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    VARIABLE CATALYST LOADING BASED ON FLOW FIELD GEOMETRY
    4.
    发明申请
    VARIABLE CATALYST LOADING BASED ON FLOW FIELD GEOMETRY 有权
    基于流场几何的可变催化剂装载

    公开(公告)号：US20100330458A1

    公开(公告)日：2010-12-30

    申请号：US12860491

    申请日：2010-08-20

    申请人： Robert L. Fuss ,  Bhaskar Sompalli

    发明人： Robert L. Fuss ,  Bhaskar Sompalli

    IPC分类号： H01M8/04

    CPC分类号： H01M8/1004 ,  H01M4/8605 ,  H01M4/8642 ,  H01M4/921

    摘要： A fuel cell including a membrane electrode assembly composed of a ionically conductive member sandwiched between a pair of electrodes. At least one of the electrodes including a catalyst loading characterized by catalytic activity that varies in proportion to the catalyst loading. Moreover, the fuel cell includes a flow path for supplying gaseous reactants to the electrodes and the catalyst loading is varied according to the flow path geometry.

    摘要翻译： 一种燃料电池，包括由夹在一对电极之间的离子导电构件构成的膜电极组件。 电极中的至少一个包括催化剂负载，其特征在于催化活性与催化剂负载成比例地变化。 此外，燃料电池包括用于向电极供应气态反应物的流动路径，并且催化剂负载根据流路几何形状而变化。

    Diffusion media, fuel cells, and fuel cell powered systems
    5.
    发明授权
    Diffusion media, fuel cells, and fuel cell powered systems 有权
    扩散介质，燃料电池和燃料电池供电系统

    公开(公告)号：US07303835B2

    公开(公告)日：2007-12-04

    申请号：US10685346

    申请日：2003-10-14

    申请人： Mark F. Mathias ,  Joerg Roth ,  Bhaskar Sompalli ,  Michael Schoeneweiss ,  David Wood

    发明人： Mark F. Mathias ,  Joerg Roth ,  Bhaskar Sompalli ,  Michael Schoeneweiss ,  David Wood

    IPC分类号： H01M4/00 ,  H01M8/10 ,  H01M2/14

    CPC分类号： H01M8/0234 ,  H01M4/8605 ,  H01M8/1007

    摘要： A porous diffusion media according to the present invention is positioned against a catalyst layer of the membrane electrode assembly, the porous matrix comprises carbon paper, and the water transfer particles comprise carbon fibers or powders. Relatively high and relatively low water transfer particle density regions alternate across the porous diffusion media. A first major face of the media may be collectively more hydrophilic than the second major face and the second major face may be collectively more hydrophobic than the first major face. The diffusion media is positioned against the catalyst layer along the first major face of the diffusion media and against a flow field of the fuel cell along the second major face of the diffusion media. The porous diffusion media comprises hydrophobic material disposed along the second major face of the diffusion media.

    摘要翻译： 根据本发明的多孔扩散介质位于膜电极组件的催化剂层上，多孔基质包括碳纸，并且水转移颗粒包含碳纤维或粉末。 相对高且相对较低的水转移颗粒密度区域跨多孔扩散介质交替。 介质的第一主面可以集中地比第二主面更亲水，而第二主面可以集体地比第一主面更疏水。 扩散介质沿着扩散介质的第一主面靠着催化剂层定位，并且沿着扩散介质的第二主面对着燃料电池的流场。 多孔扩散介质包括沿扩散介质的第二主面设置的疏水材料。

    Control parameters for optimizing MEA performance
    6.
    发明申请
    Control parameters for optimizing MEA performance 审中-公开
    用于优化MEA性能的控制参数

    公开(公告)号：US20060204831A1

    公开(公告)日：2006-09-14

    申请号：US11434326

    申请日：2006-05-15

    申请人： Susan Yan ,  John Doyle ,  Bhaskar Sompalli ,  Hubert Gasteiger ,  Jeanette O'Hara ,  Wenbin Gu

    发明人： Susan Yan ,  John Doyle ,  Bhaskar Sompalli ,  Hubert Gasteiger ,  Jeanette O'Hara ,  Wenbin Gu

    IPC分类号： H01M4/86 ,  H01M4/96 ,  H01M4/94 ,  B05D5/12 ,  H01M4/88

    CPC分类号： H01M4/8642 ,  H01M4/0407 ,  H01M4/881 ,  H01M4/8817 ,  H01M4/8825 ,  H01M4/8828 ,  H01M4/886 ,  H01M4/8882 ,  H01M2008/1095

    摘要： A gradient of ionomeric material is generated, disposed, or otherwise provided in an electrode suitable for use in a fuel cell. The ionomer concentration, e.g., with respect to the carbon content of the catalyst layer (e.g., expressed as a ratio), is greatest in the area closest to the membrane, e.g., of the fuel cell (e.g., the membrane side), and is decreased in the area furthest from the membrane (e.g., the gas side). By way of another non-limiting example, the ionomer gradient can be formed such that the concentration (or the ratio if expressed in relation to the carbon content of the catalyst layer) can gradually, as opposed to rapidly, decrease as the distance away from the membrane increases.

    摘要翻译： 在适合用于燃料电池的电极中产生，设置或以其他方式提供离聚物材料的梯度。 离子聚合物浓度，例如相对于催化剂层的碳含量（例如，以比例表示）在最接近膜的区域（例如，燃料电池（例如，膜侧））中最大，以及 在离膜最远的区域（例如气体侧）下降。 作为另一非限制性实例，可以形成离子键梯度，使得浓度（或相对于催化剂层的碳含量表示的比例）可以逐渐减少，而不是快速地随着离开的距离而减小 膜增加。

    Variable catalyst loading based on flow field geometry
    7.
    发明授权
    Variable catalyst loading based on flow field geometry 有权
    基于流场几何形状的可变催化剂负载

    公开(公告)号：US08227124B2

    公开(公告)日：2012-07-24

    申请号：US13030469

    申请日：2011-02-18

    申请人： Robert L. Fuss ,  Bhaskar Sompalli

    发明人： Robert L. Fuss ,  Bhaskar Sompalli

    IPC分类号： H01M8/04

    CPC分类号： H01M8/1004 ,  H01M4/8605 ,  H01M4/8642 ,  H01M4/921

    摘要： A fuel cell including a membrane electrode assembly composed of a ionically conductive member sandwiched between a pair of electrodes. At least one of the electrodes including a catalyst loading characterized by catalytic activity that varies in proportion to the catalyst loading. Moreover, the fuel cell includes a flow path for supplying gaseous reactants to the electrodes and the catalyst loading is varied according to the flow path geometry.

    摘要翻译： 一种燃料电池，包括由夹在一对电极之间的离子导电构件构成的膜电极组件。 电极中的至少一个包括催化剂负载，其特征在于催化活性与催化剂负载成比例地变化。 此外，燃料电池包括用于向电极供应气态反应物的流动路径，并且催化剂负载根据流路几何形状而变化。

    COMPRESSION OF DIRECT METHANOL FUEL CELL STACKS WITH CATALYST COATED MEMBRANES AND MEMBRANE ELECTRODE ASSEMBLY
    8.
    发明申请
    COMPRESSION OF DIRECT METHANOL FUEL CELL STACKS WITH CATALYST COATED MEMBRANES AND MEMBRANE ELECTRODE ASSEMBLY 审中-公开
    直接甲醇燃料电池堆叠与催化涂层膜和膜电极组件的压缩

    公开(公告)号：US20120009493A1

    公开(公告)日：2012-01-12

    申请号：US13178667

    申请日：2011-07-08

    申请人： Bhaskar Sompalli ,  Paul Knauer ,  Derek Kwok

    发明人： Bhaskar Sompalli ,  Paul Knauer ,  Derek Kwok

    IPC分类号： H01M8/04 ,  H01M8/10 ,  H01M2/08

    CPC分类号： H01M8/0276 ,  H01M8/0258 ,  H01M8/1011 ,  H01M8/241 ,  H01M8/248 ,  Y02E60/523

    摘要： An apparatus to control a swelling of a catalyst coated membrane in a fuel cell includes an insulator layer provided at a perimeter of the fuel cell. The insulator layer has a plurality of insulator films and is secured to a flow field plate. The insulator layer has a less compressibility relative to a gasket used in the fuel cell. A method for controlling a swelling of a catalyst coated membrane in a fuel cell includes providing an insulator layer at a perimeter of each of fuel cells in a fuel cell stack. The fuel cell stack is compressed for a predetermined duration when the catalyst coated membrane is in a substantially dry state. Passage of fuel is allowed inside the fuel cell thereby facilitating the catalyst coated membrane to swell. A swollen catalyst coated membrane is allowed to contact the insulator layer.

    摘要翻译： 控制燃料电池中的催化剂涂覆的膜的膨胀的装置包括设置在燃料电池的周边的绝缘体层。 绝缘体层具有多个绝缘膜，并固定在流场板上。 绝缘体层相对于在燃料电池中使用的垫圈具有较小的压缩性。 用于控制燃料电池中的催化剂涂覆的膜的膨胀的方法包括在燃料电池堆中的每个燃料电池的周边设置绝缘体层。 当催化剂涂覆的膜处于基本干燥状态时，燃料电池堆被压缩预定的持续时间。 允许在燃料电池内通过燃料，从而便于催化剂涂覆的膜膨胀。 允许溶胀的催化剂涂覆的膜接触绝缘体层。