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    Catalyst layers to enhance uniformity of current density in membrane electrode assemblies
    1.
    发明授权
    Catalyst layers to enhance uniformity of current density in membrane electrode assemblies 有权
    催化剂层，以增强膜电极组件中电流密度的均匀性

    公开(公告)号：US08481185B2

    公开(公告)日：2013-07-09

    申请号：US12845894

    申请日：2010-07-29

    申请人： Susan M. Hendricks ,  Thomas Herdtle ,  Mark K. Debe ,  Donald J. McClure

    发明人： Susan M. Hendricks ,  Thomas Herdtle ,  Mark K. Debe ,  Donald J. McClure

    IPC分类号： H01M2/00

    CPC分类号： H01M4/8803 ,  H01M4/8636 ,  H01M4/8807 ,  H01M4/881 ,  H01M4/92 ,  H01M8/1004 ,  H01M2008/1095 ,  Y10T428/24355 ,  Y10T428/24372

    摘要： Components that include catalyst layers used in membrane electrode assemblies (MEAs), and methods of making such components are described. The catalyst layers yield more uniform current distributions across the active area of the MEA during operation. The catalyst layers may have a uniform catalyst activity profile of a less active catalyst to achieve more uniform current density over the MEA active area. The catalyst layers may have a variable activity profile, such as an activity profile with a varying slope, to compensate for the inherent nonlinearities of catalyst utilization during operation of an electrochemical fuel cell. Desired variable catalyst activity profiles may be achieved, for example, by varying the catalyst loading across the MEA from inlet to outlet ports or by varying the surface area of the catalyst loading or by varying the surface area of the catalyst support elements.

    摘要翻译： 描述了包括用于膜电极组件（MEA）中的催化剂层的组件以及制造这些组件的方法。 催化剂层在操作期间在MEA的有效区域上产生更均匀的电流分布。 催化剂层可以具有较低活性催化剂的均匀催化剂活性曲线，以在MEA活性区域上实现更均匀的电流密度。 催化剂层可以具有可变的活性分布，例如具有变化的斜率的活性分布，以补偿在电化学燃料电池操作期间催化剂利用的固有非线性。 期望的可变催化剂活性分布可以例如通过改变从入口到出口端口的MEA上的催化剂负载或通过改变催化剂负载的表面积或改变催化剂载体元素的表面积来实现。

    CATALYST LAYERS TO ENHANCE UNIFORMITY OF CURRENT DENSITY IN MEMBRANE ELECTRODE ASSEMBLIES
    2.
    发明申请
    CATALYST LAYERS TO ENHANCE UNIFORMITY OF CURRENT DENSITY IN MEMBRANE ELECTRODE ASSEMBLIES 有权
    催化层提高膜电极组件中电流密度的均匀性

    公开(公告)号：US20100297526A1

    公开(公告)日：2010-11-25

    申请号：US12845894

    申请日：2010-07-29

    申请人： Susan M. Hendricks ,  Thomas Herdtle ,  Mark K. Debe ,  Donald J. McClure

    发明人： Susan M. Hendricks ,  Thomas Herdtle ,  Mark K. Debe ,  Donald J. McClure

    IPC分类号： H01M8/10 ,  B01J35/10

    CPC分类号： H01M4/8803 ,  H01M4/8636 ,  H01M4/8807 ,  H01M4/881 ,  H01M4/92 ,  H01M8/1004 ,  H01M2008/1095 ,  Y10T428/24355 ,  Y10T428/24372

    摘要： Components that include catalyst layers used in membrane electrode assemblies (MEAs), and methods of making such components are described. The catalyst layers yield more uniform current distributions across the active area of the MEA during operation. The catalyst layers may have a uniform catalyst activity profile of a less active catalyst to achieve more uniform current density over the MEA active area. The catalyst layers may have a variable activity profile, such as an activity profile with a varying slope, to compensate for the inherent nonlinearities of catalyst utilization during operation of an electrochemical fuel cell. Desired variable catalyst activity profiles may be achieved, for example, by varying the catalyst loading across the MEA from inlet to outlet ports or by varying the surface area of the catalyst loading or by varying the surface area of the catalyst support elements.

    摘要翻译： 描述了包括用于膜电极组件（MEA）中的催化剂层的组件以及制造这些组件的方法。 催化剂层在操作期间在MEA的有效区域上产生更均匀的电流分布。 催化剂层可以具有较低活性催化剂的均匀催化剂活性曲线，以在MEA活性区域上实现更均匀的电流密度。 催化剂层可以具有可变的活性分布，例如具有变化的斜率的活性分布，以补偿在电化学燃料电池操作期间催化剂利用的固有非线性。 期望的可变催化剂活性分布可以例如通过改变从入口到出口端口的MEA上的催化剂负载或通过改变催化剂负载的表面积或改变催化剂载体元素的表面积来实现。

    Catalyst layers to enhance uniformity of current density in membrane electrode assemblies
    3.
    发明授权
    Catalyst layers to enhance uniformity of current density in membrane electrode assemblies 有权
    催化剂层，以增强膜电极组件中电流密度的均匀性

    公开(公告)号：US07790304B2

    公开(公告)日：2010-09-07

    申请号：US11224890

    申请日：2005-09-13

    申请人： Susan M. Hendricks ,  Thomas Herdtle ,  Mark K. Debe ,  Donald J. McClure

    发明人： Susan M. Hendricks ,  Thomas Herdtle ,  Mark K. Debe ,  Donald J. McClure

    IPC分类号： H01M2/00

    CPC分类号： H01M4/8803 ,  H01M4/8636 ,  H01M4/8807 ,  H01M4/881 ,  H01M4/92 ,  H01M8/1004 ,  H01M2008/1095 ,  Y10T428/24355 ,  Y10T428/24372

    摘要： Components that include catalyst layers used in membrane electrode assemblies (MEAs), and methods of making such components are described. The catalyst layers yield more uniform current distributions across the active area of the MEA during operation. The catalyst layers may have a uniform catalyst activity profile of a less active catalyst to achieve more uniform current density over the MEA active area. The catalyst layers may have a variable activity profile, such as an activity profile with a varying slope, to compensate for the inherent nonlinearities of catalyst utilization during operation of an electrochemical fuel cell. Desired variable catalyst activity profiles may be achieved, for example, by varying the catalyst loading across the MEA from inlet to outlet ports or by varying the surface area of the catalyst loading or by varying the surface area of the catalyst support elements.

    摘要翻译： 描述了包括用于膜电极组件（MEA）中的催化剂层的组件以及制造这些组件的方法。 催化剂层在操作期间在MEA的有效区域上产生更均匀的电流分布。 催化剂层可以具有较低活性催化剂的均匀催化剂活性曲线，以在MEA活性区域上实现更均匀的电流密度。 催化剂层可以具有可变的活性分布，例如具有变化的斜率的活性分布，以补偿在电化学燃料电池操作期间催化剂利用的固有非线性。 期望的可变催化剂活性分布可以例如通过改变从入口到出口端口的MEA上的催化剂负载或通过改变催化剂负载的表面积或改变催化剂载体元素的表面积来实现。

    Fuel cell stack
    10.
    发明授权
    Fuel cell stack 有权
    燃料电池堆

    公开(公告)号：US07163761B2

    公开(公告)日：2007-01-16

    申请号：US10294224

    申请日：2002-11-14

    申请人： Mark Kevitt Debe ,  Larry Allan Schleif ,  Thomas Herdtle ,  Andrew James Steinbach

    发明人： Mark Kevitt Debe ,  Larry Allan Schleif ,  Thomas Herdtle ,  Andrew James Steinbach

    IPC分类号： H01M8/02 ,  H01M8/24

    CPC分类号： H01M8/248 ,  H01M8/0206 ,  H01M8/0267 ,  H01M8/0297 ,  H01M8/04007 ,  H01M8/242 ,  H01M8/2465 ,  H01M2008/1095

    摘要： A fuel cell stack is provided comprising fuel cell modules least compression plates; and at least one plurality of mechanical linkages connecting a pair of compression plates located on either side of at least one fuel cell module, which may be engaged to maintain a predetermined gap distance between the pair of compression plates. The present invention additionally provides a fuel cell stack comprising: fuel cell modules stacked alternately with compression plates; mechanical linkages connecting a first pair of compression plates directly adjacent to a first fuel cell module; mechanical linkages connecting a second pair of compression plates directly adjacent to a second fuel cell module; where a) the first and second fuel cell modules may be maintained under compression, and b) the compression on each fuel cell module may be adjusted essentially independently of the compression on the other.

    摘要翻译： 提供燃料电池堆，其包括最小压缩板的燃料电池模块; 以及连接位于至少一个燃料电池模块的任一侧上的一对压缩板的至少多个机械连杆，其可被接合以保持所述一对压缩板之间的预定的间隙距离。 本发明另外提供了一种燃料电池堆，其包括：与压缩板交替堆叠的燃料电池模块; 连接第一对直接与第一燃料电池模块相邻的压缩板的机械连杆; 连接第二对直接与第二燃料电池模块相邻的压缩板的机械连杆; 其中a）第一和第二燃料电池模块可以被保持在压缩下，以及b）每个燃料电池模块上的压缩可以基本上独立于压缩而被调节。