公开(公告)号：US20150155567A1

公开(公告)日：2015-06-04

申请号：US14615577

申请日：2015-02-06

申请人： Daimler AG ,  Ford Motor Company

发明人： Hao Zhang ,  Herwig Haas ,  Sumit Kundu

IPC分类号： H01M4/86 ,  H01M4/88 ,  H01M4/92 ,  H01M8/18 ,  H01M8/10

CPC分类号： H01M4/8652 ,  H01M4/8825 ,  H01M4/921 ,  H01M4/925 ,  H01M8/186 ,  H01M2004/8684 ,  H01M2008/1095 ,  Y02E60/528

摘要： A membrane electrode assembly (MEA) for a fuel cell which exhibits enhanced reversal tolerance. In particular, a layer of iridium or an iridium compound, preferably metallic iridium or iridium oxide supported on TiO2, is provided on the anode to electrolyze available water and pass the majority of the current during a reversal of the fuel cell, thereby preventing damage to the MEA. The iridium or iridium compound is applied to an anode structure according to a predetermined pattern, with only part of the anode active area containing Ir. The parts of the MEA that do not contain Ir are not expected to suffer degradation from Ir cross-over, so that overall degradation of the cell will be diminished. Having less precious metals will also translate into less cost.

摘要翻译： 一种用于燃料电池的膜电极组件（MEA），其具有增强的反转公差。 特别地，在阳极上提供铱或铱化合物层，优选负载在TiO 2上的金属铱或氧化铱层，以电解可利用的水并在燃料电池的反转期间通过大部分电流，从而防止损坏 MEA。 铱或铱化合物根据预定图案施加到阳极结构，只有部分阳极活性区域含有Ir。 不包含Ir的MEA的部分预计不会受到Ir交叉的降解，从而细胞的整体降解将会降低。 拥有较少的贵金属也将减少成本。

公开(公告)号：US09263748B2

公开(公告)日：2016-02-16

申请号：US14615577

申请日：2015-02-06

申请人： Daimler AG ,  Ford Motor Company

发明人： Hao Zhang ,  Herwig Haas ,  Sumit Kundu

IPC分类号： H01M4/92 ,  H01M4/48 ,  H01M8/10 ,  H01M4/02 ,  H01M4/36 ,  H01M4/94 ,  H01M4/86 ,  H01M8/18 ,  H01M4/88

CPC分类号： H01M4/8652 ,  H01M4/8825 ,  H01M4/921 ,  H01M4/925 ,  H01M8/186 ,  H01M2004/8684 ,  H01M2008/1095 ,  Y02E60/528

摘要： A membrane electrode assembly (MEA) for a fuel cell which exhibits enhanced reversal tolerance. In particular, a layer of iridium or an iridium compound, preferably metallic iridium or iridium oxide supported on TiO2, is provided on the anode to electrolyze available water and pass the majority of the current during a reversal of the fuel cell, thereby preventing damage to the MEA. The iridium or iridium compound is applied to an anode structure according to a predetermined pattern, with only part of the anode active area containing Ir. The parts of the MEA that do not contain Ir are not expected to suffer degradation from Ir cross-over, so that overall degradation of the cell will be diminished. Having less precious metals will also translate into less cost.

摘要翻译： 一种用于燃料电池的膜电极组件（MEA），其具有增强的反转公差。 特别地，在阳极上提供铱或铱化合物层，优选负载在TiO 2上的金属铱或氧化铱层，以电解可利用的水并在燃料电池的反转期间通过大部分电流，从而防止对 MEA。 铱或铱化合物根据预定图案施加到阳极结构，只有部分阳极活性区域含有Ir。 不包含Ir的MEA的部分预计不会受到Ir交叉的降解，从而细胞的整体降解将会降低。 拥有较少的贵金属也将减少成本。

公开(公告)号：US20170309924A1

公开(公告)日：2017-10-26

申请号：US15649150

申请日：2017-07-13

申请人： Daimler AG ,  Ford Motor Company

发明人： Sumit Kundu ,  Scott McDermid ,  Amy Shun-Wen Yang ,  Liviu Catoiu ,  Darija Susac

IPC分类号： H01M4/92 ,  H01M8/1007 ,  H01M4/88

CPC分类号： H01M4/926 ,  H01M4/8828 ,  H01M4/92 ,  H01M4/923 ,  H01M4/925 ,  H01M8/1007

摘要： In solid polymer electrolyte fuel cells, an oxygen evolution reaction (OER) catalyst may be incorporated at the anode along with the primary hydrogen oxidation catalyst for purposes of tolerance to voltage reversal. Incorporating this OER catalyst in a layer at the interface between the anode's primary hydrogen oxidation anode catalyst and its gas diffusion layer can provide greatly improved tolerance to voltage reversal for a given amount of OER catalyst. Further, this improvement can be gained without sacrificing cell performance.