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    Membrane electrode assembly for use in electrochemical devices
    1.
    发明授权
    Membrane electrode assembly for use in electrochemical devices 有权
    用于电化学装置的膜电极组件

    公开(公告)号：US08394551B2

    公开(公告)日：2013-03-12

    申请号：US10564794

    申请日：2004-07-14

    申请人： Ralf Zuber ,  Sandra Wittpahl ,  Klaus Schaack ,  Holger Dziallas ,  Peter Seipel ,  Günther Vulpius ,  Bernd Dillmann

    发明人： Ralf Zuber ,  Sandra Wittpahl ,  Klaus Schaack ,  Holger Dziallas ,  Peter Seipel ,  Günther Vulpius ,  Bernd Dillmann

    IPC分类号： H01M8/00

    CPC分类号： H01M8/1004 ,  C25B9/10 ,  H01M4/8626 ,  H01M4/8896 ,  H01M8/0247 ,  Y02E60/366 ,  Y02E60/523

    摘要： The invention relates to a membrane-electrode assembly (MEA) for electrochemical devices, in particular for membrane fuel cells. The membrane-electrode assembly has a semi-coextensive design and comprises an ion-conducting membrane, two catalyst layers and gas diffusion layers of differing sizes on the front side and rear side. The first gas diffusion layer has smaller planar dimensions than the ion-conducting membrane, while the second gas diffusion layer has essentially the same planar dimensions as the ion-conducting membrane. As a result, the ion-conducting membrane has a surface which is not supported by a gas diffusion layer on the front side.The membrane-electrode assembly has, owing to the particular construction, a stable structure which can be handled readily and displays advantages in the sealing of the reactive gases from one another and also in terms of the electrical properties. In particular, the hydrogen penetration current is significantly reduced.New processes for producing the MEA of the invention are described, in particular the method of heat pulse welding.The membrane-electrode assembly is used in PEM fuel cells, direct methanol fuel cells, electrolysers and other electrochemical devices.

    摘要翻译： 本发明涉及用于电化学装置的膜 - 电极组件（MEA），特别是用于膜式燃料电池。 膜 - 电极组件具有半共扩展设计，并且包括在前侧和后侧上具有不同尺寸的离子传导膜，两个催化剂层和气体扩散层。 第一气体扩散层具有比离子传导膜更小的平面尺寸，而第二气体扩散层具有与离子传导膜基本相同的平面尺寸。 结果，离子传导膜具有不在前侧的气体扩散层支撑的表面。 由于特殊的结构，膜 - 电极组件具有可以容易地处理的稳定的结构，并且在反应气体彼此密封以及电性能方面显示出优点。 特别地，氢穿透电流显着降低。 对本发明的MEA的制造新工艺进行了详细描述，特别是热脉冲焊接方法。 膜电极组件用于PEM燃料电池，直接甲醇燃料电池，电解槽和其他电化学装置。

    Membrane Electrode Assembly for Use in Electochmical Devices
    5.
    发明申请
    Membrane Electrode Assembly for Use in Electochmical Devices 有权
    用于电子设备的膜电极组件

    公开(公告)号：US20070215461A1

    公开(公告)日：2007-09-20

    申请号：US10564794

    申请日：2004-07-14

    申请人： Ralf Zuber ,  Sandra Wittpahl ,  Klaus Schaack ,  Holger Dziallas ,  Peter Seipel ,  Gunther Vulpius ,  Bernd Dillmann

    发明人： Ralf Zuber ,  Sandra Wittpahl ,  Klaus Schaack ,  Holger Dziallas ,  Peter Seipel ,  Gunther Vulpius ,  Bernd Dillmann

    IPC分类号： C25C7/02

    CPC分类号： H01M8/1004 ,  C25B9/10 ,  H01M4/8626 ,  H01M4/8896 ,  H01M8/0247 ,  Y02E60/366 ,  Y02E60/523

    摘要： The invention relates to a membrane-electrode assembly (MEA) for electrochemical devices, in particular for membrane fuel cells. The membrane-electrode assembly has a semi-coextensive design and comprises an ion-conducting membrane, two catalyst layers and gas diffusion layers of differing sizes on the front side and rear side. The first gas diffusion layer has smaller planar dimensions than the ion-conducting membrane, while the second gas diffusion layer has essentially the same planar dimensions as the ion-conducting membrane. As a result, the ion-conducting membrane has a surface which is not supported by a gas diffusion layer on the front side. The membrane-electrode assembly has, owing to the particular construction, a stable structure which can be handled readily and displays advantages in the sealing of the reactive gases from one another and also in terms of the electrical properties. In particular, the hydrogen penetration current is significantly reduced. New processes for producing the MEA of the invention are described, in particular the method of heat pulse welding. The membrane-electrode assembly is used in PEM fuel cells, direct methanol fuel cells, electrolysers and other electrochemical devices.

    摘要翻译： 本发明涉及用于电化学装置的膜 - 电极组件（MEA），特别是用于膜式燃料电池。 膜 - 电极组件具有半共扩展设计，并且包括在前侧和后侧上具有不同尺寸的离子传导膜，两个催化剂层和气体扩散层。 第一气体扩散层具有比离子传导膜更小的平面尺寸，而第二气体扩散层具有与离子传导膜基本相同的平面尺寸。 结果，离子传导膜具有不在前侧的气体扩散层支撑的表面。 由于特殊的结构，膜 - 电极组件具有可以容易地处理的稳定的结构，并且在反应气体彼此密封以及电性能方面显示出优点。 特别地，氢穿透电流显着降低。 对本发明的MEA的制造新工艺进行了详细描述，特别是热脉冲焊接方法。 膜电极组件用于PEM燃料电池，直接甲醇燃料电池，电解槽和其他电化学装置。

    Catalyst-coated ionomer membrane with protective film layer and membrane-electrode-assembly made thereof
    7.
    发明授权
    Catalyst-coated ionomer membrane with protective film layer and membrane-electrode-assembly made thereof 有权
    具有保护膜层的催化剂涂覆的离聚物膜和由其制成的膜 - 电极组件

    公开(公告)号：US08021796B2

    公开(公告)日：2011-09-20

    申请号：US10668559

    申请日：2003-09-22

    申请人： Ralf Zuber ,  Klaus Schaack ,  Sandra Wittpahl ,  Alexander Kabza ,  Markus Maier

    发明人： Ralf Zuber ,  Klaus Schaack ,  Sandra Wittpahl ,  Alexander Kabza ,  Markus Maier

    IPC分类号： H01M2/14 ,  H01M2/08 ,  H01M8/10 ,  H01M4/88 ,  B05D5/12

    CPC分类号： H01M8/0273 ,  H01M8/1004 ,  H01M8/242 ,  H01M2008/1095 ,  H01M2300/0082 ,  Y02E60/523 ,  Y02P70/56

    摘要： The present invention relates to the field of electrochemical cells and fuel cells, and more specifically to polymer-electrolyte-membrane fuel cells (PEMFC) and direct methanol fuel cells (DMFC). It is directed to catalyst-coated ionomer membranes (“CCMs”) and membrane-electrode-assemblies (“MEAs”) that contain one or more protective film layers for protection, sealing and better handling purposes. The one or more protective film layers are attached to the surface of said catalyst-coated membranes in such a way that they overlap with a region of the passive non-coated ionomer area, and with a region of the active area that is coated with a catalyst layer. Furthermore, the present invention discloses a process for manufacture of CCMs and MEAs that contain protective film layers. The materials may be used as components for the manufacture of low temperature fuel cell stacks.

    摘要翻译： 本发明涉及电化学电池和燃料电池领域，更具体地涉及聚合物 - 电解质膜燃料电池（PEMFC）和直接甲醇燃料电池（DMFC）。 它涉及含有一个或多个保护膜层的催化剂涂覆的离聚物膜（“CCM”）和膜电极组件（“MEA”），用于保护，密封和更好的处理目的。 一个或多个保护膜层以这样的方式附着在所述催化剂涂覆的膜的表面上，使得它们与被动未涂覆的离子交联聚合物区域的区域重叠，并且与涂覆有活性区域的区域 催化剂层。 此外，本发明公开了一种制造含有保护膜层的CCM和MEA的方法。 这些材料可以用作制造低温燃料电池堆的部件。

    Process for manufacturing a catalyst-coated ionomer membrane with protective film layer
    8.
    发明授权
    Process for manufacturing a catalyst-coated ionomer membrane with protective film layer 有权
    制备具有保护膜层的催化剂涂覆的离聚物膜的方法

    公开(公告)号：US08685200B2

    公开(公告)日：2014-04-01

    申请号：US13222666

    申请日：2011-08-31

    申请人： Ralf Zuber ,  Klaus Schaack ,  Sandra Wittpahl ,  Alexander Kabza ,  Markus Maier

    发明人： Ralf Zuber ,  Klaus Schaack ,  Sandra Wittpahl ,  Alexander Kabza ,  Markus Maier

    IPC分类号： B32B37/00 ,  B05D5/12 ,  H01M2/08 ,  H01M4/02

    CPC分类号： H01M8/0273 ,  H01M8/1004 ,  H01M8/242 ,  H01M2008/1095 ,  H01M2300/0082 ,  Y02E60/523 ,  Y02P70/56

    摘要： The present invention relates to the field of electrochemical cells and fuel cells, and more specifically to polymer-electrolyte-membrane fuel cells (PEMFC) and direct methanol fuel cells (DMFC). It is directed to catalyst-coated ionomer membranes (“CCMs”) and membrane-electrode-assemblies (“MEAs”) that contain one or more protective film layers for protection, sealing and better handling purposes. The one or more protective film layers are attached to the surface of said catalyst-coated membranes in such a way that they overlap with a region of the passive non-coated ionomer area, and with a region of the active area that is coated with a catalyst layer. Furthermore, the present invention discloses a process for manufacture of CCMs and MEAs that contain protective film layers. The materials may be used as components for the manufacture of low temperature fuel cell stacks.

    摘要翻译： 本发明涉及电化学电池和燃料电池领域，更具体地涉及聚合物 - 电解质膜燃料电池（PEMFC）和直接甲醇燃料电池（DMFC）。 它涉及含有一个或多个保护膜层的催化剂涂覆的离聚物膜（“CCM”）和膜电极组件（“MEA”），用于保护，密封和更好的处理目的。 一个或多个保护膜层以这样的方式附着到所述催化剂涂覆的膜的表面上，使得它们与被动未涂覆的离子交联聚合物区域的区域重叠，并且涂覆有活性区域的区域 催化剂层。 此外，本发明公开了一种制造含有保护膜层的CCM和MEA的方法。 这些材料可以用作制造低温燃料电池堆的部件。

    Membrane-Electrode Unit For Direct Methanol Fuel Cells (Dmfc)
    9.
    发明申请
    Membrane-Electrode Unit For Direct Methanol Fuel Cells (Dmfc) 有权
    直接甲醇燃料电池膜电极单元（Dmfc）

    公开(公告)号：US20070298312A1

    公开(公告)日：2007-12-27

    申请号：US11569461

    申请日：2005-05-25

    申请人： Joachim Koehler ,  Sandra Wittpahl ,  Holger Dziallas ,  Christian Eickes

    发明人： Joachim Koehler ,  Sandra Wittpahl ,  Holger Dziallas ,  Christian Eickes

    IPC分类号： H01M8/02

    CPC分类号： H01M8/04194 ,  H01M4/8605 ,  H01M8/04171 ,  H01M8/1011 ,  Y02E60/523

    摘要： The invention relates to a membrane electrode unit (MEU) for electrochemical apparatuses, in particular for direct methanol fuel cells (DMFC). The membrane electrode unit contains backings (i.e. gas diffusion layers) on the anode side and cathode side, which have a different water tightness (WT). The anode backing must have a lower water tightness (i.e. a higher water permeability) than the cathode backing, where WTAnode

    摘要翻译： 本发明涉及用于电化学装置的膜电极单元（MEU），特别是用于直接甲醇燃料电池（DMFC）。 膜电极单元包含在阳极侧和阴极侧上具有不同水密性（WT）的背衬（即气体扩散层）。 阳极背衬必须具有比阴极背衬更低的水密性（即更高的透水性），其中阳极阳极<阴极。 阳极背衬优选地不具有补偿层（微层），具有较低的防水剂含量（基于总重量为2至10重量％），并且具有比阴极背衬更高的总孔体积（VTot）。 所生产的膜电极单元在用甲醇水溶液操作的DMFC燃料电池中具有显着改进的性能。