TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preferred Components: The fuel cell further comprises a non-ionic polymer.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The polyvinyl polymer comprises a polyvinyl ester and polymer segments having a structure of formula (-CH2-CH(-O-C(=O)-R-)). The polyvinyl ester includes ester group of formula (-CH2-CH(-O-C(=O)-R)-CH(-OH)-). The polyvinyl ester comprises polyvinyl acetate. The ion conducting polymer comprises protogenic groups. The ion conducting polymer comprises: a perfluorosulfonic acid polymer; a perfluorocyclobutyl group; and a polymer having the structure of formula (E0-P1-Q1-P2). The ion conducting polymer includes polymer segment of formula (-E1(-A-CF2-CF2-Z1)-P1-Q1-P2-). The non-ionic polymer is a fluoro-elastomer. The ion conducting polymer is a copolymer containing a polymerization unit based on a perfluorovinyl compound having a structure of formula (CF2=CF-(OCF2CFX1)m-Or-(CF2)q-SO3H), and a polymerization unit based on tetrafluoroethylene. The polyvinyl polymer is present in an amount of 0.1-40 wt.% of the ion conducting membrane and the ion conducting polymer i.e. different than the polyvinyl polymer is present in an amount of 60-99.9 wt.% of the ion conducting membrane. The ion conducting membrane further comprises a metal oxide.R = alkyl or aryl, preferably 1-8C-alkyl or 6-15C-aryl;Eo = moiety having a protogenic group including -SO2X, -PO3H2 and -COX;X = -OH, halo, ester or amine group of formula (-NH-S(=O)(=O)-R4);R4 = CF3, 1-25C-alkyl, 1-25C-perfluoroalkylene or 1-25C-aryl;P1, P2 = absent, -O-, -S-, -SO-, -CO-, -SO2-, -NH-, NR2- or -R3-;R2 = 1-25C-alkyl, 1-25C-aryl or 1-25C-arylene;R3 = 1-25C-alkylene, 1-25C-perfluoroalkylene, perfluoroalkyl ether, alkylether or 1-25C-arylene;R4 = CF3, 1-25C-alkyl, 1-25C-perfluoroalkylene, 1-25C-aryl or E1;Q1 = a fluorinated cyclobutyl moiety;Z1 = protogenic group;E1 = an aromatic containing moiety;A = absent, O or a chain extender having a carbon backbone;m = 0-3;q = 1-12;r = 0-1; andX1 = F or CF3.