公开(公告)号：US06759157B1

公开(公告)日：2004-07-06

申请号：US09590985

申请日：2000-06-09

申请人： Harry R. Allcock ,  Michael A. Hofmann ,  Serguei N. Lvov ,  Xiang Y. Zhou ,  Digby McDonald

发明人： Harry R. Allcock ,  Michael A. Hofmann ,  Serguei N. Lvov ,  Xiang Y. Zhou ,  Digby McDonald

IPC分类号： H01M810

CPC分类号： B01D67/0011 ,  B01D2325/20 ,  B01D2325/26 ,  C08J5/22 ,  H01M8/04197 ,  H01M8/1034 ,  H01M8/1067 ,  Y02P70/56

摘要： Proton conducting membranes having improved resistance to methanol crossover are provided, along with methods for their manufacture. In a preferred embodiment, the polymeric membranes are formed by (a) dissolving a polymer, preferably a polyphosphazene, in an organic solvent to form a polymer solution; (b) adding an oxyacid to the polymer solution; (c) optionally, adding water to the polymer solution, preferably in a molar ratio equivalent to the oxyacid; (d) optionally, concentrating the polymer solution; (e) casting the polymer solution on a casting surface, such as one formed of or coated with TEFLON™; and (f) removing the organic solvent, so as to form the polymeric membrane. A particularly useful application for these polymeric membranes is in fuel cells, such as those wherein methanol and oxygen are converted into electrical energy.

摘要翻译： 提供了具有改进的抗甲醇交联性的质子导电膜及其制造方法。 在优选的实施方案中，聚合物膜通过（a）将聚合物，优选聚磷腈溶解在有机溶剂中形成聚合物溶液而形成; （b）向聚合物溶液中加入含氧酸; （c）任选地，向聚合物溶液中加入水，优选以相对于含氧酸的摩尔比加入; （d）任选地，浓缩聚合物溶液; （e）将聚合物溶液浇铸在诸如由TEFLON TM形成或涂覆的铸造表面上; 和（f）除去有机溶剂，以便形成聚合物膜。 这些聚合物膜的特别有用的应用是在燃料电池中，例如其中甲醇和氧被转化为电能的那些。