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    Fuel cell electrode catalyst solution and production method therefor
    2.
    发明授权
    Fuel cell electrode catalyst solution and production method therefor 有权
    燃料电池电极催化剂溶液及其制备方法

    公开(公告)号：US06589685B2

    公开(公告)日：2003-07-08

    申请号：US09810279

    申请日：2001-03-19

    申请人： Seiji Mizuno ,  Tatsuya Kawahara

    发明人： Seiji Mizuno ,  Tatsuya Kawahara

    IPC分类号： H01M486

    CPC分类号： B01J21/18 ,  B01J23/42 ,  B01J37/0203 ,  B01J37/0211 ,  H01M4/881 ,  H01M4/8828

    摘要： The invention improves operability in forming a catalyst electrode, and improves performance of a fuel cell. A catalyst-loaded carbon is dispersed in a mixed solution of an azeotropic solvent and ion exchanged water. An electrolyte solution is added to the dispersed solution. A solvent, such as ethanol or the like, is added to adjust the viscosity and the water content of the solution, thereby providing an electrode catalyst solution. The use of the obtained solution as an ink for forming a catalyst layer through printing improves printing characteristic and drying characteristic.

    摘要翻译： 本发明提高了形成催化剂电极的可操作性，并提高了燃料电池的性能。 将负载催化剂的碳分散在共沸溶剂和离子交换水的混合溶液中。 向分散溶液中加入电解质溶液。 加入溶剂如乙醇等以调节溶液的粘度和水含量，从而提供电极催化剂溶液。 所得溶液作为通过印刷形成催化剂层的油墨的使用改善了印刷特性和干燥特性。

    ASSEMBLY FOR FUEL CELL, FUEL CELL, AND METHOD FOR MANUFACTURING FUEL CELL
    4.
    发明申请
    ASSEMBLY FOR FUEL CELL, FUEL CELL, AND METHOD FOR MANUFACTURING FUEL CELL 审中-公开
    燃料电池组件，燃料电池和制造燃料电池的方法

    公开(公告)号：US20090239116A1

    公开(公告)日：2009-09-24

    申请号：US12374723

    申请日：2007-07-24

    申请人： Masao Okumura ,  Satoshi Kadotani ,  Tatsuya Kawahara ,  Tatsuya Hatanaka

    发明人： Masao Okumura ,  Satoshi Kadotani ,  Tatsuya Kawahara ,  Tatsuya Hatanaka

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

    CPC分类号： H01M8/1004 ,  H01M4/8636 ,  H01M4/8642 ,  H01M4/8657 ,  H01M4/8807 ,  H01M4/881 ,  H01M4/8828 ,  H01M4/886 ,  H01M4/926 ,  H01M8/04119 ,  H01M2008/1095 ,  Y02P70/56

    摘要： Disclosed is a fuel cell wherein deterioration of fuel cell performance due to dry up phenomenon and flooding phenomenon is suppressed. Specifically disclosed is an assembly for fuel cells or a fuel cell wherein a catalyst layer contains a first composite catalyst particle containing a catalyst supporting particle and a solid polymer electrolyte and a second composite catalyst particle having a larger volume average particle diameter than the first composite catalyst particle and arrangement of the first composite catalyst particle and the second composite catalyst particle is controlled in the thickness direction of the catalyst layer. Consequently, deterioration of fuel cell performance due to dry up phenomenon or flooding phenomenon can be suppressed, thereby realizing a fuel cell with high efficiency.

    摘要翻译： 公开了一种燃料电池，其中抑制了由于干燥现象和溢流现象引起的燃料电池性能的劣化。 具体公开了一种用于燃料电池或燃料电池的组件，其中催化剂层包含含有催化剂载体颗粒和固体聚合物电解质的第一复合催化剂颗粒和具有比第一复合催化剂更大的体积平均粒径的第二复合催化剂颗粒 在催化剂层的厚度方向上控制第一复合催化剂颗粒和第二复合催化剂颗粒的颗粒和排列。 因此，可以抑制由于干燥现象或溢流现象引起的燃料电池性能的恶化，从而实现高效率的燃料电池。

    Method of manufacturing electrode or electrode-electrolyte membrane joint body for fuel cell and electrode for fuel cell
    6.
    发明授权
    Method of manufacturing electrode or electrode-electrolyte membrane joint body for fuel cell and electrode for fuel cell 失效

    公开(公告)号：US06653252B2

    公开(公告)日：2003-11-25

    申请号：US09973731

    申请日：2001-10-11

    申请人： Tatsuya Kawahara

    发明人： Tatsuya Kawahara

    IPC分类号： H01M488

    CPC分类号： H01M4/8882 ,  H01M4/8835 ,  H01M4/926 ,  H01M4/96 ,  H01M8/1004 ,  H01M2300/0082 ,  Y02P70/56 ,  Y10T29/49115

    摘要： A paste-like ink is prepared by dissolving camphor in an alcoholic solvent and dispersing fine carbon particles with a catalyst carried thereon in the solvent (step S100). A sheet-like electrode-forming member is formed on an electrolyte membrane by screen printing the paste-like ink thus obtained (step S102). The electrode-forming member is dried at 80° C. for one hour, in order to deposit camphor included in the electrode-forming member as a pore-forming agent (step S104). The electrode-forming member and the electrolyte membrane are joined with each other by hot pressing (step S106). The joint body of the electrode-forming member and the electrolyte membrane is dried under vacuum at 80° C. for three hours, in order to sublimate and remove camphor depositing in the electrode-forming member (step S108). This gives an electricity-generating layer that is a joint body of an electrode having a plurality of pores and the electrolyte membrane. The manufacturing process of the invention thus gives a joint body of an electrode having sufficient gas permeability and electrical conductivity and an electrolyte membrane.

    Fuel-cells system
    7.
    发明授权
    Fuel-cells system 失效
    燃料电池系统

    公开(公告)号：US6106963A

    公开(公告)日：2000-08-22

    申请号：US72667

    申请日：1998-05-05

    申请人： Shoichiro Nitta ,  Masayoshi Taki ,  Tatsuya Kawahara ,  Morimichi Miura

    发明人： Shoichiro Nitta ,  Masayoshi Taki ,  Tatsuya Kawahara ,  Morimichi Miura

    IPC分类号： B01D53/00 ,  C01B13/02 ,  H01M8/04 ,  H01M8/06 ,  H01M8/18 ,  H01M2/00

    CPC分类号： B01D53/00 ,  B60L11/1883 ,  B60L11/1887 ,  B60L11/1892 ,  B60L11/1898 ,  C01B13/0248 ,  H01M8/04089 ,  H01M8/0662 ,  C01B2210/0046 ,  H01M2300/0082 ,  H01M8/04022 ,  H01M8/0612 ,  Y02T90/34

    摘要： A fuel-cells system 20 is equipped with an oxygen enrichment unit 34 and supplies air whose oxygen partial pressure has been increased by the oxygen enrichment unit 34 to fuel cells 40 as oxidizing gas. The oxygen enrichment unit 34 is a magnetic oxygen enrichment device that effects oxygen enrichment utilizing the fact that the oxygen molecule is paramagnetic and when magnetized migrates toward a magnetic pole side. Specifically, a magnetic field is generated inside the oxygen enrichment unit 34 by an electromagnet, air compressed by a compressor unit 32 is supplied to the oxygen enrichment unit 34, and compressed oxygen-enriched air is discharged from the vicinity of the magnetic poles in the oxygen enrichment unit 34 and supplied to the fuel cells 40.

    摘要翻译： 燃料电池系统20配备有富氧单元34，并且将氧分压单元34的氧分压提高到作为氧化气体的燃料电池40。 富氧单元34是利用氧分子是顺磁性的并且当被磁化的磁极朝向磁极侧移动的事实而实现富氧的磁性富氧装置。 具体地说，通过电磁体在氧浓缩单元34的内部产生磁场，将由压缩机单元32压缩的空气供给到富氧单元34，并且将压缩的富氧空气从磁极附近排出 富氧单元34并供应到燃料电池40。

    Method and apparatus for forming catalyst layer on substrate constituting membrane electrode assembly
    9.
    发明申请
    Method and apparatus for forming catalyst layer on substrate constituting membrane electrode assembly 失效
    在构成膜电极组件的基材上形成催化剂层的方法和装置

    公开(公告)号：US20070129237A1

    公开(公告)日：2007-06-07

    申请号：US10588150

    申请日：2005-02-18

    申请人： Satoshi Kadotani ,  Tatsuya Kawahara ,  Masashi Murate ,  Yoshifumi Kaji

    发明人： Satoshi Kadotani ,  Tatsuya Kawahara ,  Masashi Murate ,  Yoshifumi Kaji

    IPC分类号： H01M4/88 ,  B05D5/12 ,  B05B5/025

    CPC分类号： H01M8/1004 ,  B05B5/057 ,  B05B5/14 ,  H01M4/8896 ,  H01M4/92 ,  H01M4/926 ,  Y02P70/56

    摘要： In an apparatus A in which electrode powder 10 is allowed to adhere via the electrostatic force to an electrolyte membrane that serves as a substrate 2 so as to form a catalyst layer, a screen 5 is held in a state of non-contact with the substrate 2, and a voltage is applied therebetween. The electrode powder 10 is allowed to adhere to an elastic feed roller 7, and the feed roller 7 is allowed to rotate in contact with the screen 5 by pressure. The electrode powder 10 is dispersed toward the substrate 2 so as to stably adhere thereto via both the electrostatic force and the extruding force of the elastic body. Variation of thickness and collapse of the outline are extremely reduced on the catalyst layer to be transferred and formed on the substrate (electrolyte membrane) via the electrostatic force using a conventionally used mesh-like screen so as to obtain a membrane electrode assembly with a high product manufacturing accuracy.

    摘要翻译： 在允许电极粉末10通过静电力粘附到用作基板2的电解质膜以形成催化剂层的装置A中，屏幕5被保持在与基板不接触的状态 2，并且施加电压。 允许电极粉末10粘附到弹性进给辊7，并且允许进给辊7通过压力与屏幕5接触地旋转。 电极粉末10通过弹性体的静电力和挤压力分散向基板2，从而稳定地粘附到基板2上。 通过使用常规使用的网状筛网，通过静电力在基板（电解质膜）上转移和形成的催化剂层上的轮廓的厚度和塌陷的变化极大地降低，从而获得具有高的膜电极组件 产品制造精度。

    Electrode for fuel cell and a method for producing the electrode
    10.
    发明授权
    Electrode for fuel cell and a method for producing the electrode 有权
    燃料电池用电极及电极的制造方法

    公开(公告)号：US06280872B1

    公开(公告)日：2001-08-28

    申请号：US09458997

    申请日：1999-12-10

    申请人： Toshiaki Ozaki ,  Tatsuya Kawahara

    发明人： Toshiaki Ozaki ,  Tatsuya Kawahara

    IPC分类号： H01M486

    CPC分类号： H01M4/8605 ,  H01M4/96 ,  H01M8/1004 ,  H01M2300/0082 ,  Y02P70/56 ,  Y10T29/49108 ,  Y10T29/49115

    摘要： Two electrodes contact an electrolyte membrane on both sides of the electrolyte membrane and each electrode contacts each separator on the other side of the electrode. An electrochemical fuel cell comprises a plurality of unit cells which comprise the electrolyte membrane, the electrode, and the separator. The electrode comprises a catalyst layer and a gas diffusion layer. The gas diffusion layer comprises an inner layer and an outer layer. The catalyst layer contacts the electrolyte membrane. The inner layer is interposed between the catalyst layer and the outer layer. The outer layer of the gas diffusion layer contacts the inner layer on the inner side and the separator on the outer side. Since the gas diffusion layer is formed as a double-layer structure which includes the inner layer having low electric resistance and close and fine structure made of carbon powder and the porous outer layer having a high water repellency, a gas diffusion ability, a water repellency, an electric collection ability of the electrode can be improved.

    摘要翻译： 两个电极接触电解质膜两侧的电解质膜，每个电极接触电极另一侧的每个隔膜。 电化学燃料电池包括多个单元电池，其包括电解质膜，电极和隔板。 电极包括催化剂层和气体扩散层。 气体扩散层包括内层和外层。 催化剂层与电解质膜接触。 内层介于催化剂层和外层之间。 气体扩散层的外层与内侧的内层和外侧的隔板接触。 由于气体扩散层形成为双层结构，其包括具有低电阻的内层和由碳粉末构成的精细结构，并且具有高斥水性，气体扩散能力，防水性的多孔外层 能够提高电极的集电能力。