Patent ID: 8404400
Filing Date: 2013-03-26
Classification: H01M,Y02E

Abstract:
1. A method (M-CCMP) to obtain a catalyst coated membrane precursor (CCMP), said method comprising: step (j), applying onto at least one surface of a membrane a catalyst-polymer liquid dispersion (LD), the liquid dispersion (LD) comprising (i) catalyst particles, (ii) polymer particles consisting of at least one (per)fluoro sulfonyl fluoride polymer in the —SO wherein said membrane is a film consisting of at least one (per)fluoro sulfonyl fluoride polymer in the —SO step (jj), removing the liquid of the liquid dispersion so as to form a multilayer structure comprising at least one coating solid layer adhering onto the at least one surface of the membrane, said at least one coating solid layer comprising catalyst particles and polymer particles, said polymer particles consisting of at least one (per)fluoro sulfonyl fluoride polymer in the —SO optionally, step (jjj), hot pressing the multilayer structure.