公开(公告)号：EP2506352B1

公开(公告)日：2017-01-04

申请号：EP10833195.0

申请日：2010-11-24

申请人： Mitsubishi Rayon Co., Ltd.

发明人： SUMIOKA, Kazuhiro ,  TATSUNO, Hiroto

IPC分类号： H01M8/10 ,  H01M4/86 ,  H01M4/88 ,  H01M8/02 ,  D21H13/50 ,  D04H1/46 ,  D04H1/48 ,  D21H13/12 ,  D21H15/10 ,  H01M4/92

CPC分类号： H01M8/0243 ,  D04H1/4242 ,  D04H1/46 ,  D04H1/488 ,  D21H13/12 ,  D21H13/50 ,  D21H15/10 ,  H01M4/8605 ,  H01M4/8817 ,  H01M4/926 ,  H01M8/0234 ,  H01M8/0239 ,  H01M8/1007 ,  H01M2008/1095 ,  Y02P70/56

公开(公告)号：EP2506352A1

公开(公告)日：2012-10-03

申请号：EP10833195.0

申请日：2010-11-24

申请人： Mitsubishi Rayon Co., Ltd.

发明人： SUMIOKA, Kazuhiro ,  TATSUNO, Hiroto

IPC分类号： H01M4/88 ,  B01J23/42 ,  H01M4/96 ,  H01M8/10

CPC分类号： H01M8/0243 ,  D04H1/4242 ,  D04H1/46 ,  D04H1/488 ,  D21H13/12 ,  D21H13/50 ,  D21H15/10 ,  H01M4/8605 ,  H01M4/8817 ,  H01M4/926 ,  H01M8/0234 ,  H01M8/0239 ,  H01M8/1007 ,  H01M2008/1095 ,  Y02P70/56

摘要： The present invention provides a porous electrode substrate that has high sheet strength, low production cost, and sufficient gas permeability and electrical conductivity, and a method for producing the same. In the present invention, the porous electrode substrate is produced by producing a precursor sheet including short carbon fibers (A), and one or more types of short precursor fibers (b) that undergo oxidation and/or one or more types of fibrillar precursor fibers (b') that undergo oxidation, all of which are dispersed in a two-dimensional plane, subjecting the precursor sheet to entanglement treatment to form a three-dimensional entangled structure, then impregnating the precursor sheet with carbon powder and fluorine-based resin, and further heat treating the precursor sheet at a temperature of 150°C or higher and lower than 400°C. This porous electrode substrate includes a three-dimensional entangled structure including short carbon fibers (A) dispersed in a three-dimensional structure, joined together via oxidized fibers (B), short carbon fibers (A) and oxidized fibers (B) being further joined together via carbon powder and fluorine-based resin.

公开(公告)号：EP2669977A1

公开(公告)日：2013-12-04

申请号：EP12739680.2

申请日：2012-01-20

申请人： Mitsubishi Rayon Co., Ltd.

发明人： TATSUNO, Hiroto ,  SUMIOKA, Kazuhiro ,  SAMEJIMA, Tadao

IPC分类号： H01M4/88 ,  C04B35/80 ,  C04B35/83 ,  C04B38/00 ,  D21H13/50 ,  D21H19/24 ,  D21H25/04 ,  H01M4/96 ,  H01M8/10

CPC分类号： H01M4/8885 ,  C04B35/83 ,  C04B38/0022 ,  C04B2111/00853 ,  C04B2235/48 ,  C04B2235/5248 ,  C04B2235/526 ,  C04B2235/5264 ,  D21H13/50 ,  D21H17/46 ,  D21H19/24 ,  D21H25/06 ,  H01M4/8605 ,  H01M4/8652 ,  H01M4/8807 ,  H01M4/8875 ,  H01M4/96 ,  H01M8/0234 ,  H01M2008/1095 ,  Y02P70/56

摘要： According to the present invention, a porous electrode substrate with greater sheet strength, lower production cost, and excellent gas permeability and conductivity as well as its manufacturing method are provided. Also provided are a precursor sheet for forming such a substrate, and a membrane electrode assembly and a polymer electrolyte fuel cell containing such a substrate. The method for manufacturing such a porous electrode substrate includes the following steps [1] ∼ [3]: [1] a step for manufacturing a sheet material in which short carbon fibers (A) are dispersed; [2] a step for manufacturing a precursor sheet by adding a water-soluble phenolic resin and/or water-dispersible phenolic resin to the sheet material; and [3] a step for carbonizing the precursor sheet at a temperature of 1000°C or higher. The present invention also relates to a porous electrode substrate obtained by such a manufacturing method as well as a precursor sheet to be used for manufacturing the substrate, a membrane electrode assembly and a polymer electrolyte fuel cell.

摘要翻译： 根据本发明，提供了具有更大的板强度，更低的生产成本和优异的透气性和导电性的多孔电极基板及其制造方法。 还提供了用于形成这种基板的前体片，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。 制造这种多孔电极基板的方法包括以下步骤[1]¼[3]：[1]一种制造其中分散短碳纤维（A）的片材的步骤; [2]通过向片材中加入水溶性酚醛树脂和/或水分散性酚醛树脂来制造前体片的步骤; 和[3]在1000℃以上的温度下碳化前体片的工序。 本发明还涉及通过这种制造方法获得的多孔电极基板以及用于制造基板，膜电极组件和聚合物电解质燃料电池的前体片。