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1. 发明授权

US07638225B2 Cathode for a direct methanol fuel cell and method for operating the same 失效
标题翻译：直接甲醇燃料电池的阴极及其操作方法
公开(公告)号：US07638225B2
公开(公告)日：2009-12-29
申请号：US10553574
申请日：2004-04-08
申请人： Hendrik Dohle , Martin Müller , Jan Bringmann , Jürgen Mergel , Detlef Stolten
发明人： Hendrik Dohle , Martin Müller , Jan Bringmann , Jürgen Mergel , Detlef Stolten
IPC分类号： H01M4/00 , H01M8/00
CPC分类号： H01M4/8605 , H01M8/04156 , H01M8/1004 , H01M8/1009 , H01M2004/8689 , Y02E60/523
摘要： In low-temperature fuel cells according to prior art, the problem often arises that the diffusion layer of the cathode is filled by water which is permeated or produced on the cathode, such that oxygen can no longer be transported to the catalyst layer of the cathode in a frictionless manner. As a result, said fuel cells are regularly used with a high excess of oxygen in order to reduce the cited transport problems for the oxygen. The inventive fuel cell enables said problem to be solved in that the arrangement of the diffusion layer and the catalyst layer of the cathode is inverted. The diffusion layer, which is embodied in such a way as to also conduct ions, is directly adjacent to the electrolyte membrane. The catalyst layer oriented towards the free cathode space can advantageously directly react with the supplied oxygen without further transport problems. A further advantage lies in the fact that the water produced on the catalyst layer of the cathode and/or permeated by the electrolyte membrane and the diffusion layer can be easily withdrawn via the free cathode space.
摘要翻译：在根据现有技术的低温燃料电池中，经常出现的问题是阴极的扩散层被在阴极上渗透或产生的水填充，使得氧不再能够传输到阴极的催化剂层以无摩擦的方式。结果，所述燃料电池常规地使用大量的氧气，以便减少所引用的氧气运输问题。本发明的燃料电池能够解决这个问题，即扩散层和阴极的催化剂层的布置被反转。以能够进行离子的方式实施的扩散层与电解质膜直接相邻。朝向自由阴极空间取向的催化剂层可以有利地直接与供应的氧气反应，而不会有进一步的运输问题。另一个优点在于，可以通过自由阴极空间容易地排出在阴极的催化剂层上产生的和/或被电解质膜和扩散层渗透的水。

2. 发明授权

US08603685B2 Method for electrochemical activation of fuel cells 失效
标题翻译：燃料电池电化学活化方法
公开(公告)号：US08603685B2
公开(公告)日：2013-12-10
申请号：US12520060
申请日：2007-12-05
申请人： Klaus Wippermann , Heinz Schmitz , Jürgen Mergel , Andrei Kulikovsky , Dirk Uwe Sauer , Birger Fricke , Tilman Sanders
发明人： Klaus Wippermann , Heinz Schmitz , Jürgen Mergel , Andrei Kulikovsky , Dirk Uwe Sauer , Birger Fricke , Tilman Sanders
IPC分类号： H01M8/18
CPC分类号： H01M8/04238 , H01M8/1011 , H01M8/186 , Y02E60/523 , Y02E60/528
摘要： There is provided a method for the activation of a fuel cell. An exemplary method comprises operating the fuel cell entirely or partially at least briefly in an electrolysis regimen during galvanic operation.
摘要翻译：提供了一种用于激活燃料电池的方法。一种示例性的方法包括在电动操作期间在电解方案中至少简单地操作燃料电池。

3. 发明授权

US07183015B2 Fuel cell stack with circuit 失效
标题翻译：带电路的燃料电池堆
公开(公告)号：US07183015B2
公开(公告)日：2007-02-27
申请号：US10432183
申请日：2001-11-06
申请人： Detlef Stolten , Hendrik Dohle , Jürgen Mergel , Helmut Baltruschat
发明人： Detlef Stolten , Hendrik Dohle , Jürgen Mergel , Helmut Baltruschat
IPC分类号： H01M8/00 , H01M8/04
CPC分类号： H01M8/06 , H01M8/04186
摘要： In a direct-methanol fuel cell stack with an at least partial circulation (7, 9) of the fuel, according to the invention a means is arranged in this circulation for reducing the concentration of an undesired byproduct. This means is comprised especially of a further electrochemical cell (8) to which electric current is applied and which at least partly transforms the byproducts by an electrochemical reduction reaction again to methanol and water. Since the concentration of byproducts is small, the loss in electric current required for the additional reduction reaction has no noticeable effect on the efficiency of the fuel cell stack.
摘要翻译：在具有至少部分循环（7,9）的燃料的直接甲醇燃料电池堆中，根据本发明，在该循环中布置了一种用于降低不希望的副产物浓度的装置。这意味着特别包括进一步施加电流的电化学电池（8），并且通过电化学还原反应至少部分地将副产物转化成甲醇和水。由于副产物的浓度小，因此附加还原反应所需的电流损失对燃料电池堆的效率没有明显的影响。

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