公开(公告)号：EP1990855A1

公开(公告)日：2008-11-12

申请号：EP07737753.9

申请日：2007-02-27

申请人： Nippon Steel Corporation ,  Sintobrator, Ltd.

发明人： TANAKA, Koki ,  IKEMATSU, Youichi ,  KIHIRA, Hiroshi ,  KANEKO, Michio ,  HISADA, Wataru ,  ITOH, Tamotsu

IPC分类号： H01M8/02 ,  B24C1/00 ,  B24C1/10 ,  B24C11/00 ,  H01M8/10

CPC分类号： H01M8/0228 ,  H01M8/0206 ,  H01M8/0208 ,  H01M8/021 ,  H01M8/0213 ,  H01M2008/1095 ,  Y02P70/56

摘要： The present invention provides a separator for a solid polymer type fuel cell superior in low contact resistance of the fuel cell separator surface with carbon paper and flatness and a method of production of the same, that is, a separator for a solid polymer type fuel cell comprising a substrate of stainless steel or titanium or a titanium alloy having a surface layer part on which conductive compound particles are fixed, wherein said conductive compound particles are comprised of one or more types of metal borides, metal carbides, and metal nitrides with an average particle size of 0.01 to 20 µm, said conductive compound particles are present in a region from said substrate surface to a depth of 10 µm, and a distribution of concentration of the metal element forming the conductive compound in said region satisfies relations between a concentration C of the metal element forming the conductive compound and a depth x from the substrate surface shown by equation (C = A·exp(-x/t)+B) and equation (10≤A≤90, -4.0≤B≤1.0, 0.5≤t≤4.0).

摘要翻译： 本发明提供一种固体聚合物型燃料电池用隔膜，该隔膜用于具有碳纸和平坦度的燃料电池隔板表面的低接触电阻及其制造方法，即固体聚合物型燃料电池用隔板 包括不锈钢或钛的基板或具有固定有导电化合物颗粒的表面层部分的钛合金，其中所述导电化合物颗粒由一种或多种金属硼化物，金属碳化物和具有平均值的金属氮化物 所述导电化合物颗粒存在于从所述基板表面到10μm深度的区域中，并且在所述区域中形成导电化合物的金属元素的浓度分布满足浓度C 形成导电化合物的金属元素和由式（1）表示的衬底表面的深度x（C = A·exp（-x / t）+ B）和方程式2（10‰A‰90，-4.0‰B‰1.0，0.5‰t‰4.0）。

公开(公告)号：EP1990855B1

公开(公告)日：2011-09-21

申请号：EP07737753.9

申请日：2007-02-27

申请人： Nippon Steel Corporation

发明人： TANAKA, Koki ,  IKEMATSU, Youichi ,  KIHIRA, Hiroshi ,  KANEKO, Michio ,  HISADA, Wataru ,  ITOH, Tamotsu

IPC分类号： H01M8/02 ,  B24C1/00 ,  B24C1/10 ,  B24C11/00 ,  H01M8/10

CPC分类号： H01M8/0228 ,  H01M8/0206 ,  H01M8/0208 ,  H01M8/021 ,  H01M8/0213 ,  H01M2008/1095 ,  Y02P70/56

摘要： This invention provides a separator for a solid polymer fuel cell in which the surface of the fuel cell separator has low resistance of contact with carbon paper and has excellent flatness, and a method for manufacturing the same. The separator for a solid polymer fuel cell comprises a base material of stainless steel or titanium or titanium alloy having a surface layer part with electroconductive compound particles fixed thereonto. The electroconductive compound particles are formed of one or at least two materials selected from metal borides, metal carbides, and metal nitrides, having an average particle diameter of 0.01 to 20 µm. The electroconductive compound particles are present in a region extended from the base material surface to a depth of 10 µm from the surface. In the region, the concentration distribution of the metal element constituting the electroconductive compound satisfies the requirement that the following relationship between the concentration C of the metal element constituting the electroconductive compound and the depth x from the base material surface is satisfied: formula (C = A ⋅ exp(-x/t) + B) and formula (10 ≤ A ≤ 90, -4.0 ≤ B ≤ 1.0 and 0.5 ≤ t ≤ 4.0).