Proton exchange membrane (PEM) electrochemical cell having an integral, electrically-conductive, resiliently compressible, porous pad
    1.
    发明申请
    Proton exchange membrane (PEM) electrochemical cell having an integral, electrically-conductive, resiliently compressible, porous pad 有权
    质子交换膜(PEM)电化学电池具有整体的,导电的,弹性可压缩的多孔垫

    公开(公告)号:US20060131166A1

    公开(公告)日:2006-06-22

    申请号:US11351562

    申请日:2006-02-10

    IPC分类号: C25B9/00

    摘要: Electrolysis cell comprises, in one embodiment, a proton exchange membrane (PEM), an anode positioned along one face of the PEM, and a cathode positioned along the other face of the PEM. A multi-layer metal screen for defining a first fluid cavity is placed in contact with the outer face of the anode, and an electrically-conductive, compressible, spring-like, porous pad for defining a second fluid cavity is placed in contact with the outer face of the cathode. The porous pad comprises a mat of carbon fibers bound together with one or more, preferably thermoplastic, resins, the mat having a density of about 0.2-1.5 g/cm3. Cell frames are placed in peripheral contact with the metal screen and the compression pad for peripherally containing fluids present therewithin. Electrically-conductive separators are placed in contact with the metal screen and the compression pad for axially containing fluids present therewithin. A plurality of the cells may be arranged in series in a bipolar configuration without requiring a separate compression pad between cells (for gas pressure differentials up to about 400 psi or greater). The invention is also directed to a fuel cell wherein the pad replaces the carbon fiber paper or carbon fiber cloth in contact with the cathode or anode.

    摘要翻译: 在一个实施方案中,电解池包括质子交换膜(PEM),沿着PEM的一个面定位的阳极和沿着PEM的另一个面定位的阴极。 用于限定第一流体腔的多层金属屏幕被放置成与阳极的外表面接触,并且用于限定第二流体腔的导电的,可压缩的弹簧状多孔垫与 阴极的外表面。 多孔垫包括与一种或多种,​​优选热塑性树脂结合在一起的碳纤维毡,该垫具有约0.2-1.5g / cm 3的密度。 细胞框架与金属屏幕和用于周边地含有存在于其中的流体的压缩垫放置在周边接触中。 导电分离器被放置成与金属屏幕和压缩垫接触,用于轴向地容纳存在于其中的流体。 多个电池可以双极配置串联布置,而不需要电池之间的单独压缩焊盘(用于高达约400psi或更大的气体压力差)。 本发明还涉及一种燃料电池,其中衬垫代替与阴极或阳极接触的碳纤维纸或碳纤维布。