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    Method to make conductive hydrophilic fuel cell elements
    16.
    发明授权
    Method to make conductive hydrophilic fuel cell elements 有权
    制造导电亲水性燃料电池元件的方法

    公开(公告)号：US08029943B2

    公开(公告)日：2011-10-04

    申请号：US11068489

    申请日：2005-02-28

    Applicant: Gayatri Vyas ,  Thomas A. Trabold ,  Stephen William Gaarenstroom

    Inventor： Gayatri Vyas ,  Thomas A. Trabold ,  Stephen William Gaarenstroom

    IPC: H01M8/04 ,  H01M4/66

    CPC classification number: H01M8/0228 ,  H01M8/0206 ,  H01M8/0208 ,  H01M8/0213 ,  H01M8/0226 ,  H01M8/0232 ,  H01M8/1004 ,  Y02P70/56

    Abstract: A flow field plate for a fuel cell that has one or more outer layers that makes the plate more conductive and hydrophilic. In one embodiment, the coating is co-deposited as combination of a conductive material and a metal oxide coating. A suitable conductive material is gold and suitable metal oxides include SiO2, HfO2, ZrO2, Al2O3, SnO2, Ta2O5, Nb2O5, MoO2, IrO2, RuO2 and mixtures thereof. The conductive material and metal oxide can also be deposited as two separate layers, where the metal oxide is the outer layer. According to another embodiment, a metal layer is deposited on the plate with nanopores that provide the hydrophilicity. Also, doping ions can be added to the metal oxide to provide low fluoride solubility of the coating to control the rate that hydrofluoric acid etches away the oxide layer.

    Abstract translation: 一种用于燃料电池的流场板，其具有使得该板更具导电性和亲水性的一个或多个外层。 在一个实施方案中，涂层作为导电材料和金属氧化物涂层的组合共沉积。 合适的导电材料是金，合适的金属氧化物包括SiO 2，HfO 2，ZrO 2，Al 2 O 3，SnO 2，Ta 2 O 5，Nb 2 O 5，MoO 2，IrO 2，RuO 2及其混合物。 导电材料和金属氧化物也可以沉积成两个分开的层，其中金属氧化物是外层。 根据另一实施例，金属层被沉积​​在与提供亲水性纳米孔的板。 此外，掺杂的离子可以被加入到所述金属氧化物以提供该涂层的低氟溶解度来控制速率氢氟酸蚀刻掉氧化层。

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