公开(公告)号：US09871257B2

公开(公告)日：2018-01-16

申请号：US13980774

申请日：2012-01-16

申请人： Kazuhiro Sumioka ,  Shigeru Tanoue ,  Yoshihiro Sako

发明人： Kazuhiro Sumioka ,  Shigeru Tanoue ,  Yoshihiro Sako

IPC分类号： H01M8/10 ,  H01M4/88 ,  D01F9/22 ,  D21H13/50 ,  H01M8/0234 ,  H01M4/86 ,  H01M4/96 ,  H01M8/1018

CPC分类号： H01M4/8807 ,  D01F9/22 ,  D21H13/50 ,  H01M4/8605 ,  H01M4/96 ,  H01M8/0234 ,  H01M2008/1095 ,  Y02P70/56

摘要： Provided is a porous electrode substrate having excellent thickness precision, gas permeability and conductivity, handling efficiency, low production costs and a high carbonization rate during carbonization. Also provided are a method for manufacturing such a substrate, a precursor sheet and fibrillar fiber used for forming such a substrate, along with a membrane electrode assembly and a polymer electrolyte fuel cell that contain such a substrate. The method for manufacturing a porous electrode substrate includes step (1) for manufacturing a precursor sheet in which short carbon fibers (A) and carbon fiber precursor (b) are dispersed, and step (2) for carbonizing the precursor sheet, and the volume contraction rate of carbon fiber precursor (b) in step (2) is 83% or lower. The present invention also relates to a porous electrode substrate obtained by such a manufacturing method, a precursor sheet and fibrillar fiber used for forming the substrate, along with a membrane electrode assembly and a polymer electrolyte fuel cell containing the substrate.

公开(公告)号：US20130302714A1

公开(公告)日：2013-11-14

申请号：US13980774

申请日：2012-01-16

申请人： Kazuhiro Sumioka ,  Shigeru Tanoue ,  Yoshihiro Sako

发明人： Kazuhiro Sumioka ,  Shigeru Tanoue ,  Yoshihiro Sako

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

CPC分类号： H01M4/8807 ,  D01F9/22 ,  D21H13/50 ,  H01M4/8605 ,  H01M4/96 ,  H01M8/0234 ,  H01M2008/1095 ,  Y02P70/56

摘要： Provided is a porous electrode substrate having excellent thickness precision, gas permeability and conductivity, handling efficiency, low production costs and a high carbonization rate during carbonization. Also provided are a method for manufacturing such a substrate, a precursor sheet and fibrillar fiber used for forming such a substrate, along with a membrane electrode assembly and a polymer electrolyte fuel cell that contain such a substrate. The method for manufacturing a porous electrode substrate includes step (1) for manufacturing a precursor sheet in which short carbon fibers (A) and carbon fiber precursor (b) are dispersed, and step (2) for carbonizing the precursor sheet, and the volume contraction rate of carbon fiber precursor (b) in step (2) is 83% or lower. The present invention also relates to a porous electrode substrate obtained by such a manufacturing method, a precursor sheet and fibrillar fiber used for forming the substrate, along with a membrane electrode assembly and a polymer electrolyte fuel cell containing the substrate.

摘要翻译： 提供一种多孔电极基板，其具有优异的厚度精度，透气性和导电性，处理效率，低碳化时的高生产成本和高碳化速度。 还提供了用于制造这种基板，用于形成这种基板的前体片和原纤维纤维的方法，以及包含这种基底的膜电极组件和聚合物电解质燃料电池。 多孔电极基板的制造方法包括制造分散了短碳纤维（A）和碳纤维前体（b）的前体片的工序（1），前体片碳化的工序（2） 步骤（2）中碳纤维前体（b）的收缩率为83％以下。 本发明还涉及通过这种制造方法获得的多孔电极基板，用于形成基板的前体片和原纤维纤维，以及包含该基底的膜电极组件和聚合物电解质燃料电池。

公开(公告)号：US20130224625A1

公开(公告)日：2013-08-29

申请号：US13882842

申请日：2011-10-26

申请人： Kazuhiro Sumioka ,  Yoshihiro Sako

发明人： Kazuhiro Sumioka ,  Yoshihiro Sako

IPC分类号： H01M4/86 ,  H01M4/88

CPC分类号： H01M4/8657 ,  B32B18/00 ,  C04B35/83 ,  C04B2235/526 ,  C04B2235/5264 ,  C04B2235/5268 ,  C04B2235/5272 ,  C04B2235/602 ,  C04B2235/652 ,  C04B2235/663 ,  C04B2237/385 ,  C04B2237/584 ,  D21H13/50 ,  D21H27/00 ,  H01M4/8605 ,  H01M4/8626 ,  H01M4/8803 ,  H01M4/8875 ,  H01M4/8885 ,  H01M4/96 ,  H01M8/0234 ,  H01M8/0245 ,  Y02E60/50 ,  Y02P70/56

摘要： Provided are: a porous electrode substrate which has excellent handling properties and surface smoothness and satisfactory gas permeability and electrical conductivity, and enables the reduction of damage to a polymer electrolyte membrane when integrated into a fuel cell; and a process for producing the porous electrode substrate. Specifically provided are: a porous electrode substrate comprising a three-dimensional structure (Y-1) produced by bonding short carbon fibers through carbon and a three-dimensional structure (Y-2) produced by bonding short carbon fibers through carbon, wherein the three-dimensional structures (Y-1) and (Y-2) are layer stacked on and integrated with each other, the short carbon fibers form a three-dimensional entangled structure in the structure (Y-1), and the short carbon fibers do not form a three-dimensional entangled structure in the structure (Y-2); a process for producing the electrode base material; a precursor sheet for producing the electrode base material; a membrane-electrode assembly which involves the electrode base material; and a polymer electrolyte fuel cell.

公开(公告)号：US20120100456A1

公开(公告)日：2012-04-26

申请号：US13379368

申请日：2010-07-08

申请人： Kazuhiro Sumioka ,  Yoshihiro Sako

发明人： Kazuhiro Sumioka ,  Yoshihiro Sako

IPC分类号： H01M4/66 ,  H01M8/10 ,  H01M4/80 ,  H01M4/04 ,  H01M4/74

CPC分类号： H01M8/0234 ,  D21H13/50 ,  H01M2008/1095 ,  Y02P70/56

摘要： The present invention provides a porous electrode substrate that has low production cost, high mechanical strength, thickness precision, and surface smoothness, and sufficient gas permeability and electrical conductivity, and a method for producing the same. In the present invention, for example, a porous electrode substrate that includes short carbon fibers (A) joined together via three-dimensional mesh-like carbon fibers (B) is produced by a method including a step (1) of dispersing short carbon fibers (A), and short carbon fiber precursors (b) to be fibrillated by beating, to produce a precursor sheet; and a step (2) of subjecting the precursor sheet to carbonization treatment at a temperature of 1000° C. or higher.

摘要翻译： 本发明提供一种生产成本低，机械强度高，厚度精度高，表面平滑性好，透气性和导电性充分的多孔电极基板及其制造方法。 在本发明中，例如，通过包含以下步骤的方法制造包括通过三维网状碳纤维（B）接合在一起的短碳纤维（A））的多孔电极基板，该方法包括将短碳纤维 （A）和短碳纤维前体（b）通过打浆原纤化，以制备前体片; 以及在1000℃以上的温度下对前体片进行碳化处理的工序（2）。

公开(公告)号：US09325016B2

公开(公告)日：2016-04-26

申请号：US13882842

申请日：2011-10-26

申请人： Kazuhiro Sumioka ,  Yoshihiro Sako

发明人： Kazuhiro Sumioka ,  Yoshihiro Sako

IPC分类号： H01M4/86 ,  C04B35/83 ,  D21H13/50 ,  D21H27/00 ,  H01M4/88 ,  H01M4/96 ,  H01M8/02 ,  B32B18/00

CPC分类号： H01M4/8657 ,  B32B18/00 ,  C04B35/83 ,  C04B2235/526 ,  C04B2235/5264 ,  C04B2235/5268 ,  C04B2235/5272 ,  C04B2235/602 ,  C04B2235/652 ,  C04B2235/663 ,  C04B2237/385 ,  C04B2237/584 ,  D21H13/50 ,  D21H27/00 ,  H01M4/8605 ,  H01M4/8626 ,  H01M4/8803 ,  H01M4/8875 ,  H01M4/8885 ,  H01M4/96 ,  H01M8/0234 ,  H01M8/0245 ,  Y02E60/50 ,  Y02P70/56

摘要： Provided are: a porous electrode substrate which has excellent handling properties and surface smoothness and satisfactory gas permeability and electrical conductivity, and enables the reduction of damage to a polymer electrolyte membrane when integrated into a fuel cell; and a process for producing the porous electrode substrate. Specifically provided are: a porous electrode substrate comprising a three-dimensional structure (Y-1) produced by bonding short carbon fibers through carbon and a three-dimensional structure (Y-2) produced by bonding short carbon fibers through carbon, wherein the three-dimensional structures (Y-1) and (Y-2) are layer stacked on and integrated with each other, the short carbon fibers form a three-dimensional entangled structure in the structure (Y-1), and the short carbon fibers do not form a three-dimensional entangled structure in the structure (Y-2); a process for producing the electrode base material; a precursor sheet for producing the electrode base material; a membrane-electrode assembly which involves the electrode base material; and a polymer electrolyte fuel cell.

摘要翻译： 提供：具有优异的处理性能和表面平滑性以及令人满意的透气性和导电性的多孔电极基板，并且能够减少当集成到燃料电池中时对聚合物电解质膜的损伤; 以及多孔电极基板的制造方法。 具体提供的是：包含通过碳短短碳纤维结合而制造的三维结构（Y-1）和通过碳短接碳短纤维制造的三维结构（Y-2）的多孔电极基板，其中， 三维结构（Y-1）和（Y-2）是层叠在一起的一层，短碳纤维在结构（Y-1）中形成三维缠结结构，短碳纤维 在结构（Y-2）中不形成三维缠结结构; 电极基材的制造方法; 用于制造电极基材的前体片; 涉及电极基材的膜 - 电极组件; 和聚合物电解质燃料电池。

公开(公告)号：US08986907B2

公开(公告)日：2015-03-24

申请号：US13147814

申请日：2010-02-02

申请人： Kazuhiro Sumioka ,  Yoshihiro Sako

发明人： Kazuhiro Sumioka ,  Yoshihiro Sako

IPC分类号： H01M4/88 ,  H01M4/96 ,  H01M8/02 ,  D21H13/50 ,  D04H1/4242 ,  H01M4/86 ,  D04H1/4382 ,  H01B1/12 ,  H01M4/92 ,  H01M8/10 ,  D21H15/02

CPC分类号： H01M4/8605 ,  D04H1/4242 ,  D04H1/4382 ,  D21H13/50 ,  D21H15/02 ,  H01B1/122 ,  H01M4/926 ,  H01M8/0234 ,  H01M8/1007 ,  Y02E60/521 ,  Y10T29/49117 ,  Y10T428/30

摘要： Provided is a porous electrode substrate having high mechanical strength, good handling properties, high thickness precision, little undulation, and adequate gas permeability and conductivity. Also provided is a method for producing a porous electrode substrate at low costs. A porous electrode substrate is produced by joining short carbon fibers (A) via mesh-like of carbon fibers (B) having an average diameter of 4 μm or smaller. Further provided are a membrane-electrode assembly and a polymer electrolyte fuel cell that use this porous electrode membrane. A porous electrode substrate is obtained by subjecting a precursor sheet, in which short carbon fibers (A) and short carbon fiber precursors (b) having an average diameter of 5 μm or smaller have been dispersed, to carbonization treatment after optional hot press forming and optional oxidization treatment.

摘要翻译： 本发明提供机械强度高，处理性能好，厚度精度高，波动小，气体渗透性和导电性好的多孔电极基板。 还提供了一种以低成本制造多孔电极基板的方法。 通过使平均直径为4μm以下的碳纤维（B）的网状连接短碳纤维（A）来制造多孔电极基板。 还提供了使用该多孔电极膜的膜 - 电极组件和聚合物电解质燃料电池。 多孔电极基板是通过对其中分散有平均直径为5μm以下的短碳纤维（A）和短碳纤维前体（b）的前体片进行碳热处理而获得的，任选的热压成型后， 可选氧化处理。

公开(公告)号：US09343751B2

公开(公告)日：2016-05-17

申请号：US13390577

申请日：2010-11-22

申请人： Kazuhiro Sumioka ,  Yoshihiro Sako

发明人： Kazuhiro Sumioka ,  Yoshihiro Sako

IPC分类号： H01M8/02 ,  H01M8/10

CPC分类号： H01M8/0234 ,  H01M8/1004 ,  H01M2008/1095 ,  Y02E60/50 ,  Y02P70/56

摘要： The provision of a porous electrode substrate that has large sheet strength, low production costs, high handling properties, high thickness precision and surface smoothness, and sufficient gas permeability and electrical conductivity. A porous electrode substrate including a three-dimensional entangled structure including short carbon fibers (A) dispersed in a three-dimensional structure, joined together via three-dimensional mesh-like carbon fibers (B). A method for producing a porous electrode substrate, including a step (1) of producing a precursor sheet including short carbon fibers (A), and short carbon fiber precursors (b) and/or fibrillar carbon fiber precursors (b′) dispersed in a two-dimensional plane; a step (2) of subjecting the precursor sheet to entanglement treatment; and a step (3) of subjecting this sheet to carbonization treatment at 1000° C. or higher. It is preferable to include a step (4) of subjecting the sheet to hot press forming at lower than 200° C. between step (2) and step 3), and to further include a step (5) of subjecting the sheet after hot press forming to oxidation treatment at 200° C. or higher and lower than 300° C. between step (4) and step (3).

摘要翻译： 提供了具有大的片强度，低生产成本，高处理性，高厚度精度和表面平滑度以及足够的透气性和导电性的多孔电极基片。 包括分散在三维结构中的短碳纤维（A）的三维缠结结构的多孔电极基板，通过三维网状碳纤维（B）接合在一起。 一种多孔电极基板的制造方法，其特征在于，包括：制造分散在所述多孔电极基板中的短碳纤维（A）和短碳纤维前体（b）和/或原纤维碳纤维前体（b'）的前体片的工序（1） 二维平面; 对前体片进行缠结处理的步骤（2）; 以及在1000℃以上进行碳化处理的工序（3）。 优选包括在步骤（2）和步骤3）之间对片材进行低于200℃的热压成形的步骤（4）），并且还包括在热处理后对片材进行处理的步骤（5） 在步骤（4）和步骤（3）之间在200℃或更高和低于300℃下进行压制成型以进行氧化处理。

公开(公告)号：US08574758B2

公开(公告)日：2013-11-05

申请号：US13379368

申请日：2010-07-08

申请人： Kazuhiro Sumioka ,  Yoshihiro Sako

发明人： Kazuhiro Sumioka ,  Yoshihiro Sako

IPC分类号： H01M4/00

CPC分类号： H01M8/0234 ,  D21H13/50 ,  H01M2008/1095 ,  Y02P70/56

摘要： The present invention provides a porous electrode substrate that has low production cost, high mechanical strength, thickness precision, and surface smoothness, and sufficient gas permeability and electrical conductivity, and a method for producing the same. In the present invention, for example, a porous electrode substrate that includes short carbon fibers (A) joined together via three-dimensional mesh-like carbon fibers (B) is produced by a method including a step (1) of dispersing short carbon fibers (A), and short carbon fiber precursors (b) to be fibrillated by beating, to produce a precursor sheet; and a step (2) of subjecting the precursor sheet to carbonization treatment at a temperature of 1000° C. or higher.

摘要翻译： 本发明提供一种生产成本低，机械强度高，厚度精度高，表面平滑性好，透气性和导电性充分的多孔电极基板及其制造方法。 在本发明中，例如，通过包含以下步骤的方法制造包括通过三维网状碳纤维（B）接合在一起的短碳纤维（A））的多孔电极基板，该方法包括将短碳纤维 （A）和短碳纤维前体（b）通过打浆原纤化，以制备前体片; 以及在1000℃以上的温度下对前体片进行碳化处理的工序（2）。

公开(公告)号：US20120141911A1

公开(公告)日：2012-06-07

申请号：US13390577

申请日：2010-11-22

申请人： Kazuhiro Sumioka ,  Yoshihiro Sako

发明人： Kazuhiro Sumioka ,  Yoshihiro Sako

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

CPC分类号： H01M8/0234 ,  H01M8/1004 ,  H01M2008/1095 ,  Y02E60/50 ,  Y02P70/56

摘要： The provision of a porous electrode substrate that has large sheet strength, low production costs, high handling properties, high thickness precision and surface smoothness, and sufficient gas permeability and electrical conductivity. A porous electrode substrate including a three-dimensional entangled structure including short carbon fibers (A) dispersed in a three-dimensional structure, joined together via three-dimensional mesh-like carbon fibers (B). A method for producing a porous electrode substrate, including a step (1) of producing a precursor sheet including short carbon fibers (A), and short carbon fiber precursors (b) and/or fibrillar carbon fiber precursors (b′) dispersed in a two-dimensional plane; a step (2) of subjecting the precursor sheet to entanglement treatment; and a step (3) of subjecting this sheet to carbonization treatment at 1000° C. or higher. It is preferable to include a step (4) of subjecting the sheet to hot press forming at lower than 200° C. between step (2) and step 3), and to further include a step (5) of subjecting the sheet after hot press forming to oxidation treatment at 200° C. or higher and lower than 300° C. between step (4) and step (3).

摘要翻译： 提供了具有大的片强度，低生产成本，高处理性，高厚度精度和表面平滑度以及足够的透气性和导电性的多孔电极基片。 包括分散在三维结构中的短碳纤维（A）的三维缠结结构的多孔电极基板，通过三维网状碳纤维（B）接合在一起。 一种多孔电极基板的制造方法，其特征在于，包括：制造分散在所述多孔电极基板中的短碳纤维（A）和短碳纤维前体（b）和/或原纤维碳纤维前体（b'）的前体片的工序（1） 二维平面; 对前体片进行缠结处理的步骤（2）; 以及在1000℃以上进行碳化处理的工序（3）。 优选包括在步骤（2）和步骤3）之间对片材进行低于200℃的热压成形的步骤（4）），并且还包括在热处理后对片材进行处理的步骤（5） 在步骤（4）和步骤（3）之间在200℃或更高和低于300℃下进行压制成型以进行氧化处理。

公开(公告)号：US20110294036A1

公开(公告)日：2011-12-01

申请号：US13147814

申请日：2010-02-02

申请人： Kazuhiro Sumioka ,  Yoshihiro Sako

发明人： Kazuhiro Sumioka ,  Yoshihiro Sako

IPC分类号： H01M4/96 ,  H01M8/10 ,  H01M8/00

CPC分类号： H01M4/8605 ,  D04H1/4242 ,  D04H1/4382 ,  D21H13/50 ,  D21H15/02 ,  H01B1/122 ,  H01M4/926 ,  H01M8/0234 ,  H01M8/1007 ,  Y02E60/521 ,  Y10T29/49117 ,  Y10T428/30

摘要： Provided is a porous electrode substrate having high mechanical strength, good handling properties, high thickness precision, little undulation, and adequate gas permeability and conductivity. Also provided is a method for producing a porous electrode substrate at low costs. A porous electrode substrate is produced by joining short carbon fibers (A) via mesh-like of carbon fibers (B) having an average diameter of 4 μm or smaller. Further provided are a membrane-electrode assembly and a polymer electrolyte fuel cell that use this porous electrode membrane. A porous electrode substrate is obtained by subjecting a precursor sheet, in which short carbon fibers (A) and short carbon fiber precursors (b) having an average diameter of 5 μm or smaller have been dispersed, to carbonization treatment after optional hot press forming and optional oxidization treatment.

摘要翻译： 本发明提供机械强度高，处理性能好，厚度精度高，波动小，气体渗透性和导电性好的多孔电极基板。 还提供了一种以低成本制造多孔电极基板的方法。 通过使平均直径为4μm以下的碳纤维（B）的网状连接短碳纤维（A）来制造多孔电极基板。 还提供了使用该多孔电极膜的膜 - 电极组件和聚合物电解质燃料电池。 多孔电极基板是通过对其中分散有平均直径为5μm以下的短碳纤维（A）和短碳纤维前体（b）的前体片进行碳热处理而获得的，任选的热压成型后， 可选氧化处理。