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    Sulfonated perfluorocyclobutane ion-conducting membranes
    1.
    发明授权
    Sulfonated perfluorocyclobutane ion-conducting membranes 有权
    磺化全氟环丁烷离子导电膜

    公开(公告)号：US06559237B1

    公开(公告)日：2003-05-06

    申请号：US09587522

    申请日：2000-06-05

    申请人： Shane S. Mao ,  Krzysztof A. Lewinski ,  David A. Ylitalo

    发明人： Shane S. Mao ,  Krzysztof A. Lewinski ,  David A. Ylitalo

    IPC分类号： C08F838

    CPC分类号： C08F8/36 ,  C08F2800/20 ,  C08J5/18 ,  C08F116/14 ,  C08F216/1408 ,  C08F216/125

    摘要： Disclosed are sulfonated aromatic perfluorocyclobutane polymers meeting a condition selected from: a) the equivalent weight of the polymer is 5000 or less, and b) the proton conductivity of the polymer at 25° C. is 0.01 Siemens per centimeter (S/cm) or higher, and methods of making same, especially sulfonated aromatic perfluorocyclobutane polymers which comprise units according to the formula: wherein —B— is 1,2-perfluorocyclobutylene (C4F6); each —X— is independently selected from the group consisting of: a bond, —O—, —S—, —SO—, —SO2—, —CO—, —NH—, —NR1—, and —R2—, wherein R1 is C1-C25 substituted or unsubstituted, saturated or unsaturated alkyl or aryl and R2 is C1-C25 substituted or unsubstituted, saturated or unsaturated alkylene or arylene; —Ar— is a substituted or unsubstituted C1-C30 at least divalent aromatic hydrocarbon group; n is a non-negative integer chosen independently for each of said repeating units such that the average for the polymer is greater than 0. They are particularly useful in ion conducting membranes for use in electrochemical cells.

    摘要翻译： 公开了满足以下条件的磺化芳族全氟环丁烷聚合物：a）聚合物的当量为5000或更小，以及b）聚合物在25℃下的质子传导率为0.01西门子/厘米（S / cm）或 特别是含有下式的单元的磺化芳族全氟环丁烷聚合物：其中-B-是1,2-全氟环丁烯（C 4 F 6）; 每个-X-独立地选自：-O - ， - S - ， - SO - ， - SO 2 - ， - CO - ， - NH - ， - NR 1 - 和-R 2 - ，其中 R1是C1-C25取代或未取代的饱和或不饱和的烷基或芳基，R2是C1-C25取代或未取代的饱和或不饱和的亚烷基或亚芳基; -Ar-是取代或未取代的C1-C30至少二价芳族烃基; n是对于每个所述重复单元独立地选择的非负整数，使得聚合物的平均值大于0.它们在用于电化学电池的离子导电膜中特别有用。

    Hybrid membrane electrode assembly
    2.
    发明授权
    Hybrid membrane electrode assembly 有权
    混合膜电极组件

    公开(公告)号：US06238534B1

    公开(公告)日：2001-05-29

    申请号：US09312514

    申请日：1999-05-14

    申请人： Shane S. Mao ,  Gregory Meis Haugen ,  Krzysztof A. Lewinski ,  Mark Kevitt Debe

    发明人： Shane S. Mao ,  Gregory Meis Haugen ,  Krzysztof A. Lewinski ,  Mark Kevitt Debe

    IPC分类号： G01N2726

    CPC分类号： H01M4/926 ,  H01M8/04119 ,  H01M8/1004

    摘要： Hybrid membrane electrode assemblies (MEAs) are presented, having an anode comprising a dense distribution of catalyst that may be borne on small, high-aspect ratio supports, such as nanostructured elements, and a cathode comprising a less dense distribution of catalyst that may be borne on lower-aspect ratio supports, such as carbon particle supported catalyst.

    摘要翻译： 提出了混合膜电极组件（MEA），其具有包含致密分布的催化剂的阳极，所述催化剂可以承载在诸如纳米结构元素的小的高纵横比载体上，以及包含较不致密的催化剂分布的阴极， 由较低纵横比的载体承担，如碳载体催化剂。

    Fuel cell cathode catalyst
    3.
    发明授权
    Fuel cell cathode catalyst 有权
    燃料电池阴极催化剂

    公开(公告)号：US07419741B2

    公开(公告)日：2008-09-02

    申请号：US10674594

    申请日：2003-09-29

    申请人： George D. Vernstrom ,  Radoslav Atanasoski ,  Mark K. Debe ,  Gregory M. Haugen ,  Krzysztof A. Lewinski ,  Andrew J. L. Steinbach

    发明人： George D. Vernstrom ,  Radoslav Atanasoski ,  Mark K. Debe ,  Gregory M. Haugen ,  Krzysztof A. Lewinski ,  Andrew J. L. Steinbach

    IPC分类号： H01M4/00

    CPC分类号： H01M4/8605 ,  B01J35/026 ,  H01M4/8803 ,  H01M4/8871 ,  H01M4/921

    摘要： A fuel cell cathode catalyst is provided which comprises nanostructured elements comprising microstructured support whiskers bearing nanoscopic catalyst particles. The nanoscopic catalyst particles are made by the alternating application of first and second layers, the first layer comprising platinum and the second layer being an alloy or intimate mixture of iron and a second metal selected from the group consisting of Group VIb metals, Group VIIb metals and Group VIIIb metals other than platinum and iron, where the atomic ratio of iron to the second metal in the second layer is between 0 and 10, where the planar equivalent thickness ratio of the first layer to the second layer is between 0.3 and 5, and wherein the average bilayer planar equivalent thickness of the first and second layers is less than 100 Å.

    摘要翻译： 提供了一种燃料电池阴极催化剂，其包括纳米结构元件，其包含具有纳米级催化剂颗粒的微结构化支撑晶须。 纳米级催化剂颗粒通过交替施加第一和第二层制成，第一层包含铂，第二层是铁和选自第VIb族金属，第VIIb族金属的第二金属的合金或紧密混合物 和除了铂和铁之外的第VIIIb族金属，其中第二层中铁与第二金属的原子比在0和10之间，其中第一层与第二层的平面当量厚度比在0.3和5之间， 并且其中所述第一和第二层的平均双层平面等效厚度小于100。