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    Method and materials for bonding electrodes to interconnect layers in solid oxide fuel cell stacks
    1.
    发明申请
    Method and materials for bonding electrodes to interconnect layers in solid oxide fuel cell stacks 有权
    用于将电极连接到固体氧化物燃料电池堆中的互连层的方法和材料

    公开(公告)号：US20070111069A1

    公开(公告)日：2007-05-17

    申请号：US11271946

    申请日：2005-11-14

    申请人： Timothy Rehg ,  Jil Guan ,  Kurtis Montgomery ,  Atul Verma ,  Gregory Lear

    发明人： Timothy Rehg ,  Jil Guan ,  Kurtis Montgomery ,  Atul Verma ,  Gregory Lear

    IPC分类号： H01M8/12 ,  C04B35/64

    CPC分类号： H01M8/2404 ,  C04B37/005 ,  C04B37/006 ,  C04B37/025 ,  C04B37/026 ,  C04B2237/04 ,  C04B2237/06 ,  C04B2237/066 ,  C04B2237/123 ,  C04B2237/124 ,  C04B2237/125 ,  H01M8/0228 ,  H01M8/028 ,  H01M8/0286 ,  H01M8/0297 ,  H01M8/2425 ,  H01M2008/1293

    摘要： A method and related bonding compositions for use in assembling a solid oxide fuel cell (“SOFC”) stack having thermally and chemically stable and electrically conductive bonds between alternating fuel cells and interconnect components in the stack. The improved method and materials allow for the assembly of solid oxide fuel cells having a stronger and more reliable bond with good electrical contact in situ between the SOFC interconnect layers (plates) and the electrodes. The bonding materials and method according to the invention provide good electrical performance while maintaining the mechanical and electrical integrity of SOFC stacks without requiring excessive mechanical compression of the stack as exemplified by prior art systems. The preferred bonding agents comprise a primary phase that provides the electrical conduction path during fuel cell operation, as well as the mechanical strength necessary to insure a reliable connection between the interconnect and the relevant anode or cathode surfaces of the fuel cell. Secondary phases can be added in small amounts to the primary phase to improve adhesion. An exemplary method according to the invention also contemplates various different steps for pre-treating the surfaces of the interconnect plates and electrodes to improve their surface bonding properties.

    摘要翻译： 一种用于组装固体氧化物燃料电池（“SOFC”）堆叠的方法和相关的粘合组合物，其在交替的燃料电池和叠层中的互连部件之间具有热和化学稳定且导电的结合。 改进的方法和材料允许组装固体氧化物燃料电池，其具有更强和更可靠的结合，在SOFC互连层（板）和电极之间原位具有良好的电接触。 根据本发明的接合材料和方法提供良好的电性能，同时保持SOFC堆叠的机械和电气完整性，而不需要堆叠的过度机械压缩，如现有技术系统所示。 优选的粘合剂包括在燃料电池操作期间提供导电路径的主相以及确保在互连和燃料电池的相关阳极或阴极表面之间的可靠连接所必需的机械强度。 次相可以少量添加到主相以改善粘附性。 根据本发明的示例性方法还考虑了用于预处理互连板和电极的表面以改善其表面粘合性质的各种不同步骤。

    High performance cathodes for solid oxide fuel cells
    3.
    发明授权
    High performance cathodes for solid oxide fuel cells 有权
    用于固体氧化物燃料电池的高性能阴极

    公开(公告)号：US06632554B2

    公开(公告)日：2003-10-14

    申请号：US09832625

    申请日：2001-04-10

    申请人： Rajiv Doshi ,  Jie Guan ,  Nguyen Minh ,  Kurtis Montgomery ,  Estela Ong ,  Gregory Lear

    发明人： Rajiv Doshi ,  Jie Guan ,  Nguyen Minh ,  Kurtis Montgomery ,  Estela Ong ,  Gregory Lear

    IPC分类号： H01M400

    CPC分类号： H01M4/9066 ,  H01M4/8605 ,  H01M4/9016 ,  H01M4/9033 ,  H01M4/92 ,  H01M2004/8689

    摘要： The present invention relates to a multi-layered and multifunctional cathode in solid oxide fuel cells having high conductivity, high catalytic activity, minimized coefficient of thermal expansion (CTE) mismatch, excellent compatibility to other portions of the fuel cell, and reduced temperature operation. The cathode comprises a conductive layer, a catalyst layer and a graded composition layer. The conductive layer has a first density, the catalyst layer has a second density that is less than the first density, and the graded composition layer is characterized by a graded electronic conductivity and a graded ionic conductivity.

    摘要翻译： 本发明涉及具有高导电性，高催化活性，最小热膨胀系数（CTE）不匹配，与燃料电池的其它部分的良好相容性以及降低温度操作的固体氧化物燃料电池中的多层和多功能阴极。 阴极包括导电层，催化剂层和渐变组合物层。 导电层具有第一密度，催化剂层具有小于第一密度的第二密度，并且梯度组成层的特征在于梯度电子导电性和梯度离子电导率。