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    CARBON SHEET, GAS DIFFUSION ELECTRODE SUBSTRATE, WOUND BUDY, AND FUEL CELL
    2.
    发明专利
    CARBON SHEET, GAS DIFFUSION ELECTRODE SUBSTRATE, WOUND BUDY, AND FUEL CELL 未知

    公开(公告)号：CA2997688A1

    公开(公告)日：2017-04-27

    申请号：CA2997688

    申请日：2016-10-11

    Applicant: TORAY INDUSTRIES

    Inventor： SODE KATSUYA ,  SUGAHARA TORU ,  ANDO TAKASHI

    IPC: C04B35/83 ,  B32B5/28 ,  C04B38/00 ,  C04B38/06 ,  H01M4/96 ,  H01M8/02 ,  H01M8/10

    Abstract: The purpose of the present invention is to provide a carbon sheet that is suitably employed in a gas-diffusion-electrode substrate that has excellent flooding resistance and with which it is possible to suppress internal peeling of the carbon sheet. In order to achieve the aforementioned purpose, the present invention has the following configuration. Specifically, provided is a porous carbon sheet containing carbon fibers and a binder, wherein, in a section between a surface on one side of the carbon sheet and a surface on the other side thereof, when layers obtained by dividing, under compression, the carbon sheet into six equal parts in the thickness direction are assumed to be layer 1, layer 2, layer 3, layer 4, layer 5, and layer 6, in order starting from the layer including the surface on the one side to the layer including the surface on the other side, the layer in which the packing ratio under compression is the greatest is layer 2, and the relationships of the packing ratios under compression among layer 2, layer 3, layer 4, layer 5, and layer 6 are such that layer 2 has the greatest packing ratio, and layer 3 has the second-greatest packing ratio.

    CARBON SHEET, GAS DIFFUSION ELECTRODE SUBSTRATE, AND FUEL CELL
    3.
    发明专利
    CARBON SHEET, GAS DIFFUSION ELECTRODE SUBSTRATE, AND FUEL CELL 未知

    公开(公告)号：CA3006426A1

    公开(公告)日：2017-06-15

    申请号：CA3006426

    申请日：2016-12-08

    Applicant: TORAY INDUSTRIES

    Inventor： SODE KATSUYA ,  CHIDA TAKASHI ,  SUGAHARA TORU ,  WAKATABE MICHIO ,  HASHIMOTO MASARU ,  SUNAHARA TETSUYA ,  UMEZAKI YUYA

    IPC: H01M4/88 ,  H01M4/96 ,  H01M8/10

    Abstract: The present invention addresses the problem of providing a gas diffusion electrode substrate which is excellent in suppressing reduction of power generation performance at high current density and can suppress fracturing or structural breakage during conveyance, and which can be stably produced. The present invention is: a porous carbon sheet including at least carbon fibers, the carbon sheet having a thickness of 30-95 µm, a gas permeation resistance of 0.5-8.8 Pa, and a tensile strength of 5-50 N/cm; and a gas diffusion electrode substrate having a microporous layer including at least an electroconductive filler on at least one surface of a porous carbon sheet including at least carbon fibers, the thickness of a large-pore part being 3-60 µm when the gas diffusion electrode substrate is divided into a small-pore part and a large-pore part in the thickness direction thereof.

    CARBON SHEET, GAS DIFFUSION ELECTRODE SUBSTRATE AND FUEL CELL
    4.
    发明专利
    CARBON SHEET, GAS DIFFUSION ELECTRODE SUBSTRATE AND FUEL CELL 未知

    公开(公告)号：CA2962735A1

    公开(公告)日：2016-04-21

    申请号：CA2962735

    申请日：2015-10-07

    Applicant: TORAY INDUSTRIES

    Inventor： TANIMURA YASUAKI ,  CHIDA TAKASHI ,  SUGAHARA TORU ,  UTSUNOMIYA MASAMICHI ,  KAMAE TOSHIYA ,  SODE KATSUYA ,  ANDO TAKASHI

    IPC: H01M4/96 ,  H01M4/86 ,  H01M8/02 ,  H01M8/10

    Abstract: One purpose of the present invention is to provide a carbon sheet suitable for use in gas diffusion electrode base materials such that, in a gas diffusion electrode base material, anti-flooding properties are superior because of large improvements in gas diffusibility and drainage properties, high electricity generating performance can be expressed even when operated at comparatively low temperatures and in a high current density region, and further, mechanical properties, conductivity, and heat conductivity are superior. One embodiment of this carbon sheet for achieving the purpose above is a porous carbon sheet containing carbon fiber and a binder, wherein the carbon sheet is characterized in that when measuring the depth distribution of the surfaces and letting surface layer area ratio X be the proportion of the surface area for parts with a depth of 20 µm or less in a measured surface area on one surface and surface layer area ratio Y be the proportion of the surface area for parts with a depth of 20 µm or less in a measured surface area on the other surface, the surface layer area ratio X is larger than the surface layer area ratio Y and that difference is 3 - 12%.

    CARBON SHEET, GAS DIFFUSION ELECTRODE SUBSTRATE AND FUEL CELL
    5.
    发明专利
    CARBON SHEET, GAS DIFFUSION ELECTRODE SUBSTRATE AND FUEL CELL 未知

    公开(公告)号：CA2962740C

    公开(公告)日：2022-09-06

    申请号：CA2962740

    申请日：2015-10-07

    Applicant: TORAY INDUSTRIES

    Inventor： SODE KATSUYA ,  CHIDA TAKASHI ,  UTSUNOMIYA MASAMICHI ,  SUGAHARA TORU ,  ANDO TAKASHI

    IPC: H01M4/96 ,  H01M4/86 ,  H01M8/10

    Abstract: The present invention provides a carbon sheet suitable for use in gas diffusion electrode base materials that has superior anti-flooding properties, can be prevented from bending into gas flow paths, further has superior mechanical properties, conductivity and thermal conductivity, and can be manufactured stably. One embodiment of this carbon sheet for achieving the purpose above is a porous carbon sheet containing carbon fiber and a binder, wherein the carbon sheet is characterized in that in a section from a plane having a 50% filling ratio closest to one surface to a plane having a 50% filling ratio closest to the other surface, when letting layer X be a layer with the largest filling ratio close to the one surface, layer Y be a layer with a filling ratio smaller than layer X close to the other surface, and layer Z be the layer positioned between layer X and layer Y for layers obtained by dividing the carbon sheet equally into three in a direction perpendicular to the surfaces, the filling ratio for the layers becomes smaller in order of layer X, layer Y, and layer Z.

    CARBON SHEET, GAS DIFFUSION ELECTRODE SUBSTRATE AND FUEL CELL
    6.
    发明专利
    CARBON SHEET, GAS DIFFUSION ELECTRODE SUBSTRATE AND FUEL CELL 未知

    公开(公告)号：CA2962722A1

    公开(公告)日：2016-04-21

    申请号：CA2962722

    申请日：2015-10-07

    Applicant: TORAY INDUSTRIES

    Inventor： UTSUNOMIYA MASAMICHI ,  HASHIMOTO MASARU ,  SODE KATSUYA ,  KAMAE TOSHIYA

    IPC: H01M8/0234 ,  B01J23/42 ,  B32B33/00 ,  C01B32/00

    Abstract: The present invention provides a carbon sheet that has excellent anti-flooding ability and can be used suitably in a gas diffusion electrode base material. Another aspect of the present invention provides a gas diffusion electrode base material using this carbon sheet as the base material, and a fuel cell containing this gas diffusion electrode. This carbon sheet is a porous carbon sheet containing a carbon fiber and a binding material and is characterized in that: layers are obtained in a section spanning from a plane closest to one of the surfaces and having 50% of the mean fluorine intensity to a plane closest to the other surface and having 50% of the mean fluorine intensity by dividing this section evenly into three in an orthogonal direction to the carbon sheet plane; among the layer close to one of the surfaces and the layer close to the other surface, the layer having the larger layer mean fluorine intensity is designated layer X, the layer having the smaller one is designated layer Y, and the layer between the layer X and the layer Y is designated layer Z; and the layer mean fluorine intensities decrease in the order: layer X, layer Y, and layer Z.

    CARBON SHEET COMPRISING CARBON FIBER AND A BINDER FOR GAS DIFFUSION ELECTRODE SUBSTRATE AND FUEL CELL
    7.
    发明专利
    CARBON SHEET COMPRISING CARBON FIBER AND A BINDER FOR GAS DIFFUSION ELECTRODE SUBSTRATE AND FUEL CELL 未知

    公开(公告)号：CA2962735C

    公开(公告)日：2022-07-19

    申请号：CA2962735

    申请日：2015-10-07

    Applicant: TORAY INDUSTRIES

    Inventor： TANIMURA YASUAKI ,  CHIDA TAKASHI ,  SUGAHARA TORU ,  UTSUNOMIYA MASAMICHI ,  KAMAE TOSHIYA ,  SODE KATSUYA ,  ANDO TAKASHI

    IPC: H01M8/1062

    Abstract: One purpose of the present invention is to provide a carbon sheet suitable for use in gas diffusion electrode base materials such that, in a gas diffusion electrode base material, anti-flooding properties are superior because of large improvements in gas diffusibility and drainage properties, high electricity generating performance can be expressed even when operated at comparatively low temperatures and in a high current density region, and further, mechanical properties, conductivity, and heat conductivity are superior. One embodiment of this carbon sheet for achieving the purpose above is a porous carbon sheet containing carbon fiber and a binder, wherein the carbon sheet is characterized in that when measuring the depth distribution of the surfaces and letting surface layer area ratio X be the proportion of the surface area for parts with a depth of 20 µm or less in a measured surface area on one surface and surface layer area ratio Y be the proportion of the surface area for parts with a depth of 20 µm or less in a measured surface area on the other surface, the surface layer area ratio X is larger than the surface layer area ratio Y and that difference is 3 - 12%.

    CARBON SHEET, GAS DIFFUSION ELECTRODE SUBSTRATE AND FUEL CELL
    8.
    发明专利
    CARBON SHEET, GAS DIFFUSION ELECTRODE SUBSTRATE AND FUEL CELL 未知

    公开(公告)号：CA2962740A1

    公开(公告)日：2016-04-21

    申请号：CA2962740

    申请日：2015-10-07

    Applicant: TORAY INDUSTRIES

    Inventor： SODE KATSUYA ,  CHIDA TAKASHI ,  UTSUNOMIYA MASAMICHI ,  SUGAHARA TORU ,  ANDO TAKASHI

    IPC: H01M4/96 ,  H01M4/86 ,  H01M8/10

    Abstract: The present invention provides a carbon sheet suitable for use in gas diffusion electrode base materials that has superior anti-flooding properties, can be prevented from bending into gas flow paths, further has superior mechanical properties, conductivity and thermal conductivity, and can be manufactured stably. One embodiment of this carbon sheet for achieving the purpose above is a porous carbon sheet containing carbon fiber and a binder, wherein the carbon sheet is characterized in that in a section from a plane having a 50% filling ratio closest to one surface to a plane having a 50% filling ratio closest to the other surface, when letting layer X be a layer with the largest filling ratio close to the one surface, layer Y be a layer with a filling ratio smaller than layer X close to the other surface, and layer Z be the layer positioned between layer X and layer Y for layers obtained by dividing the carbon sheet equally into three in a direction perpendicular to the surfaces, the filling ratio for the layers becomes smaller in order of layer X, layer Y, and layer Z.

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