusion media layers in a melted format, where it hardens.

    摘要翻译: 一种燃料电池,其包括用于防止氢气和空气接触裸膜的阻断剂。 这又防止了催化剂层外边缘处的空气和氢气的反应。 阻挡剂沉积在燃料电池的阳极和阴极侧的一个或两个上的扩散介质层内。 阻挡剂延伸到扩散介质层中足够远,使得其在催化剂层的外侧边缘内。 在一个实施方案中,封闭剂是以熔融形式流入扩散介质层的热塑性聚合物,例如PVDF,其在其中变硬。