To obtain proton-conducting organic materials with high conductivity under
nonaqueous conditions, high thermal stability, and high resistance to acid,
we prepared perfluorooctane-sulfonic acid (FOSA)/ poly(propylene carbonate
) (PPC) composites with different weight ratios. The composite with the wei
ght ratios of 3 shows a high proton-conductivity of 1.9 x 10(-5) S.cm(-1) a
t 30 degrees C under nonaqueous conditions.