公开(公告)号：US20090053583A1

公开(公告)日：2009-02-26

申请号：US11813336

申请日：2006-01-11

申请人： Matthias Binder ,  Joachim Koehler ,  Sandra Wittpahl ,  Claus-Rupert Hohenthanner ,  Michael Lennartz

发明人： Matthias Binder ,  Joachim Koehler ,  Sandra Wittpahl ,  Claus-Rupert Hohenthanner ,  Michael Lennartz

IPC分类号： H01M4/96 ,  G01N27/403 ,  B23H3/04 ,  B32B38/10

CPC分类号： H01M8/1004 ,  H01M4/8807 ,  H01M4/8814 ,  H01M4/8828 ,  H01M4/8882 ,  H01M4/92

摘要： The invention describes a process for producing a gas diffusion electrode which has a catalyst layer having a smooth surface, wherein the smooth surface of the catalyst layer is produced by bringing the catalyst layer in the moist state into contact with a transfer film and removing this transfer film after drying. In variant A, the catalyst layer is firstly produced on a transfer film and then transferred in the moist state to the gas diffusion layer. In variant B, the catalyst layer is applied to the gas diffusion layer, and a transfer film is then placed on top. In both cases, the structure produced in this way is subsequently dried. Before further processing, the transfer film is removed to give a gas diffusion electrode having a smooth catalyst surface which has a maximum profile peak height (Rp) of less than 25 microns. The electrodes are used for producing membrane-electrode assemblies for membrane fuel cells or other electrochemical devices. Membrane-electrode assemblies comprising the gas diffusion electrodes of the invention display very good long-term behaviour.

摘要翻译： 本发明描述了一种制备具有光滑表面的催化剂层的气体扩散电极的方法，其中催化剂层的平滑表面是通过使处于潮湿状态的催化剂层与转移膜接触并除去该转移而产生的 干燥后胶片。 在变型A中，催化剂层首先在转移膜上产生，然后在潮湿状态下转移到气体扩散层。 在变型B中，将催化剂层施加到气体扩散层，然后将转印膜放置在顶部。 在这两种情况下，以这种方式生产的结构随后被干燥。 在进一步处理之前，去除转移膜，得到具有平滑催化剂表面的气体扩散电极，其具有小于25微米的最大轮廓峰高（Rp）。 电极用于生产膜燃料电池或其他电化学装置的膜 - 电极组件。 包括本发明的气体扩散电极的膜 - 电极组件显示出非常好的长期行为。

公开(公告)号：US20070248846A1

公开(公告)日：2007-10-25

申请号：US11661558

申请日：2005-08-27

申请人： Claus-Rupert Hohenthanner ,  Marco Lopez ,  Joachim Koehler

发明人： Claus-Rupert Hohenthanner ,  Marco Lopez ,  Joachim Koehler

IPC分类号： H01M8/00 ,  B05D5/12

CPC分类号： H01M4/8807 ,  H01M4/8828 ,  H01M4/8882 ,  H01M4/8896 ,  H01M4/92 ,  H01M8/0234 ,  H01M8/1004 ,  H01M8/1011 ,  H01M8/1016 ,  H01M2008/1095 ,  Y02E60/523 ,  Y02P70/56 ,  Y10T29/49002

摘要： The invention relates to a process for producing a five-layer membrane-electrode unit comprising an ionomer membrane, a first catalyst layer, a second catalyst layer, a first gas diffusion layer and a second gas diffusion layer. In the process of the invention, at least one gas diffusion layer is provided with a suitable perforation grid before or after coating with the catalyst. The excess gas diffusion material is removed as pressed screen after lamination of the gas diffusion layer onto the membrane, exposing the uncoated membrane areas. The process is suitable for the continuous production of five-layer membrane-electrode units of type 1 (in which the membrane forms a rim projecting beyond the two gas diffusion layers) and of type 3 (in which gas diffusion layers and membrane have a step-like, semicoextensive design). Two process variants in which dried and undried (i.e. solvent-containing) catalyst layers are laminated onto the membrane are described. The five-layer membrane-electrode units produced are used in electrochemical devices such as PEM fuel cells, direct methanol fuel cells (DMFCs) or electrolysers.

摘要翻译： 本发明涉及一种生产包含离聚物膜，第一催化剂层，第二催化剂层，第一气体扩散层和第二气体扩散层的五层膜 - 电极单元的方法。 在本发明的方法中，在涂覆催化剂之前或之后，至少一个气体扩散层具有合适的穿孔网格。 在将气体扩散层层压到膜上之后，将过量的气体扩散材料作为压制筛除去，暴露未涂覆的膜区域。 该方法适用于连续生产1型（其中膜形成突出超过两个气体扩散层的边缘）和3型（其中气体扩散层和膜具有步骤）的五层膜 - 电极单元 类似，semicoextensive设计）。 描述了其中干燥和未干燥（即含溶剂的）催化剂层层压到膜上的两种方法变体。 所生产的五层膜 - 电极单元用于电化学装置，例如PEM燃料电池，直接甲醇燃料电池（DMFC）或电解槽。

公开(公告)号：US20070077350A1

公开(公告)日：2007-04-05

申请号：US10562994

申请日：2004-06-24

申请人： Claus-Rupert Hohenthanner ,  Heike Kuhnhold ,  Bernhardt Barth ,  Peter Seipel

发明人： Claus-Rupert Hohenthanner ,  Heike Kuhnhold ,  Bernhardt Barth ,  Peter Seipel

IPC分类号： B05D5/12 ,  H01M8/10 ,  H01M4/86

CPC分类号： H01M4/881 ,  H01M4/8814 ,  H01M4/8828 ,  H01M8/1023 ,  H01M8/1025 ,  H01M8/1027 ,  H01M8/103 ,  H01M8/1032 ,  H01M8/1039 ,  H01M8/1067 ,  H01M8/1097 ,  Y02E60/523 ,  Y02P70/56

摘要： The present invention relates to a process for manufacture of a catalyst-coated polymer electrolyte membrane (CCM) for electrochemical devices. The process is characterized in that a polymer electrolyte membrane is used which is supported on its backside to a first supporting foil. After coating of the front side, a second supporting foil is applied to the front side, the first supporting foil is removed and subsequently the second catalyst layer is applied to the back side. In this process, the membrane is in contact with at least one supporting foil during all processing steps. Smooth, wrinkle-free catalyst-coated membranes are obtained in a continuous process with high production speed. The 3-layer catalyst-coated membranes (CCMs) are used in electrochemical devices, such as PEM fuel cells, direct methanol fuel cells (DMFC), sensors or electrolyzers.

摘要翻译： 本发明涉及用于电化学装置的催化剂涂覆的聚合物电解质膜（CCM）的制造方法。 该方法的特征在于使用其背面支撑在第一支撑箔上的聚合物电解质膜。 在涂覆前侧之后，将第二支撑箔施加到前侧，移除第一支撑箔，随后将第二催化剂层施加到背面。 在该过程中，膜在所有处理步骤期间与至少一个支撑箔接触。 平滑，无皱纹的催化剂涂层膜以连续的方法获得，生产速度高。 三层催化剂涂覆膜（CCM）用于电化学装置，如PEM燃料电池，直接甲醇燃料电池（DMFC），传感器或电解槽。