Patent ID: 7582210
Filing Date: 2009-09-01
Classification: B01D,C08G,C08J,C09D,H01M,Y02E,Y02P

Abstract:
1. An electrode provided with a proton-conducting polymer coating based on polyazoles which is obtained by a process comprising the steps (A) Mixing of one or more aromatic tetraamino compounds with one or more aromatic carboxylic acids or esters thereof which contain at least two acid groups per carboxylic acid monomer, or mixing of one or more aromatic and/or heteroaromatic diaminocarboxylic acids, in polyphosphoric acid to form a solution and/or dispersion, (B) Application of a layer to an electrode using the mixture from step A), (C) Heating of the flat structure/layer obtainable as described in step B) to temperatures of up to 350° C. under inert gas to form the polyazole polymer, (D) Treating the membrane formed in step C) by hydrolysis.