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公开(公告)号：US20120064423A1
公开(公告)日：2012-03-15
申请号：US13107526
申请日：2011-05-13
IPC分类号： H01M8/04
CPC分类号： H01M8/04559 , H01M4/92 , H01M8/0432 , H01M8/04529 , Y02E60/50
摘要： A system and method for determining a maximum average cell voltage set-point for fuel cells in a fuel cell stack that considers oxidation of the catalyst in the fuel cells. The method includes determining the average cell voltage, the stack current density (I) and an internal resistance (R) of membranes in the fuel cells to calculate an IR corrected average cell voltage. The IR corrected average cell voltage is then used to determine the oxidation state of the catalyst particles using, for example, an empirical model. The oxidation state of the particles is then used to calculate the maximum average cell voltage set-point of the fuel cells, which is used to set the minimum power requested from the fuel cell stack.
摘要翻译： 一种用于确定燃料电池堆中的燃料电池的最大平均电池电压设定点的系统和方法，其考虑了燃料电池中的催化剂的氧化。 该方法包括确定燃料电池中的平均电池电压，堆电流密度（I）和膜的内阻（R），以计算IR校正的平均电池电压。 然后使用IR校正的平均电池电压来使用例如经验模型来确定催化剂颗粒的氧化态。 然后使用颗粒的氧化态来计算燃料电池的最大平均电池电压设定点，其用于设定从燃料电池堆所要求的最小功率。
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2.发明授权Catalyst layer edge protection for enhanced MEA durability in PEM fuel cells 有权催化剂层边缘保护，以提高PEM燃料电池中的MEA耐久性公开(公告)号：US07713644B2
公开(公告)日：2010-05-11
申请号：US10903912
申请日：2004-07-30
IPC分类号： H01M4/86
CPC分类号： H01M8/1004 , H01M4/8605 , H01M4/8642 , H01M4/881 , H01M4/8857 , H01M4/92 , H01M8/0273 , H01M8/247
摘要： A membrane electrode assembly comprising an ionically conductive member and an electrode, wherein the electrode is a smooth, continuous layer that completely covers and supports the ionically conductive member. The electrode further comprises a central region and a peripheral region, wherein a gradient of electrochemically active material exists between the central region and the peripheral region such that a content of the electrochemically active material is greater in the central region than the peripheral region.
摘要翻译： 一种膜电极组件，其包括离子导电构件和电极，其中所述电极是完全覆盖和支撑所述离子导电构件的光滑的连续层。 电极还包括中心区域和外围区域，其中在中心区域和外围区域之间存在电化学活性材料的梯度，使得电化学活性材料的含量在中心区域比周边区域更大。
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公开(公告)号：US07943268B2
公开(公告)日：2011-05-17
申请号：US11242698
申请日：2005-10-04
CPC分类号： H01M8/1004 , H01M4/8605 , H01M4/8647
摘要： The present invention is directed to addressing performance issues attributable to membrane electrode assemblies, and the components thereof, in electrochemical conversion cells. In accordance with one embodiment of the present invention, a device comprising at least one electrochemical conversion cell is provided. The cell is configured to convert first and second reactants to electrical energy and comprises a membrane electrode assembly and at least one membrane reinforcement layer. The combination of elastic modulus and thickness of the reinforcement layer and the bond between the reinforcement layer and the membrane electrode assembly are sufficient to enhance the structural integrity of the membrane electrode assembly beyond the operational degradation threshold of the assembly.
摘要翻译： 本发明涉及在电化学转化电池中解决归属于膜电极组件及其组件的性能问题。 根据本发明的一个实施例，提供了包括至少一个电化学转换电池的装置。 电池被配置为将第一和第二反应物转化为电能，并且包括膜电极组件和至少一个膜增强层。 增强层的弹性模量和厚度的组合以及加强层和膜电极组件之间的结合足以增强膜电极组件超过组件的操作劣化阈值的结构完整性。
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公开(公告)号：US07977005B2
公开(公告)日：2011-07-12
申请号：US11127044
申请日：2005-05-11
申请人： Bhaskar Sompalli , Brian A. Litteer , John P. Healy , Susan G. Yan , Hubert A. Gasteiger , Wenbin Gu , Gerald W. Fly
发明人： Bhaskar Sompalli , Brian A. Litteer , John P. Healy , Susan G. Yan , Hubert A. Gasteiger , Wenbin Gu , Gerald W. Fly
IPC分类号： H01M2/00
CPC分类号： H01M4/8605 , H01M4/8636 , H01M4/881 , H01M4/8817 , H01M4/8828 , H01M4/8857 , H01M4/8896 , H01M4/92 , H01M8/023 , H01M8/0267 , H01M8/0271 , H01M8/0276 , H01M8/0284 , H01M8/04119 , H01M8/1004 , H01M8/241 , H01M8/2457 , H01M8/247 , H01M2008/1095
摘要： A fuel cell including an anode-side catalyst coated membrane and a cathode-side catalyst coated membrane. At least a portion of a reduced-permeability layer is disposed between the ionically conductive membrane and the anode-side and cathode-side gas diffusion media, wherein the reduced-permeability layer is formed of a material that has a permeability that is less than a permeability of the ionically conductive member. The reduced-permeability layer may also be formed of a material that is softer than the ionically conductive membrane.
摘要翻译： 一种燃料电池，包括阳极侧催化剂涂覆膜和阴极侧催化剂涂覆膜。 降膜渗透层的至少一部分设置在离子传导膜与阳极侧和阴极侧气体扩散介质之间，其中透光性层由具有小于 离子导电部件的渗透性。 还原导电层也可以由比离子导电膜更软的材料形成。
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公开(公告)号：US07179553B2
公开(公告)日：2007-02-20
申请号：US10236804
申请日：2002-09-06
申请人： Michael W Murphy , Brian A Litteer
发明人： Michael W Murphy , Brian A Litteer
CPC分类号： B01D65/104 , H01M8/04671 , H01M8/1023 , H01M8/1039 , H01M8/1067
摘要： A method and system for detecting imperfections in a membrane electrode assembly of an electrochemical fuel cell, and more particularly for detecting defects within a proton exchange membrane in a membrane electrode assembly which is optionally sandwiched between conductive diffusion media layers or between conductive diffusion layers with at least one rigid solid that is transparent to infrared radiation. A potential voltage is applied across the membrane and the presence of a defect and preferably the location of a defect is determined by monitoring variations in intensity level of infrared radiation emitted from a surface of the membrane electrode assembly.
摘要翻译： 一种用于检测电化学燃料电池的膜电极组件中的缺陷的方法和系统，更具体地，用于检测膜电极组件中的质子交换膜内的缺陷，其可选地夹在导电扩散介质层之间或导电扩散层之间， 至少一个对红外辐射透明的刚性固体。 在膜上施加电位电压并且存在缺陷，优选地通过监测从膜电极组件的表面发射的红外辐射的强度水平的变化来确定缺陷的位置。
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6.发明授权Edge-protected catalyst-coated diffusion media and membrane electrode assemblies 有权边缘保护的催化剂涂覆的扩散介质和膜电极组件公开(公告)号：US08007949B2
公开(公告)日：2011-08-30
申请号：US10909265
申请日：2004-07-30
IPC分类号： H01M2/08
CPC分类号： H01M4/8605 , H01M4/8636 , H01M4/881 , H01M4/8817 , H01M4/8828 , H01M4/8896 , H01M8/023 , H01M8/0271 , H01M8/0273 , H01M8/0276 , H01M8/0284 , H01M8/04119 , H01M8/1004 , H01M2008/1095
摘要： A fuel cell including an anode-side catalyst coated diffusion medium and a cathode-side catalyst coated diffusion medium that sandwich an ionically conductive membrane. A sealing material is disposed between the ionically conductive membrane and the anode-side and cathode-side catalyst coated diffusion medium, wherein the sealing material is formed of a material that has a permeability that is less than a permeability of the ionically conductive member. The sealing material may also be formed of a material that is softer than the ionically conductive membrane such that the sealing material may deform and enable an membrane electrode assembly of the fuel cell to be subjected to uniform pressures throughout the assembly.
摘要翻译： 一种燃料电池，其包括阳极侧催化剂涂覆的扩散介质和夹着离子传导膜的阴极侧催化剂涂覆的扩散介质。 密封材料设置在离子导电膜与阳极侧和阴极侧催化剂涂覆的扩散介质之间，其中密封材料由具有小于离子传导构件的磁导率的磁导率的材料形成。 密封材料也可以由比离子导电膜更软的材料形成，使得密封材料可能变形并且使燃料电池的膜电极组件在整个组装过程中经受均匀的压力。
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公开(公告)号：US20090029235A1
公开(公告)日：2009-01-29
申请号：US11828895
申请日：2007-07-26
申请人： Annette M. Brenner , Hubert A. Gasteiger , Wenbin Gu , James Leistra , Brian A. Litteer , Han Liu , Susan G. Yan , Jingxin Zhang
发明人： Annette M. Brenner , Hubert A. Gasteiger , Wenbin Gu , James Leistra , Brian A. Litteer , Han Liu , Susan G. Yan , Jingxin Zhang
CPC分类号： H01M4/8657 , H01M4/8605 , H01M4/8642 , H01M8/04197 , H01M8/1004 , H01M2250/20 , H01M2300/0082 , Y02E60/521 , Y02T90/32
摘要： An MEA for a fuel cell that employs multiple catalyst layers to reduce the hydrogen and/or oxygen partial pressure at the membrane so as to reduce the fluoride release rate from the membrane and reduce membrane degradation. An anode side multi-layer catalyst configuration is positioned at the anode side of the MEA membrane. The anode side multi-layer catalyst configuration includes an anode side under layer positioned against the membrane and including a catalyst, an anode side middle layer positioned against the anode side under layer and not including a catalyst and an anode side catalyst layer positioned against the anode side middle layer and opposite to the anode side under layer and including a catalyst, where the amount of catalyst in the anode side catalyst layer is greater than the amount of catalyst in the anode side under layer.
摘要翻译： 一种用于燃料电池的MEA，其采用多个催化剂层以降低膜上的氢和/或氧分压，从而降低氟离子的释放速率并降低膜的降解。 阳极侧多层催化剂配置位于MEA膜的阳极侧。 阳极侧多层催化剂构造包括：阳极侧下层，其位于膜的外部并且包括催化剂，阳极侧中间层，其位于阳极侧下层且不包括催化剂;以及阳极侧催化剂层，其位于阳极 并且包括催化剂，其中阳极侧催化剂层中的催化剂的量大于阳极侧下层的催化剂的量。
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公开(公告)号：US08647785B2
公开(公告)日：2014-02-11
申请号：US13107526
申请日：2011-05-13
IPC分类号： H01M8/04
CPC分类号： H01M8/04559 , H01M4/92 , H01M8/0432 , H01M8/04529 , Y02E60/50
摘要： A system and method for determining a maximum average cell voltage set-point for fuel cells in a fuel cell stack that considers oxidation of the catalyst in the fuel cells. The method includes determining the average cell voltage, the stack current density (I) and an internal resistance (R) of membranes in the fuel cells to calculate an IR corrected average cell voltage. The IR corrected average cell voltage is then used to determine the oxidation state of the catalyst particles using, for example, an empirical model. The oxidation state of the particles is then used to calculate the maximum average cell voltage set-point of the fuel cells, which is used to set the minimum power requested from the fuel cell stack.
摘要翻译： 一种用于确定燃料电池堆中的燃料电池的最大平均电池电压设定点的系统和方法，其考虑了燃料电池中的催化剂的氧化。 该方法包括确定燃料电池中的平均电池电压，堆电流密度（I）和膜的内阻（R），以计算IR校正的平均电池电压。 然后使用IR校正的平均电池电压来使用例如经验模型来确定催化剂颗粒的氧化态。 然后使用颗粒的氧化态来计算燃料电池的最大平均电池电压设定点，其用于设定从燃料电池堆所要求的最小功率。
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公开(公告)号：US08206872B2
公开(公告)日：2012-06-26
申请号：US11828895
申请日：2007-07-26
申请人： Annette M. Brenner , Hubert A. Gasteiger , Wenbin Gu , James Leistra , Brian A. Litteer , Han Liu , Susan G. Yan , Jingxin Zhang
发明人： Annette M. Brenner , Hubert A. Gasteiger , Wenbin Gu , James Leistra , Brian A. Litteer , Han Liu , Susan G. Yan , Jingxin Zhang
IPC分类号： H01M8/10
CPC分类号： H01M4/8657 , H01M4/8605 , H01M4/8642 , H01M8/04197 , H01M8/1004 , H01M2250/20 , H01M2300/0082 , Y02E60/521 , Y02T90/32
摘要： An MEA for a fuel cell that employs multiple catalyst layers to reduce the hydrogen and/or oxygen partial pressure at the membrane so as to reduce the fluoride release rate from the membrane and reduce membrane degradation. An anode side multi-layer catalyst configuration is positioned at the anode side of the MEA membrane. The anode side multi-layer catalyst configuration includes an anode side under layer positioned against the membrane and including a catalyst, an anode side middle layer positioned against the anode side under layer and not including a catalyst and an anode side catalyst layer positioned against the anode side middle layer and opposite to the anode side under layer and including a catalyst, where the amount of catalyst in the anode side catalyst layer is greater than the amount of catalyst in the anode side under layer.
摘要翻译： 一种用于燃料电池的MEA，其采用多个催化剂层以降低膜上的氢和/或氧分压，从而降低氟离子的释放速率并降低膜的降解。 阳极侧多层催化剂配置位于MEA膜的阳极侧。 阳极侧多层催化剂构造包括：阳极侧下层，其位于膜的外部并且包括催化剂，阳极侧中间层，其位于阳极侧下层且不包括催化剂;以及阳极侧催化剂层，其位于阳极 并且包括催化剂，其中阳极侧催化剂层中的催化剂的量大于阳极侧下层的催化剂的量。
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公开(公告)号：US07816058B2
公开(公告)日：2010-10-19
申请号：US10981867
申请日：2004-11-05
CPC分类号： H01M4/8642 , H01M4/8605 , H01M4/8657 , H01M8/1004 , H01M2008/1095
摘要： A membrane electrode assembly including an ionically conductive member, an electrode, and an electrically conductive member including an active layer, wherein the electrode is a smooth, continuous layer that completely covers and supports the ionically conductive member. The electrode and active layer further include a first and second catalyst content, respectively; and 50% of the total catalyst content is present in the electrode and 50% of the total catalyst content is present in the active layer.
摘要翻译： 一种膜电极组件，其包括离子导电部件，电极和包括有源层的导电部件，其中所述电极是完全覆盖和支撑所述离子导电部件的光滑连续的层。 电极和活性层还分别包括第一和第二催化剂含量; 总催化剂含量的50％存在于电极中，总催化剂含量的50％存在于活性层中。
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