| abstract |
A process for producing a proton conducting membrane comprising: (i) electrically non-conductive inorganic powder having good acid absorption capacity, 5 vol% to 60 vol%, wherein the powder A powder essentially comprising nano-sized particles; (ii) 5% to 50% by volume of a polymer binder that is chemically compatible with acid, oxygen and fuel; and (iii) 10 to 90% by volume of an acid or acid aqueous solution. Wherein the mixing is carried out in various proportions to produce a proton conductive mixture; the proton conductive mixture is placed on a roll paper, nonwoven matrix, etc. at ambient temperature. Continuously casting; drying the cast proton-conducting mixture at a temperature in excess of 100 ° C. for approximately 5-30 minutes Proton conduction with an average pore size of less than 30 nanometers by laminating a plurality of these dry films together under pressure and then extracting the pore former from the pores of these dry films Forming a conductive film. |