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52 条记录 (耗时 0.031 秒)

    Polybetaine stabilized platinum nanoparticles, method for the production thereof and utilization for fuel-cell catalysts
    3.
    发明授权
    Polybetaine stabilized platinum nanoparticles, method for the production thereof and utilization for fuel-cell catalysts 失效
    聚甜菜碱稳定的铂纳米粒子，其生产方法和燃料电池催化剂的利用

    公开(公告)号：US06391818B1

    公开(公告)日：2002-05-21

    申请号：US09555980

    申请日：2000-08-31

    申请人： Harald Bönsel ,  Gregor Deckers ,  Georg Frank ,  Hans Millauer ,  Thomas Soczka-Guth

    发明人： Harald Bönsel ,  Gregor Deckers ,  Georg Frank ,  Hans Millauer ,  Thomas Soczka-Guth

    IPC分类号： B01J3106

    CPC分类号： C25C5/02 ,  B01J35/0013 ,  B82Y30/00 ,  H01M4/92 ,  H01M4/926 ,  H01M2300/0082

    摘要： Polybetaine-stabilized nanosize platinum particles, a process for preparing them and their use for electrocatalysts in fuel cells Soluble nanosize particles which have a diameter of from 0.5 to 3 nm, preferably from 1 to 2 nm, comprise platinum alone or platinum and other metals of the platinum group and are embedded in a protective colloid which comprises polymeric betaines and can be degraded by hydrolysis. The betaine is preferably a carbobetaine of the formula —N+R1R2—(—CH2—)n—CO2−, a phosphobetaine of the formula —N+R1R2—(—CH2—)n—PO3— or, preferably, a sulfobetaine of the formula —N+R1R2—(—CH2—)n—SO3—, where R1 and R2 may, independently of one another, be identical or different and are alkyl radicals having from 1 to 6 carbon atoms and n is 1, 2 or 3. Also described are a process for preparing the nanosize particles and catalysts produced therefrom and also their use for fuel cells.

    摘要翻译： 聚甜菜碱稳定的纳米尺寸铂颗粒，其制备方法及其在燃料电池中的电催化剂的用途直径为0.5至3nm，优选1至2nm的可溶性纳米尺寸颗粒包含单独的铂或铂和其它金属 铂基团，并且嵌入包含聚合甜菜碱的保护胶体中，并且可以通过水解而降解。 甜菜碱优选为式-N + R1R2 - （ - CH2-）n-CO2-，式-N + R1R2 - （ - CH2-）n-PO3-的磷酸甜菜碱的碳甜蛋白，或优选为 式-N + R1R2 - （ - CH2-）n-SO3-，其中R1和R2可以彼此独立地相同或不同，并且是具有1至6个碳原子的烷基，n是1,2或 还描述了制备纳米尺寸颗粒和由其制备的催化剂的方法，以及它们在燃料电池中的用途。

    Process for continuous production of membrane-electrode composites
    5.
    发明授权
    Process for continuous production of membrane-electrode composites 有权
    连续生产膜 - 电极复合材料的方法

    公开(公告)号：US06197147B1

    公开(公告)日：2001-03-06

    申请号：US09091659

    申请日：1999-04-05

    申请人： Harald Bönsel ,  Joachim Clauss ,  Gregor Deckers ,  Georg Frank ,  Arnold Schneller ,  Helmut Witteler ,  Mike Römmler ,  Michael Heine

    发明人： Harald Bönsel ,  Joachim Clauss ,  Gregor Deckers ,  Georg Frank ,  Arnold Schneller ,  Helmut Witteler ,  Mike Römmler ,  Michael Heine

    IPC分类号： B32B3100

    CPC分类号： H01M4/926 ,  C25B9/10 ,  H01M4/90 ,  H01M4/92 ,  H01M8/0213 ,  H01M8/1004 ,  H01M8/1023 ,  H01M8/1025 ,  H01M8/1027 ,  H01M8/103 ,  H01M8/1032 ,  H01M8/1039 ,  Y02P70/56 ,  Y10T156/1084

    摘要： A process for producing laminates which contain at least one centrally arranged, ion-conductive membrane which is, at least over a substantial part of its two mutually opposite flat faces, electrically conductively bonded to at least one catalytically active substance and to at least one two-dimensional, gas-permeable, electron-conductive contacting material, the bonding of at least two of the said components having been effected by lamination. The process comprises carrying out the bonding of the ion-conductive membrane, of the catalytically active substance and of the electron-conductive contacting material continuously. The ion-conductive membrane is brought together with at least the electron-conductive contacting material in the exact position by means of transport and feeding devices and the two components are laminated and bonded to one another by pressing them together. The range of variation in the a.c. resistances of the laminates produced by the process according to the invention is ±10%. The laminates are particularly suitable for use in fuel cells or electrolysers.

    摘要翻译： 一种制备层压体的方法，其包含至少一个中心布置的离子传导膜，其至少在其两个相互相对的平坦表面的至少大部分上与导电键合至至少一种催化活性物质和至少一种二 三维，透气，电子传导的接触材料，至少两个所述组分的结合已通过层压实现。 该方法包括连续地进行催化活性物质和电子传导性接触材料的离子传导膜的接合。 离子传导膜通过输送和进料装置与至少电子传导接触材料在精确位置一起被带到一起，并且两个部件通过将它们压在一起而彼此层压并结合。 a.c.的变化范围。 根据本发明的方法生产的层压体的电阻为±10％。 层压板特别适用于燃料电池或电解槽。

    Method for producing sulfonated aromatic polymers and use of the process products for producing membranes
    9.
    发明授权
    Method for producing sulfonated aromatic polymers and use of the process products for producing membranes 失效
    制备磺化芳族聚合物的方法和使用该工艺产品生产膜

    公开(公告)号：US06790931B2

    公开(公告)日：2004-09-14

    申请号：US10148776

    申请日：2003-01-13

    申请人： Wei Cui ,  Thomas Soczka-Guth ,  Georg Frank

    发明人： Wei Cui ,  Thomas Soczka-Guth ,  Georg Frank

    IPC分类号： C08G7500

    CPC分类号： C08J5/2256 ,  B01D67/0009 ,  B01D71/62 ,  B01D71/68 ,  B01D71/82 ,  C08G65/48 ,  C08G75/23 ,  C08J2371/12 ,  H01M8/1027 ,  H01M8/103 ,  H01M8/1032 ,  Y02P70/56

    摘要： A novel non-aggressive sulfonating process for aromatic polymers is described. The process encompasses: a). dissolving the aromatic polymer in a substantially anhydrous acid selected from the group consisting of concentrated sulfuric acid, chlorosulfonic acid, and oleum, b) adding an organic solvent which is inert under the conditions of the reaction, c) adding a carboxylic anhydride, d) adding a sulfonating agent, and e) carrying out the sulfonation at a temperature below 25° C. and for a time sufficient to achieve the desired degree of sulfonation. The resultant homogeneous products of the process may preferably be used to produce membranes, for example for fuel cell applications

    摘要翻译： 描述了一种用于芳族聚合物的新型非侵蚀性磺化方法。该方法包括：a）。 将芳族聚合物溶解在选自浓硫酸，氯磺酸和发烟硫酸中的基本上无水的酸中，b）在反应条件下加入惰性的有机溶剂，c）加入羧酸酐，d） 加入磺化剂，和）在低于25℃的温度下进行磺化，并持续足以实现所需程度的磺化的时间。所得到的均匀产物可优选用于制备膜，例如用于 燃料电池应用