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17 条记录 (耗时 0.033 秒)

    Fuel cell having a corrosion resistant and protected cathode catalyst layer
    1.
    发明授权
    Fuel cell having a corrosion resistant and protected cathode catalyst layer 有权
    具有耐腐蚀和保护的阴极催化剂层的燃料电池

    公开(公告)号：US06855453B2

    公开(公告)日：2005-02-15

    申请号：US10331421

    申请日：2002-12-30

    申请人： John A. S. Bett ,  Ned E. Cipollini ,  Thomas D. Jarvi ,  Richard D. Breault

    发明人： John A. S. Bett ,  Ned E. Cipollini ,  Thomas D. Jarvi ,  Richard D. Breault

    IPC分类号： H01M20060101 ,  H01M4/86 ,  H01M4/88 ,  H01M4/90 ,  H01M4/92 ,  H01M4/96 ,  H01M8/02 ,  H01M8/10

    CPC分类号： H01M4/926 ,  H01M4/8605 ,  H01M4/92 ,  H01M4/921 ,  H01M8/1007

    摘要： The invention is a fuel cell (20) having a corrosion resistant and protected cathode catalyst layer (24). The cathode catalyst layer (24) includes a platinum oxygen reduction catalyst and an oxygen evolution catalyst selected from the group consisting of catalysts that are more active than platinum for oxygen evolution. The oxygen evolution catalyst may be uniformly applied within the cathode catalyst layer, or non-uniformly applied to identified high corrosion areas (82) (84) of the cathode catalyst layer (24). The cathode catalyst layer (24) may include heat-treated carbon support material, and/or a heat-treated carbon black within a diffusion layer (40) supporting the cathode catalyst layer (24). The fuel cell (20) may also include an anode catalyst layer (22) having a poor oxygen reduction catalyst having a greater oxygen reduction over potential than platinum.

    摘要翻译： 本发明是具有耐腐蚀和保护的阴极催化剂层（24）的燃料电池（20）。 阴极催化剂层（24）包括铂氧还原催化剂和析氧催化剂，所述催化剂选自与铂相比更有活性以用于析氧的催化剂。 析氧催化剂可以均匀地施加在阴极催化剂层内，或者不均匀地施加到阴极催化剂层（24）的识别的高腐蚀区域（82）（84）上。 在支撑阴极催化剂层（24）的扩散层（40）内，阴极催化剂层（24）可以包括经热处理的碳载体材料和/或经热处理的炭黑。 燃料电池（20）还可以包括具有比铂更大的氧还原能力的氧还原催化剂不良的阳极催化剂层（22）。

    Membrane electrode assemblies with hydrogen peroxide decomposition catalyst
    4.
    发明授权
    Membrane electrode assemblies with hydrogen peroxide decomposition catalyst 有权
    膜电极组件用过氧化氢分解催化剂

    公开(公告)号：US07112386B2

    公开(公告)日：2006-09-26

    申请号：US10235074

    申请日：2002-09-04

    申请人： Ned E. Cipollini ,  David A. Condit ,  Jared B. Hertzberg ,  Thomas D. Jarvi ,  James A. Leistra ,  Michael L. Perry

    发明人： Ned E. Cipollini ,  David A. Condit ,  Jared B. Hertzberg ,  Thomas D. Jarvi ,  James A. Leistra ,  Michael L. Perry

    IPC分类号： H01M4/90 ,  H01M4/92

    CPC分类号： H01M4/921 ,  H01M4/8605 ,  H01M8/0662 ,  H01M8/1007

    摘要： A membrane electrode assembly includes an anode including a hydrogen oxidation catalyst; a cathode; a membrane disposed between the anode and the cathode; and a peroxide decomposition catalyst positioned in at least one position selected from the group consisting of the anode, the cathode, a layer between the anode and the membrane and a layer between the cathode and the membrane wherein the peroxide decomposition catalyst has selectivity when exposed to hydrogen peroxide toward reactions which form benign products from the hydrogen peroxide. The peroxide decomposition catalyst can also be positioned within the membrane. Also disclosed is a power-generating fuel cell system including such a membrane electrode assembly, and a process for operating such a fuel cell system.

    摘要翻译： 膜电极组件包括：包含氢氧化催化剂的阳极; 阴极 设置在阳极和阴极之间的膜; 以及位于选自阳极，阴极，阳极和膜之间的层以及阴极和膜之间的层中的至少一个位置的过氧化物分解催化剂，其中过氧化物分解催化剂暴露于阴极和膜之间具有选择性 过氧化氢朝向形成来自过氧化氢的良性产物的反应。 过氧化物分解催化剂也可以位于膜内。 还公开了包括这种膜电极组件的发电燃料电池系统和用于操作这种燃料电池系统的方法。

    Method of preparing a fuel cell unitized electrode assembly by ultrasonic welding
    9.
    发明授权
    Method of preparing a fuel cell unitized electrode assembly by ultrasonic welding 有权
    通过超声波焊接制备燃料电池单元电极组件的方法

    公开(公告)号：US08568943B2

    公开(公告)日：2013-10-29

    申请号：US12087036

    申请日：2005-12-29

    申请人： Tommy Skiba ,  Chi-Hum Paik ,  Thomas D. Jarvi

    发明人： Tommy Skiba ,  Chi-Hum Paik ,  Thomas D. Jarvi

    IPC分类号： H01M8/10

    CPC分类号： B29C65/72 ,  H01M8/0276 ,  H01M8/0284 ,  H01M8/0286 ,  H01M8/0297 ,  H01M8/1004 ,  Y02E60/521 ,  Y02P70/56

    摘要： A unitized electrode assembly (9) for use in the fuel cell comprises a first GDL (23), a PEM (28), and a second GDL (12), with electrode catalyst (27, 30) disposed between said PEM and each of said GDLs, said layers (23, 27, 30, 12) being impregnated with a thermoplastic polymer a sufficient distance from each edge of the UEA so as to form a fluid seal (13). The UEA is formed by a process which comprises making a sandwich of some or all of said layers (23, 27, 28, 30 and 33), with thermoplastic polymer film (22, 25, 32, 35) extending inwardly from the edges of said sandwich a sufficient distance to form the seal, said thermoplastic polymer film being disposed between each electrode and the adjacent GDL and/or between each GDL and release film (21, 36) on the top and bottom of the sandwich. The sandwich, compressed by force between a holding fixture (19) and an anvil (40), is heated by ultrasonic vibration so as to cause said thermoplastic polymer to melt and impregnate the layers (23, 27, 30, 12) of the UEA with the film (22 and/or 25; 32 and/or 35).

    摘要翻译： 用于燃料电池的单元化电极组件（9）包括第一GDL（23），PEM（28）和第二GDL（12），其中电极催化剂（27,30）设置在所述PEM和 所述GDL，所述层（23,27,30,12）浸渍有距离UEA的每个边缘足够距离的热塑性聚合物，以形成流体密封件（13）。 UEA通过一种方法形成，该方法包括用从所述层（23,27,28,30和33）的边缘向内延伸的热塑性聚合物膜（22,25,32,35）形成部分或全部所述层（23,27,28,30和33） 所述三明治形成足够的距离以形成密封，所述热塑性聚合物膜设置在每个电极和相邻的GDL之间和/或每个GDL与夹层的顶部和底部上的脱模膜（21,36）之间。 通过超声振动加热夹持固定件（19）和砧座（40）之间受力压制的夹层，以使所述热塑性聚合物熔融并浸渍UEA的层（23,27,30,12） （22和/或25; 32和/或35）。

    Nanostructures, Systems, and Methods for Photocatalysis
    10.
    发明申请
    Nanostructures, Systems, and Methods for Photocatalysis 有权
    纳米结构，系统和光催化方法

    公开(公告)号：US20120267234A1

    公开(公告)日：2012-10-25

    申请号：US13452258

    申请日：2012-04-20

    申请人： Steven Y. Reece ,  Thomas D. Jarvi

    发明人： Steven Y. Reece ,  Thomas D. Jarvi

    IPC分类号： H01B1/00 ,  C01B13/02 ,  B01J37/34 ,  B01J19/12 ,  B82Y40/00 ,  B82Y30/00

    CPC分类号： B01J35/004 ,  B01J19/127 ,  B01J19/2475 ,  B01J23/745 ,  B01J35/0013 ,  B01J35/06 ,  B82Y30/00 ,  C01B3/042 ,  C01B13/0207 ,  C25B1/003 ,  Y02E60/364 ,  Y02E60/368 ,  Y02P20/134

    摘要： The present invention generally relates to nanostructures and compositions comprising nanostructures, methods of making and using the nanostructures, and related systems. In some embodiments, a nanostructure comprises a first region and a second region, wherein a first photocatalytic reaction (e.g., an oxidation reaction) can be carried out at the first region and a second photocatalytic reaction (e.g., a reduction reaction) can be carried out at the second region. In some cases, the first photocatalytic reaction is the formation of oxygen gas from water and the second photocatalytic reaction is the formation of hydrogen gas from water. In some embodiments, a nanostructure comprises at least one semiconductor material, and, in some cases, at least one catalytic material and/or at least one photosensitizing agent.

    摘要翻译： 本发明一般涉及包含纳米结构的纳米结构和组合物，制备和使用纳米结构的方法以及相关系统。 在一些实施方案中，纳米结构包括第一区域和第二区域，其中可以在第一区域进行第一光催化反应（例如，氧化反应），并且可以进行第二光催化反应（例如，还原反应） 在第二个地区。 在某些情况下，第一次光催化反应是从水中形成氧气，第二次光催化反应是从水中形成氢气。 在一些实施方案中，纳米结构包含至少一种半导体材料，并且在一些情况下包含至少一种催化材料和/或至少一种光敏剂。