Patent ID: 8034509
Filing Date: 2011-10-11
Classification: C25B,H01M,Y02E,Y02P

Abstract:
1. A membrane electrode assembly comprising an anode, a cathode, and an electrolyte membrane disposed between the anode and cathode, wherein the electrolyte membrane comprises a solid electrolyte having a plurality of pores with a mean pore diameter ranging from 1 to 5 nm; and the solid electrolyte is porous and formed from a polymer having an inorganic backbone in which an organic group having one or more carbon atoms and at least one functional group selected from the group consisting of a sulfonic acid group, a phosphoric acid group, and a carboxylic acid group, bonded to the metal atoms or oxygen atoms in the inorganic backbone, wherein the inorganic backbone has metal atoms and oxygen atoms bonded to metal atoms and which consists of inorganic elements, and which is obtained by the polycondensation of at least one compound of formula (7) as follows: wherein R is an C wherein the interior surfaces of a plurality of pores of the solid electrolyte have ion exchange functional groups bonded to the organic groups of the polymer, and wherein the pores comprise liquid water.