公开(公告)号：US20020155342A1

公开(公告)日：2002-10-24

申请号：US10114663

申请日：2002-04-02

Applicant: Ballard Power Systems Inc.

Inventor： David S. Wainwright ,  Silvia Wessel

IPC: H01M004/86 ,  B01J023/00 ,  H01M004/96 ,  B01J021/18

CPC classification number: H01M4/8605 ,  B01J21/18 ,  B01J23/40 ,  B01J37/084 ,  H01M4/92 ,  H01M4/921 ,  H01M4/925 ,  H01M4/926

Abstract: A supported catalyst composition comprising a metal catalyst nanodispersed in a support that is a hard disordered carbon or carbon glass; or a partially graphitized or disordered carbon intercalation complex; or nullhouse-of-cardsnull transition metal dichalcogenide such as molybdenum disulfide (MoS2). Also disclosed are embodiments based on the above supported catalyst compositions, wherein the metal catalyst is Pt or Pt alloy, and wherein the nullporesnull comprised in the support are engineered to provide selective access to H2, but not to larger molecules, such as CO or H2O. Disclosed are methods for improving catalyst utilization, resistance to poisoning, and resistance of catalyst supports to corrosion-as well as products related thereto. Also disclosed is an MEA that comprises the supported, nanodispersed Pt and Pt alloy catalyst compositions of this invention, and a fuel cell that contains such an MEA.

Abstract translation: 一种载体催化剂组合物，其包含纳米分散在作为硬质无序碳或碳玻璃的载体中的金属催化剂; 或部分石墨化或无序碳插层复合物; 或“家卡”过渡金属二硫属元素如二硫化钼（MoS2）。 还公开了基于上述负载的催化剂组合物的实施方案，其中金属催化剂是Pt或Pt合金，并且其中包含在载体中的“孔”被工程化以提供对H 2的选择性进入，但不提供对较大分子例如CO 或H2O。 公开了提高催化剂利用率，耐中毒性和催化剂载体耐腐蚀性的方法以及与其有关的产品。 还公开了包含本发明的负载的纳米分散Pt和Pt合金催化剂组合物的MEA和包含这种MEA的燃料电池。

公开(公告)号：US20040071881A1

公开(公告)日：2004-04-15

申请号：US10267910

申请日：2002-10-09

Applicant: Ballard Power Systems Inc.

Inventor： Haijiang Wang ,  Guy Ebbrell ,  Evelyn Lai ,  Steven Mallinson ,  Gianni Fiorini ,  Silvia Wessel

IPC: B05D005/12

CPC classification number: B01D67/0088 ,  B01D69/06 ,  C08J5/2287 ,  C08J2327/18 ,  H01M4/881 ,  H01M4/8814 ,  H01M4/8828 ,  H01M4/8896 ,  H01M2008/1095

Abstract: An ion-exchange membrane may be continuously coated by depositing a catalyst composition on a release surface, drying the catalyst at an elevated temperature and then transferring the dried catalyst layer onto an ion-exchange membrane by applying pressure at a different elevated temperature. Also disclosed is an apparatus for thus continuously coating an ion-exchange membrane. The catalyst coated membrane is of particular use in polymer electrolyte membrane (PEM) fuel cells for which a membrane electrode assembly may be prepared by bonding fluid distribution layers to the catalyst coated membrane.

Abstract translation: 离子交换膜可以通过在释放表面上沉积催化剂组合物，在升高的温度下干燥催化剂，然后通过在不同的升高的温度下施加压力将干燥的催化剂层转移到离子交换膜上而连续地涂覆。 还公开了一种用于连续涂布离子交换膜的装置。 催化剂涂覆的膜在聚合物电解质膜（PEM）燃料电池中特别有用，通过将流体分配层粘合到催化剂涂覆的膜上，可以制备膜电极组件。