| 摘要 |
Fuel cell having: (a) an anode; (b) a cathode; (c) a polymer electrolyte membrane placed between the anode and the cathode which has at least one polyolefin grafted with a side chain containing proton conductive functional groups; wherein said fuel cell has a value of cell resistance at 90° C. not higher than 0.30 Omegacm<SUP>2</SUP>, preferably having between 0.2 Omegacm<SUP>2 </SUP>and 0.25 Omegacm<SUP>2</SUP>, more preferably between 0.05 Omegacm<SUP>2 </SUP>and 0.20 Omegacm<SUP>2</SUP>; a value of cell resistance at 20° C. differing from the value of cell resistance at 90° C. of an amount not higher than 90%, preferably not higher than 70%, more preferably not higher than 50%, with respect to the value of cell resistance at 90° C. Preferably, said fuel cell is a direct methanol fuel cell (DMFC). |
