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    • 2. 发明授权
    • Membrane electrode assembly for use in solid polymer electrolyte fuel cell
    • 用于固体聚合物电解质燃料电池的膜电极组件
    • US07807314B2
    • 2010-10-05
    • US11714163
    • 2007-03-06
    • Shintaro TanakaYoichi AsanoRyoichiro TakahashiTakuma Yamawaki
    • Shintaro TanakaYoichi AsanoRyoichiro TakahashiTakuma Yamawaki
    • H01M8/10H01M4/02
    • H01M8/1004H01M4/8807H01M8/0243H01M8/0245
    • A membrane electrode assembly that includes a cathode electrode catalyst layer and an anode electrode catalyst layer respectively disposed on one side and the other side of a solid polymer electrolyte membrane, gas diffusion layers disposed respectively on the sides of the electrode catalyst layers; and intermediate layers having pores and disposed respectively between the electrode catalyst layer and the gas diffusion layer and between the electrode catalyst layer and the gas diffusion layer. The volume per unit area and per unit mass of the pores having pore size of 0.1 to 10 μm in the intermediate layer in the cathode side is larger than that in the intermediate layer in the anode side. The pore volume of the intermediate layer in the cathode side is 1.7 to 4.3 μl/cm2/mg and that of the intermediate layer in the anode side is 0.5 to 1.4 μl/cm2/mg.
    • 一种膜电极组件,其包括分别设置在固体聚合物电解质膜的一侧和另一侧上的阴极电极催化剂层和阳极电极催化剂层,分别设置在电极催化剂层的侧面上的气体扩散层; 和具有孔的中间层,分别设置在电极催化剂层和气体扩散层之间以及电极催化剂层和气体扩散层之间。 阴极侧的中间层的孔径为0.1〜10μm的单位面积体积和单位质量的单位质量比阳极侧的中间层的体积大。 阴极侧的中间层的孔体积为1.7〜4.3μl/ cm 2 / mg,阳极侧的中间层的孔体积为0.5〜1.4μl/ cm 2 / mg。
    • 3. 发明申请
    • Membrane electrode structure for polymer electrolyte fuel cell
    • 聚合物电解质燃料电池膜电极结构
    • US20070202389A1
    • 2007-08-30
    • US11644824
    • 2006-12-26
    • Yoichi AsanoShintaro TanakaRyoichiro TakahashiTakuma Yamawaki
    • Yoichi AsanoShintaro TanakaRyoichiro TakahashiTakuma Yamawaki
    • H01M4/94H01M4/96
    • H01M8/1004H01M8/0234H01M8/0239H01M8/0243H01M8/0245
    • A membrane electrode structure for a polymer electrolyte fuel cell capable of offering excellent power generation performance both in high humidity conditions and low humidity conditions. The membrane electrode structure for a polymer electrolyte fuel cell is composed of a solid polymer electrolyte membrane 2 having proton conductivity, a cathode electrode catalyst layer 3, an anode electrode catalyst layer 4 and gas diffusion layers 5, 6. The gas diffusion layers 5, 6 have through holes with a mean diameter of 15 to 45 μm and a specific surface area of 0.25 to 0.5 m2/g, and have a bulk density of 0.35 to 0.55 g/cm3. An intermediate layer 7 is provided between the cathode electrode catalyst layer 3 and the gas diffusion layer 5, and the intermediate layer 7 has through holes with a diameter of 0.01 to 10 μm and a volume of 3.8 to 7.0 μl/cm2. The intermediate layer 7 is made of a water-repellent resin containing conductive particles.
    • 一种用于聚合物电解质燃料电池的膜电极结构,其能够在高湿度条件和低湿度条件下提供优异的发电性能。 用于固体高分子型燃料电池的膜电极结构由具有质子传导性的固体高分子电解质膜2,阴极电极催化剂层3,阳极电极催化剂层4和气体扩散层5,6构成。 气体扩散层5,6具有平均直径为15至45μm,比表面积为0.25至0.5m 2 / g的通孔,其堆积密度为0.35至0.55g / cm 3。 中间层7设置在阴极催化剂层3和气体扩散层5之间,中间层7具有直径为0.01-10μm的通孔和3.8至7.0mul / cm 2的体积 。 中间层7由含有导电性粒子的防水树脂构成。
    • 4. 发明申请
    • Membrane electrode assembly for use in solid polymer electrolyte fuel cell
    • 用于固体聚合物电解质燃料电池的膜电极组件
    • US20070218348A1
    • 2007-09-20
    • US11714163
    • 2007-03-06
    • Shintaro TanakaYoichi AsanoRyoichiro TakahashiTakuma Yamawaki
    • Shintaro TanakaYoichi AsanoRyoichiro TakahashiTakuma Yamawaki
    • H01M4/94
    • H01M8/1004H01M4/8807H01M8/0243H01M8/0245
    • The present invention provides a membrane electrode assembly for use in a solid polymer electrolyte fuel cell which assembly can ensure the gas diffusivity, the capability of discharging the generated water and the moisture retentivity, and can attain an excellent electric power generation performance in the gas atmosphere under a wide variety of humidity conditions. The membrane electrode assembly comprises: a cathode electrode catalyst layer 3 and an anode electrode catalyst layer 4 respectively disposed on one side and the other side of a solid polymer electrolyte membrane 2; gas diffusion layers 5 and 6 disposed respectively on the sides of the electrode catalyst layers 3 and 4; and intermediate layers 7 and 8 comprising pores and disposed respectively between the electrode catalyst layer 3 and the gas diffusion layer 5 and between the electrode catalyst layer 4 and the gas diffusion layer 6. The volume per unit area and per unit mass (pore volume) of the pores having pore size of 0.1 to 10 μm in the intermediate layer 7 in the cathode side is larger than that in the intermediate layer 8 in the anode side. The pore volume of the intermediate layer 7 in the cathode side is 1.7 to 4.3 μl/cm2/mg and that of the intermediate layer 8 in the anode side is 0.5 to 1.4 μl/cm2/mg. The intermediate layers 7 and 8 are each formed of a water-repellent resin comprising an electrically conducting particle.
    • 本发明提供一种用于固体聚合物电解质燃料电池的膜电极组件,其组装可以确保气体扩散性,排出生成水的能力和保湿性,并且可以在气体气氛中获得优异的发电性能 在各种湿度条件下。 膜电极组件包括:分别设置在固体聚合物电解质膜2的一侧和另一侧的阴极电极催化剂层3和阳极电极催化剂层4; 分别设置在电极催化剂层3和4的侧面上的气体扩散层5和6; 以及包含孔的中间层7和8分别设置在电极催化剂层3和气体扩散层5之间以及电极催化剂层4和气体扩散层6之间。 在阴极侧的中间层7中,孔径为0.1〜10μm的孔的单位面积体积(单位面积体积)(孔体积)比阳极侧的中间层8的体积大。 阴极侧的中间层7的孔体积为1.7〜4.3mul / cm 2 / mg,阳极侧的中间层8的孔体积为0.5〜1.4mul / cm 2, 2 / mg。 中间层7和8各自由包含导电颗粒的防水树脂形成。
    • 5. 发明申请
    • Membrane electrode assembly for use in solid polymer electrolyte fuel cell
    • 用于固体聚合物电解质燃料电池的膜电极组件
    • US20070218347A1
    • 2007-09-20
    • US11698873
    • 2007-01-29
    • Ryoichiro TakahashiYoichi AsanoShintaro TanakaTakuma Yamawaki
    • Ryoichiro TakahashiYoichi AsanoShintaro TanakaTakuma Yamawaki
    • H01M4/94H01M4/96
    • H01M8/0236H01M4/926H01M8/0234H01M8/0243H01M8/0245H01M8/04291H01M8/1004H01M2008/1095
    • The present invention provides a membrane electrode assembly for use in a solid polymer electrolyte fuel cell which assembly can attain an excellent electric power generation performance both under low-humidity conditions and under high-humidity conditions. The membrane electrode assembly includes: a solid polymer electrolyte membrane 2 having proton conductivity; a cathode electrode catalyst layer 3 disposed on one side of the solid polymer electrolyte membrane 2; an anode electrode catalyst layer 4 disposed on the other side of the solid polymer electrolyte membrane 2; and two gas diffusion layers 5 and 6 disposed on a side of the cathode electrode catalyst layer 3 and a side of the anode electrode catalyst layer 4, respectively, both these sides facing away from the solid polymer electrolyte membrane 2; wherein the gas diffusion layer 6 in the anode side is smaller in contact angle to water than the gas diffusion layer 5 in the cathode side. The membrane electrode assembly also includes at least two coating layers 11a and 11b different in properties from each other between the gas diffusion layer 5 and the cathode electrode catalyst layer 3, and at least two coating layers 12a and 12b different in properties from each other between the gas diffusion layer 6 and the anode electrode catalyst layer 4.
    • 本发明提供一种用于固体聚合物电解质燃料电池的膜电极组件,其组装可以在低湿度条件下和高湿度条件下获得优异的发电性能。 膜电极组件包括:具有质子传导性的固体聚合物电解质膜2; 设置在固体聚合物电解质膜2一侧的阴极电极催化剂层3; 设置在固体高分子电解质膜2的另一侧的阳极电极催化剂层4; 以及分别设置在阴极电极催化剂层3侧和阳极电极催化剂层4侧的两个面朝离固体高分子电解质膜2的两个气体扩散层5和6; 其中阳极侧的气体扩散层6与阴极侧的气体扩散层5的接触角小。 膜电极组件还包括在气体扩散层5和阴极电极催化剂层3之间彼此不同性质的至少两个涂层11a和11b以及至少两个不同性能的涂层12a和12b 彼此之间在气体扩散层6和阳极电极催化剂层4之间。
    • 9. 发明申请
    • Process for producing electrolyte membrane-bonded electrode and varnish composition used therein
    • US20060269655A1
    • 2006-11-30
    • US11498173
    • 2006-08-03
    • Makoto HigamiKohei GotoNagayuki KanaokaRyoichiro TakahashiYoichi AsanoOsamu KakutaniGen Okiyama
    • Makoto HigamiKohei GotoNagayuki KanaokaRyoichiro TakahashiYoichi AsanoOsamu KakutaniGen Okiyama
    • B05D5/12
    • H01M8/1023H01M4/8605H01M4/92H01M4/926H01M8/1004H01M8/1039H01M8/1053Y02P70/56
    • The present invention is intended to provide a process for producing an electrolyte membrane-bonded electrode having excellent power generation property when constitutes an electrode assembly, and a varnish composition for an electrolyte, by the use of which an electrolyte membrane-electrode bonded structure capable of retaining excellent power generation property is obtained. A process for producing a first electrolyte membrane-bonded electrode comprises applying, onto an electrode, a water-containing dispersion containing a perfluorosulfonic acid polymer, an organic solvent A and water and having a perfluorosulfonic acid polymer content of 0.5 to 20% by weight and then applying, onto the resulting film, a solution of sulfonated polyarylene in an organic solvent B, to form an electrolyte membrane. A process for producing a second electrolyte membrane-bonded electrode comprises applying, onto an electrode, a solution or dispersion containing a proton-conductive polymer, an organic solvent B and water and having a water content of 25 to 50% by weight and then applying, onto the resulting film, a solution or dispersion containing a proton-conductive polymer, an organic solvent B and water and having a water content of less than 25% by weight, to form an electrolyte membrane. A process for producing a third electrolyte membrane-bonded electrode comprises applying, onto an electrode, a varnish composition 6 obtained by dissolving a sulfonated polymer in a solvent containing an organic solvent C, an organic solvent D and water to form an electrolyte membrane, said organic solvent C being a good solvent for the sulfonated polymer and having a higher boiling point than that of other solvent components, said organic solvent D having a boiling point of not lower than 50° C. and being not a good solvent for the sulfonated polymer when used alone but causing a solubility region of the sulfonated polymer to appear when mixed with the organic solvent C and/or the water. The varnish composition 6 of the invention is a varnish composition obtained by dissolving the sulfonated polymer in a solvent containing an organic solvent C, an organic solvent D and water.