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    Approach to make a high performance membrane electrode assembly (MEA) for a PEM fuel cell
    31.
    发明授权
    Approach to make a high performance membrane electrode assembly (MEA) for a PEM fuel cell 有权
    制造用于PEM燃料电池的高性能膜电极组件（MEA）的方法

    公开(公告)号：US08101319B2

    公开(公告)日：2012-01-24

    申请号：US10850550

    申请日：2004-05-20

    申请人： Youssef M Mikhail ,  Gayatri Vyas

    发明人： Youssef M Mikhail ,  Gayatri Vyas

    IPC分类号： H01M2/14 ,  H01M8/04 ,  H01M8/10 ,  H01M8/02 ,  B32B3/26

    CPC分类号： H01M8/0232 ,  H01M8/0234 ,  H01M8/0245 ,  Y10T428/249986 ,  Y10T428/24999

    摘要： An electrically conductive fluid distribution element for use in a fuel cell having a conductive non-metallic porous media having a surface with an electrically conductive metal deposited along one or more metallized regions. The metallized regions are arranged to contact a membrane electrode assembly (MEA) in a fuel cell assembly, and thus improve electrical conductance at contact regions between the MEA and the fluid distribution media. Methods of making such a fluid distribution element and operating fuel cell assemblies are also provided.

    摘要翻译： 一种用于具有导电非金属多孔介质的燃料电池的导电流体分配元件，其具有沿着一个或多个金属化区域沉积的具有导电金属的表面。 金属化区域布置成接触燃料电池组件中的膜电极组件（MEA），从而改善MEA和流体分布介质之间的接触区域处的电导率。 还提供了制造这种流体分配元件和操作燃料电池组件的方法。

    Electrode and membrane-electrode assemblies for electrochemical cells
    32.
    发明授权
    Electrode and membrane-electrode assemblies for electrochemical cells 有权
    用于电化学电池的电极和膜 - 电极组件

    公开(公告)号：US06521381B1

    公开(公告)日：2003-02-18

    申请号：US09268827

    申请日：1999-03-16

    申请人： Gayatri Vyas ,  Swathy Swathirajan ,  Yang T. Cheng ,  Youssef M. Mikhail

    发明人： Gayatri Vyas ,  Swathy Swathirajan ,  Yang T. Cheng ,  Youssef M. Mikhail

    IPC分类号： H01M462

    CPC分类号： H01M4/8885 ,  H01M8/1004 ,  Y02P70/56 ,  Y10T29/49115

    摘要： An electrode structure for an electrochemical cell is formed by forming a mixture comprising proton-conductive material and carbon particles, applying the mixture to a current collector sheet to form a film, and dispersing a catalyst in the form of metallic polycrystals in a thin layer on the exposed surface of the film. This method produces an electrode having significantly increased catalyst utilization, dramatic reduction of catalyst loading, and which is consequently less expensive to produce than electrodes produced by prior art methods. A combination electrolyte and electrode structure for an electrochemical cell is produced by hot-pressing an electrode of the above-described composition into contact with a proton-conductive polymer electrolyte membrane.

    摘要翻译： 通过形成包含质子传导材料和碳颗粒的混合物形成用于电化学电池的电极结构，将该混合物施加到集电体片以形成膜，并将金属多晶体形式的催化剂分散在薄层上 膜的暴露表面。 该方法产生具有显着增加的催化剂利用率，催化剂负载显着降低的电极，因此与通过现有技术方法制备的电极相比，制造成本更低。 通过将上述组合物的电极热压到与质子传导性聚合物电解质膜接触来制造用于电化学电池的组合电解质和电极结构。

    Method to make conductive hydrophilic fuel cell elements
    37.
    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

    申请人： Gayatri Vyas ,  Thomas A. Trabold ,  Stephen William Gaarenstroom

    发明人： Gayatri Vyas ,  Thomas A. Trabold ,  Stephen William Gaarenstroom

    IPC分类号： H01M8/04 ,  H01M4/66

    CPC分类号： H01M8/0228 ,  H01M8/0206 ,  H01M8/0208 ,  H01M8/0213 ,  H01M8/0226 ,  H01M8/0232 ,  H01M8/1004 ,  Y02P70/56

    摘要： 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.

    摘要翻译： 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。

    Hydrophilic fuel cell bipolar plate having a plasma induced polymerization coating
    39.
    发明授权
    Hydrophilic fuel cell bipolar plate having a plasma induced polymerization coating 有权
    具有等离子体诱导聚合涂层的亲水燃料电池双极板

    公开(公告)号：US07622211B2

    公开(公告)日：2009-11-24

    申请号：US11141905

    申请日：2005-06-01

    申请人： Gayatri Vyas ,  Tao Xie ,  Thomas A. Trabold

    发明人： Gayatri Vyas ,  Tao Xie ,  Thomas A. Trabold

    IPC分类号： H01M2/02 ,  B05D5/12

    CPC分类号： H01M8/0228 ,  H01M8/0213 ,  H01M8/0221 ,  H01M8/0226 ,  H01M8/04171 ,  H01M2008/1095 ,  Y02P70/56

    摘要： A fuel cell electrically conductive element is provided with a polymeric surface comprising a flow field, at least a part of the flow field having a grafted, permanently hydrophilic, polymer coating. The element is made by applying a layer of a monomer mixture of a hydrophilic, ethylenically-unsaturated monomer and a crosslinking monomer to the electrically conductive element surface and polymerizing the applied monomer mixture layer with a plasma whereby the polymerized layer is grafted to the polymeric surface.

    摘要翻译： 燃料电池导电元件设置有包括流场的聚合物表面，所述流场的至少一部分具有接枝的永久亲水的聚合物涂层。 该元件通过将一层亲水性，烯属不饱和单体和交联单体的单体混合物施加到导电元件表面上并用等离子体聚合所施加的单体混合物层，从而将聚合层接枝到聚合物表面 。