公开(公告)号：US08399144B2

公开(公告)日：2013-03-19

申请号：US12336149

申请日：2008-12-16

申请人： Hideyuki Ueda ,  Hiroaki Matsuda ,  Takashi Akiyama

发明人： Hideyuki Ueda ,  Hiroaki Matsuda ,  Takashi Akiyama

IPC分类号： H01M8/10

CPC分类号： H01M4/8605 ,  H01M4/881 ,  H01M8/04156 ,  H01M8/1004 ,  H01M8/1011 ,  Y02E60/523

摘要： A membrane-electrode assembly for a direct oxidation fuel cell includes an electrolyte membrane, and an anode and a cathode sandwiching said electrolyte membrane. The cathode includes a catalyst layer in contact with the electrolyte membrane and a diffusion layer formed on the catalyst layer, and the catalyst layer contains 2 to 20% by volume of pores. A direct oxidation fuel cell including this membrane-electrode assembly has excellent power generating performance and durability.

摘要翻译： 用于直接氧化燃料电池的膜 - 电极组件包括电解质膜和夹着所述电解质膜的阳极和阴极。 阴极包括与电解质膜接触的催化剂层和形成在催化剂层上的扩散层，催化剂层含有2〜20体积％的孔。 包括该膜 - 电极组件的直接氧化燃料电池具有优异的发电性能和耐久性。

公开(公告)号：US08076040B2

公开(公告)日：2011-12-13

申请号：US12116675

申请日：2008-05-07

申请人： Hideyuki Ueda ,  Masahiro Takada

发明人： Hideyuki Ueda ,  Masahiro Takada

IPC分类号： H01M8/02

CPC分类号： H01M8/1009 ,  H01M8/0258 ,  H01M8/0263 ,  H01M8/04082 ,  H01M8/04197

摘要： A direct oxidation fuel cell of this invention has at least one unit cell including: a membrane-electrode assembly comprising an electrolyte membrane sandwiched between an anode and a cathode, each of the anode and the cathode including a catalyst layer and a diffusion layer; an anode-side separator with a fuel flow channel for supplying a fuel to the anode; and a cathode-side separator with an oxidant flow channel for supplying an oxidant containing oxygen gas to the cathode. The fuel flow channel and the oxidant flow channel are so structured that the concentration of the oxygen gas in the oxidant flow channel is higher at a part opposing an upstream part of the fuel flow channel than at a part opposing a downstream part of the fuel flow channel.

摘要翻译： 本发明的直接氧化燃料电池具有至少一个单电池，包括：膜 - 电极组件，包括夹在阳极和阴极之间的电解质膜，阳极和阴极中的每一个包括催化剂层和扩散层; 具有用于向阳极供应燃料的燃料流动通道的阳极侧分离器; 以及阴极侧隔板，其具有用于向阴极供给含有氧气的氧化剂的氧化剂流路。 燃料流动通道和氧化剂流动通道的结构使得氧化剂流动通道中的氧气的浓度在与燃料流动通道的下游部分相对的部分处与燃料流动通道的上游部分相对的部分较高 渠道。

公开(公告)号：US07803490B2

公开(公告)日：2010-09-28

申请号：US11312369

申请日：2005-12-21

申请人： Hideyuki Ueda ,  Shinsuke Fukuda

发明人： Hideyuki Ueda ,  Shinsuke Fukuda

IPC分类号： H01M4/00

CPC分类号： H01M8/04186 ,  H01M4/8605 ,  H01M8/0234 ,  H01M8/0239 ,  H01M8/04197 ,  H01M8/1011 ,  Y02E60/523

摘要： A direct methanol fuel cell of the present invention includes a unit cell having an electrolyte membrane, an anode on one surface of the electrolyte membrane, and a cathode on the other surface of the electrolyte membrane. The anode includes an anode catalyst layer and an anode diffusion layer. The anode catalyst layer is in contact with a surface of the electrolyte membrane. The anode diffusion layer is in contact with a surface of the anode catalyst layer opposite to the surface of the anode catalyst layer in contact with the electrolyte membrane. A methanol flux value JGDL of the anode diffusion layer and a methanol flux value JPEM of the electrolyte membrane satisfy the following relations: JGDL=1×10−5 to 5×10−4 mol/(cm2·min.),  (i) and JPEM×JGDL≦1×10−8 [mol/(cm2·min.)]2.  (ii)

摘要翻译： 本发明的直接甲醇燃料电池包括具有电解质膜的单元电池，电解质膜的一个表面上的阳极和电解质膜的另一个表面上的阴极。 阳极包括阳极催化剂层和阳极扩散层。 阳极催化剂层与电解质膜的表面接触。 阳极扩散层与阳极催化剂层的与电解质膜接触的与阳极催化剂层的表面相反的表面接触。 阳极扩散层的甲醇流量值JGDL和电解质膜的甲醇通量值JPEM满足以下关系：JGDL = 1×10-5〜5×10-4mol /（cm2·min。），（i） 和JPEM×JGDL＆nlE; 1×10 -8 [mol /（cm 2·min。）] 2。 （ii）

公开(公告)号：US20100003561A1

公开(公告)日：2010-01-07

申请号：US12498742

申请日：2009-07-07

申请人： Hiroaki MATSUDA ,  Hideyuki Ueda

发明人： Hiroaki MATSUDA ,  Hideyuki Ueda

IPC分类号： H01M8/04

CPC分类号： H01M8/04492 ,  H01M8/04231

摘要： A fuel cell system includes a fuel cell stack for generating power and power generation control means. The fuel cell stack has at least one cell that includes a cathode to which an oxidant is supplied, an anode to which a fuel is supplied, and a polymer electrolyte membrane sandwiched between the cathode and the anode. The power generation control means has dryness degree determination means for determining the degree of dryness of the fuel cell stack based on shut-down period. When the shut-down period is shorter than a predetermined period of time, the power generation control means supplies a gas for drying to the cathode for a predetermined period of time, to remove water remaining in the cathode. When the shut-down period is equal to or longer than the predetermined period of time, such a drying operation is not performed.

摘要翻译： 燃料电池系统包括用于产生电力和发电控制装置的燃料电池堆。 燃料电池堆具有至少一个电池，其包括供给氧化剂的阴极，供给燃料的阳极和夹在阴极和阳极之间的高分子电解质膜。 发电控制装置具有干燥度确定装置，用于基于关闭时间确定燃料电池堆的干燥程度。 当关闭期间短于预定时间时，发电控制装置将用于干燥的气体预定时间提供给阴极，以除去残留在阴极中的水。 当关闭期间等于或长于预定时间段时，不执行这种干燥操作。

公开(公告)号：US20090280377A1

公开(公告)日：2009-11-12

申请号：US12431270

申请日：2009-04-28

申请人： Hideyuki Ueda ,  Hiroaki Matsuda

发明人： Hideyuki Ueda ,  Hiroaki Matsuda

IPC分类号： H01M8/10

CPC分类号： H01M8/0245 ,  H01M4/861 ,  H01M4/8642 ,  H01M4/8657 ,  H01M8/0234 ,  H01M8/0239 ,  H01M8/0243 ,  H01M8/04156 ,  H01M8/1009 ,  H01M8/1011 ,  H01M2004/8689 ,  H01M2250/30 ,  Y02B90/18 ,  Y02E60/523

摘要： The direct oxidation fuel cell of the invention includes at least one unit cell, the unit cell including: a membrane-electrode assembly including an anode, a cathode, and an electrolyte membrane interposed therebetween; an anode-side separator; and a cathode-side separator. The cathode includes a first cathode catalyst layer, a diffusion layer being in contact with the cathode-side separator, and an intermediate layer disposed therebetween. The intermediate layer includes a second cathode catalyst layer and a porous composite layer, the porous composite layer containing a hydrophobic material and an electron-conductive material. The anode-side separator has a fuel flow channel, and the cathode-side separator has an oxidant flow channel. At least a portion of the intermediate layer facing the upstream portion of the fuel flow channel includes the second cathode catalyst layer, and at least portions of the intermediate layer facing the midstream and downstream portions of the fuel flow channel include the porous composite layer.

摘要翻译： 本发明的直接氧化型燃料电池包括至少一个单电池，所述单电池包括：膜电极组件，其包括阳极，阴极和插入其间的电解质膜; 阳极侧隔板; 和阴极侧隔板。 阴极包括第一阴极催化剂层，与阴极侧隔板接触的扩散层和设置在阴极侧隔板之间的中间层。 中间层包括第二阴极催化剂层和多孔复合层，多孔复合层含有疏水材料和电子传导材料。 阳极侧隔板具有燃料流路，阴极侧隔板具有氧化剂流路。 面向燃料流动通道的上游部分的中间层的至少一部分包括第二阴极催化剂层，并且面向燃料流动通道的中游和下游部分的中间层的至少部分包括多孔复合层。

公开(公告)号：US20080274390A1

公开(公告)日：2008-11-06

申请号：US12216844

申请日：2008-07-11

申请人： Hideyuki Ueda ,  Chao-Yang Wang

发明人： Hideyuki Ueda ,  Chao-Yang Wang

IPC分类号： H01M2/00

CPC分类号： H01M4/8657 ,  H01M4/8605 ,  H01M4/8636 ,  H01M8/0234 ,  H01M8/0239 ,  H01M8/0243 ,  H01M8/0245 ,  H01M8/0258 ,  H01M8/0263 ,  H01M8/0265 ,  H01M8/04291 ,  H01M8/1009 ,  Y02E60/523

摘要： An anode electrode for use in a fuel cell comprises a stacked structure including, in sequence: a catalyst layer, a hydrophobic, microporous layer (“MPL”), a porous gas diffusion layer (“GDL”), and an anode plate with at least one recessed fuel supply-fuel/gas exhaust channel formed in a surface thereof facing the GDL, wherein the stacked structure further comprises at least one hydrophobic region aligned with the at least one recessed channel. The electrode is useful in direct oxidation fuel cells and systems, such as direct methanol fuel cells operating with highly concentrated liquid fuel.

公开(公告)号：US20070224486A1

公开(公告)日：2007-09-27

申请号：US11688953

申请日：2007-03-21

申请人： Hideyuki UEDA ,  Takashi AKIYAMA

发明人： Hideyuki UEDA ,  Takashi AKIYAMA

IPC分类号： H01M8/02 ,  H01M8/10 ,  H01M4/86 ,  H01M4/88

CPC分类号： H01M4/881 ,  H01M8/0273 ,  H01M8/1004 ,  H01M8/1009 ,  H01M8/1011 ,  H01M8/1023 ,  H01M8/1025 ,  H01M8/1039 ,  Y02E60/523 ,  Y02P70/56

摘要： A direct oxidation fuel cell includes at least one unit cell. The at least one unit cell includes: an anode; a cathode; a hydrogen-ion conductive polymer electrolyte membrane interposed between the anode and the cathode; an anode-side separator having a flow channel for supplying and discharging a fuel to and from the anode; and a cathode-side separator having a gas flow channel for supplying and discharging an oxidant gas to and from the cathode. A water-repellent layer is formed on each side of the electrolyte membrane so as to surround the anode or the cathode. When the MEA is hydrated or when a liquid fuel is supplied to the cell for power generation, the part of the electrolyte membrane surrounding the electrodes is prevented from becoming swollen or deformed rapidly. It is therefore possible to ensure adhesion of the electrodes to the electrolyte membrane.

摘要翻译： 直接氧化燃料电池包括至少一个单电池。 所述至少一个单电池包括：阳极; 阴极 介于阳极和阴极之间的氢离子导电聚合物电解质膜; 阳极侧隔板，具有用于向阳极供给和排出燃料的流路; 以及阴极侧隔板，其具有用于向阴极供给和排出氧化剂气体的气体流路。 在电解质膜的两面上形成防水层，以包围阳极或阴极。 当MEA水合时或者当液体燃料供应到电池用于发电时，围绕电极的电解质膜的部分被防止变得迅速膨胀或变形。 因此，可以确保电极与电解质膜的附着。

公开(公告)号：US20070224468A1

公开(公告)日：2007-09-27

申请号：US11752559

申请日：2007-05-23

申请人： Takashi AKIYAMA ,  Hideyuki UEDA ,  Toshihiko ICHINOSE ,  Masahiro TAKADA

发明人： Takashi AKIYAMA ,  Hideyuki UEDA ,  Toshihiko ICHINOSE ,  Masahiro TAKADA

IPC分类号： H01M8/04

CPC分类号： H01M8/04089 ,  H01M8/04589 ,  H01M8/04753 ,  H01M8/0488

摘要： A method for operating a fuel cell system including a fuel cell stack composed of a plurality of cells connected in series. The method includes the steps of: (a) supplying a fuel and an oxidant to anodes and cathodes of the cells, respectively, depending on a load to generate power at a constant voltage under constant voltage control; (b) temporarily suspending the supply of the oxidant with the fuel being supplied; and (c) lowering the constant voltage to a predetermined voltage simultaneously with or immediately before the suspension of the supply of the oxidant. According to this operation method, when the supply of the oxidant is suspended, a platinum catalyst in the cathodes can be reduced and reactivated in all the cells.

摘要翻译： 一种操作燃料电池系统的方法，所述燃料电池系统包括由串联连接的多个电池组成的燃料电池堆。 该方法包括以下步骤：（a）根据负载分别向电池的阳极和阴极供应燃料和氧化剂，以在恒定电压下以恒定电压控制发电; （b）暂时中止所供应的燃料供应氧化剂; 和（c）在氧化剂的供给停止之前或之前同时将恒定电压降低到预定电压。 根据该操作方法，当悬浮氧化剂的供给时，阴极中的铂催化剂可以在所有的电池中被还原并重新活化。

公开(公告)号：US20070125786A1

公开(公告)日：2007-06-07

申请号：US10588279

申请日：2005-01-28

申请人： Takashi Akiyama ,  Junji Niikura ,  Kohji Yuasa ,  Yukihiro Okada ,  Satoshi Shibutani ,  Hideyuki Ueda

发明人： Takashi Akiyama ,  Junji Niikura ,  Kohji Yuasa ,  Yukihiro Okada ,  Satoshi Shibutani ,  Hideyuki Ueda

IPC分类号： B65D81/38 ,  H01M8/04

CPC分类号： H01M8/04208 ,  H01M8/0284 ,  H01M8/2475

摘要： A fuel container for storing a fuel liquid for a fuel cell has a double wall structure including an inner container for storing a fuel liquid and an outer container for housing the inner container, and a material capable of retaining the fuel between the inner container and the outer container. A fuel cell pack includes a fuel cell and a fuel container for storing a fuel liquid for the fuel cell. The fuel cell pack includes a double wall exterior casing having an inner casing for housing the fuel cell and the fuel container and an outer casing for housing the inner casing, and a material capable of retaining the fuel between the inner casing and the outer casing.

摘要翻译： 用于储存燃料电池用燃料液体的燃料容器具有双层壁结构，该双层壁结构包括用于储存燃料液的内部容器和用于容纳内部容器的外部容器，以及能够将燃料保持在内部容器和内部容器之间的材料 外容器。 燃料电池组包括燃料电池和用于存储用于燃料电池的燃料液体的燃料容器。 燃料电池组包括双壁外壳，其具有用于容纳燃料电池和燃料容器的内壳和用于容纳内壳的外壳，以及能够将燃料保持在内壳和外壳之间的材料。

公开(公告)号：US20060134508A1

公开(公告)日：2006-06-22

申请号：US11312369

申请日：2005-12-21

申请人： Hideyuki Ueda ,  Shinsuke Fukuda

发明人： Hideyuki Ueda ,  Shinsuke Fukuda

IPC分类号： H01M4/94 ,  H01M8/10

CPC分类号： H01M8/04186 ,  H01M4/8605 ,  H01M8/0234 ,  H01M8/0239 ,  H01M8/04197 ,  H01M8/1011 ,  Y02E60/523

摘要： A direct methanol fuel cell of the present invention includes a unit cell having an electrolyte membrane, an anode on one surface of the electrolyte membrane, and a cathode on the other surface of the electrolyte membrane. The anode includes an anode catalyst layer and an anode diffusion layer. The anode catalyst layer is in contact with a surface of the electrolyte membrane. The anode diffusion layer is in contact with a surface of the anode catalyst layer opposite to the surface of the anode catalyst layer in contact with the electrolyte membrane. A methanol flux value JGDL of the anode diffusion layer and a methanol flux value JPEM of the electrolyte membrane satisfy the following relations: JGDL=1×10−5 to 5×10−4 mol/(cm2·min.),  (i) and JPEM×JGDL≦1×10−8 [mol/(cm2·min.)]2.  (ii)

摘要翻译： 本发明的直接甲醇燃料电池包括具有电解质膜的单元电池，电解质膜的一个表面上的阳极和电解质膜的另一个表面上的阴极。 阳极包括阳极催化剂层和阳极扩散层。 阳极催化剂层与电解质膜的表面接触。 阳极扩散层与阳极催化剂层的与电解质膜接触的与阳极催化剂层的表面相反的表面接触。 电解质膜的阳极扩散层的甲醇流量值JDSLDS和甲醇流量值J PEM＆lt;＆gt;满足以下关系：＆lt;＆RightArrow;＆CenterDot; “In-line Formulas”end =“lead”？> J＆lt; GDL＆gt; = 1×10 -5至5×10 -4 mol /（cm -1） > 2 .min。），（i）<？in-line-formula description =“In-line Formulas”end =“tail”？>和<？in-line-formula description =“In-line 公式“end =”lead“？> J PIP xJ GDL <= 1×10 -8 [mol /（cm 2） SUP> .min。）] <2> 。 （ii）<？in-line-formula description =“In-line Formulas”end =“tail”？>