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公开(公告)号：EP1357617A4
公开(公告)日：2008-03-26
申请号：EP02702748
申请日：2002-03-05
发明人： YASUMOTO EIICHI , YOSHIDA AKIHIKO , UCHIDA MAKOTO , MORITA JUNJI , SUGAWARA YASUSHI , GYOTEN HISAAKI , YAMAMOTO MASAO , SAKAI OSAMU , NIIKURA JUNJI
CPC分类号： H01M4/8828 , H01M4/8605 , H01M4/8807 , H01M4/8882 , H01M4/926 , H01M8/1004 , H01M2300/0082
摘要： Because of its inability to uniformly control water content over the entire surface of a membrane electrode joining element, a polyelectrolyte fuel cell is difficult to keep a constant voltage over an extended time. A conductive polymer layer consisting of conductive particles and a polymer material is formed on the top of a porous material of carbon fibers, and a catalyst layer consisting of platinum-carrying carbon particles is disposed on the conductive polymer layer to form a gas diffusion electrode. The conductive polymer layer has conductive particles different in particle size mixed therein, with the mixed amount of conductive particles small in particle size decreasing from one end toward the other end of the gas diffusion electrode.
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2.发明公开METHOD FOR RESORTING CHARACTERISTICS OF POLYMER ELECTROLYTE FUEL CELL 审中-公开方法恢复CHARAKTERISTIKAEN聚合物电解质燃料电池
公开(公告)号：EP1237219A4
公开(公告)日：2004-05-06
申请号：EP00961038
申请日：2000-09-14
发明人： GYOTEN HISAAKI , KANBARA TERUHISA , UCHIDA MAKOTO , HATOH KAZUHITO , SAKAI OSAMU
CPC分类号： H01M8/0662 , H01M8/04104 , H01M8/04223 , H01M8/04679 , H01M8/0488 , H01M8/0491 , H01M8/04952 , H01M2300/0082
摘要： The present invention restores the performance of a fuel cell by: operating the cell in a loaded current mode different from that of a normal operation for a predetermined time; supplying an oxidant gas and a fuel gas to an anode and a cathode respectively and outputting a current from a cell body with the polarity being inverted; supplying a pressurized gas to at least one of the cathode and anode in an amount not less than 1.5 times as much as that in the normal operation or supplying oxygen to the cathode; or injecting a cleaning solution into the cathode and anode through a gas flow path. Consequently, it is possible to effectively restore a degraded performance of a polymer electrolyte fuel cell caused by a long operation.
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公开(公告)号：EP1306913A4
公开(公告)日：2006-03-22
申请号：EP01954442
申请日：2001-08-03
发明人： UCHIDA MAKOTO , SUGAWARA YASUSHI , YASUMOTO EIICHI , YOSHIDA AKIHIKO , MORITA JUNJI , YAMAMOTO MASAO , KOSAKO SHINYA , SAKAI OSAMU , HORI YOSHIHIRO
CPC分类号： H01M4/8605 , H01M4/8807 , H01M4/8828 , H01M4/921 , H01M4/926 , H01M8/0234 , Y02P70/56 , Y10T29/49115
摘要： A polyelectrolyte fuel cell having a gas channel, a proton channel and an electron channel formed in the vicinity of a pole in a catalyst layer to increase a reaction area, and comprising a hydrogen ion conductive polyelectrolyte film, and a pair of electrodes each having a catalyst layer sandwiching the hydrogen ion conductive polyelectrolyte film and a gas diffusion layer in contact with the catalyst layer, wherein the catalyst layer of at least one electrode contains carbon particles each supporting a noble-metal catalyst, and the carbon particles consist of at least two types of carbon particles being in mutually different dispersion conditions and having a hydrogen ion conductive polyelectrolyte adsorbed thereto.
摘要翻译： 本发明通过在催化剂层内形成非常接近的气体通道，质子通道和电子通道来提供具有增加的反应面积的聚合物电解质燃料电池。 该聚合物电解质燃料电池包括氢离子导电聚合物电解质膜; 以及一对电极，其具有将氢离子导电性聚合物电解质膜夹在其间的催化剂层和与催化剂层接触的气体扩散层，其中，至少一个电极的催化剂层包含负载贵金属催化剂的碳粒子， 并且所述碳粒子包含以相互不同的分散状态吸附氢离子导电性聚合物电解质的至少2种碳粒子。
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4.发明公开POLYMER ELECTROLYTIC FUEL CELL AND METHOD FOR PRODUCING THE SAME 有权聚合物 - 丙烯酸丁酯共聚物（HERSTELLUNGSVERFAHRENDAFÜR）
公开(公告)号：EP1231656A4
公开(公告)日：2004-05-19
申请号：EP00961147
申请日：2000-09-20
发明人： SAKAI OSAMU , GYOTEN HISAAKI , KUSAKABE HIROKI , YASUMOTO EIICHI , SUGAWARA YASUSHI , KANBARA TERUHISA , YOSHIDA AKIHIKO , UCHIDA MAKOTO , MORITA JUNJI
CPC分类号： H01M4/8657 , H01M4/8636 , H01M8/0234 , H01M8/0245 , H01M8/1004 , H01M8/1007 , H01M8/2415 , H01M2250/20 , H01M2250/402 , H01M2300/0082 , Y02B90/12 , Y02E60/521 , Y02P70/56 , Y02P90/40 , Y02T90/32 , Y10T29/49108
摘要： A polymer electrolyte fuel cell is provided comprising: a hydrogen ion conductive polymer electrolyte membrane; an anode and a cathode sandwiching the hydrogen ion conductive polymer electrolyte membrane; an anode side electroconductive separator having a gas channel for supplying a fuel gas to the anode; a cathode side electroconductive separator having a gas channel for supplying an oxidant gas to the cathode; characterized in that the anode and the cathode comprise a gas diffusion layer and a catalyst layer formed on the gas diffusion layer at the side in contact with the hydrogen ion conductive polymer electrolyte membrane, the catalyst layer has catalyst particles and a hydrogen ion conductive polymer electrolyte, and at least either of hydrogen ion conductivity and gas permeability of at least either of the anode and the cathode varies in a thickness direction of the anode or the cathode.
摘要翻译： 提供了一种聚合物电解质燃料电池，包括：氢离子导电聚合物电解质膜; 夹持氢离子导电聚合物电解质膜的阳极和阴极; 阳极侧导电隔板，具有用于向阳极供应燃料气体的气体通道; 阴极侧导电隔板，具有用于向阴极供给氧化剂气体的气体通道; 其特征在于，阳极和阴极包括气体扩散层和形成在与氢离子导电聚合物电解质膜接触的一侧的气体扩散层上的催化剂层，催化剂层具有催化剂颗粒和氢离子导电聚合物电解质 并且至少阳极和阴极中的任一个的氢离子传导性和气体渗透性中的至少一种在阳极或阴极的厚度方向上变化。
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公开(公告)号：EP1227531A4
公开(公告)日：2007-06-27
申请号：EP00956826
申请日：2000-08-30
发明人： GYOTEN HISAAKI , SAKAI OSAMU , HATOH KAZUHITO , NIIKURA JUNJI , OHARA HIDEO , NISHIDA KAZUFUMI
CPC分类号： H01M8/0226 , H01M8/0206 , H01M8/021 , H01M8/0213 , H01M8/0221 , H01M8/0228 , H01M2300/0082 , Y02P70/56
摘要： Generally a polymer electrolyte fuel cell has an MEA comprising a polymer electrolyte film and a pair of gas diffusing electrodes sandwiching the film. A conductive separator is provided on the outer face of the MEA. Though a conductive separator is made of a carbonaceous material, use of a metallic base material has been studied from the viewpoint of the manufacturing cost. Such a conductive separator of a metallic base material is required to have a strong corrosion resistance against long-time exposure to high humidity gas and not to increase its contact resistance with the MEA. A polymer electrolyte fuel cell of the invention includes a conductive separator comprising a metallic base (1) and a conductive resin layer (2) provided on the metallic base (1), made of a resin (2) having a water-repellent or basic group and a conductive particulate material (3), and so disposed in contact with an MEA, thus meeting the above requirement.
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公开(公告)号：EP1187240A4
公开(公告)日：2007-03-28
申请号：EP00917334
申请日：2000-04-17
发明人： HATOH KAZUHITO , SAKAI OSAMU , OHARA HIDEO , NIIKURA JUNJI , GYOTEN HISAAKI , MATSUMOTO TOSHIHIRO , KANBARA TERUHISA
CPC分类号： H01M8/04119 , H01M8/04007 , H01M8/04029 , H01M8/04089 , H01M8/04328 , H01M8/04335 , H01M8/04365 , H01M8/04388 , H01M8/04395 , H01M8/045 , H01M8/04507 , H01M8/04589 , H01M8/04708 , H01M8/04716 , H01M8/04723 , H01M8/04753 , H01M8/04768 , H01M8/04835 , H01M8/04843 , H01M8/0491 , H01M8/04992 , H01M8/1007 , H01M2300/0082
摘要： A method of operating a polymer electrolytic fuel cell, wherein its operating condition is regulated for an optimal one which is represented by a function of a gas flow rate and the difference between a saturated steam pressure and an actual steam pressure, by regulating an in-plane temperature distribution obtained by a cooling water flow direction and by the regulations of a cooling water inlet temperature and a cooling water flow rate, a gas supply amount, and a supplied moisture amount, and a current density, the method resolving conventional problems with a polymer electrolytic fuel cell that a performance distribution occurs in a single plane of a cell and a stable operation is difficult when a performance distribution is significant.
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公开(公告)号：EP1244166A4
公开(公告)日：2006-10-04
申请号：EP00964762
申请日：2000-10-10
发明人： HORI YOSHIHIRO , YONAMINE TAKESHI , SAKAI OSAMU , HOSAKA MASATO
CPC分类号： H01M8/0226 , H01M8/0206 , H01M8/0215 , H01M8/0228 , H01M2300/0082
摘要： A polymer electrolytic fuel cell comprises a hydrogen-ion-conductive polymer electrolytic film, a pair of electrodes sandwiching the film, a conductive separator plate having a gas passage for supplying fuel to one of the electrodes, and a conductive separator plate having a gas passage for supplying an oxidizer to the other electrode. Conventionally, a conductive separator plate is made of a carbonaceous material, and therefore the costs such as the fabrication cost are difficult to reduce, and a metallic plate is used on trial instead of a carbonaceous plate. However the metallic plate is exposed to a hot oxidizing atmosphere, and as a result the metallic plate is corroded after a long use, lowering the power generation efficiency gradually. According to the invention, the metallic conductive separator plate is a type in which a conductive film containing conductive particles and glass is formed on a surface having a gas passage. Thus, the corrosion of the metallic plate is suppressed and the degradation of the power generation efficiency after long use is also suppressed.
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8.发明公开ELECTROLYTE FILM ELECTRODE UNION, FUEL CELL CONTAINING THE SAME AND PROCESS FOR PRODUCING THEM 有权电解质薄膜电极ASSOCIATION含燃料电池及其制造工艺
公开(公告)号：EP1505673A4
公开(公告)日：2006-07-19
申请号：EP03712947
申请日：2003-03-25
发明人： YOSHIDA AKIHIKO , HORI YOSHIHIRO , UCHIDA MAKOTO , YASUMOTO EIICHI , TAKEBE YASUO , SAKAI OSAMU , KOSAKO SHINYA , YONAMINE TAKESHI , YAMAUCHI MASAKI , SUGAWARA YASUSHI , MORITA JUNJI
IPC分类号： H01M4/86 , D03D1/00 , D03D15/00 , D03D15/12 , H01M4/88 , H01M4/92 , H01M4/96 , H01M8/02 , H01M8/10
CPC分类号： H01M8/0234 , D03D15/00 , D03D15/0083 , D10B2101/12 , D10B2201/24 , D10B2321/10 , D10B2401/063 , D10B2401/16 , H01M4/8605 , H01M4/92 , H01M4/96 , H01M8/0247 , H01M8/1004 , Y02P70/56
摘要： By using a gas diffusion layer for a fuel cell comprising a fabric comprising a warp thread and a weft thread which are made of carbon fiber, wherein the distance X between adjacent intersections where the warp and weft threads cross each other and the thickness Y of the fabric satisfy the equation: 1.4 In order to further prevent the piercing of the polymer electrolyte membrane by the carbon fibers of the gas diffusion layer substrate, the rough surface of the carbon fabric is smoothed by:(1) applying a clamping pressure of 1 to 20 kgf/cm to the contact area between each electrode and each conductive separator plate of the fuel cell; or (2) heating the gas diffusion layer surface before the gas diffusion layer is disposed onto the polymer electrolyte membrane.
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公开(公告)号：EP1229600A4
公开(公告)日：2006-05-17
申请号：EP00955010
申请日：2000-08-24
发明人： SUGAWARA YASUSHI , GYOTEN HISAAKI , UCHIDA MAKOTO , YASUMOTO EIICHI , KANBARA TERUHISA , MORITA JUNJI , HORI YOSHIHIRO , YOSHIDA AKIHIKO , WAKITA HIDENOBU , KUSAKABE HIROKI , HOSAKA MASATO , SAKAI OSAMU
CPC分类号： H01M4/8636 , H01M4/8605 , H01M8/0234 , H01M8/1004 , H01M2008/1095
摘要： A polymer electrolyte type fuel cell characterized in that a cathode and an anode consist of catalyst particles, hydrogen-ion-conductive polymer electrolytes, conductive porous base materials and water repellent agents, and the water repellency of at least one of the cathode and anode varies in a thickness direction or a surface direction. Such a position-dependent change in the water repellency level of an anode or cathode can provide an excellent polymer electrolyte type fuel cell having high discharge characteristics, especially, high current-voltage characteristics in a high current density region.
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公开(公告)号：EP1383184A4
公开(公告)日：2008-04-16
申请号：EP02720565
申请日：2002-04-22
发明人： SAKAI OSAMU , NIIKURA JUNJI , KANBARA TERUHISA , YAMAMOTO MASAO , YOSHIDA AKIHIKO , UCHIDA MAKOTO , YASUMOTO EIICHI , MORITA JUNJI , SUGAWARA YASUSHI
CPC分类号： H01M4/8807 , H01M4/8605 , H01M4/8821 , H01M8/04291 , H01M8/1004 , Y02P70/56
摘要： The present invention provides an electrode for a fuel cell, which prevents electrode exfoliation at a manufacturing process by optimizing a water repellent material to be added to a gas diffusion layer, and which has a high discharge performance at a low cost. This electrode comprises a gas diffusion layer and a catalyst layer formed at a surface thereof to contact a polymer electrolyte membrane, wherein the gas diffusion layer contains a fibrillated water repellent material, and is subjected to heat treatment at a temperature of the melting point or below thereof.
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