| 摘要 |
Disclosed is a composite electrolyte membrane for fuel cells, comprising, based on weight of the membrane, a matrix blend resin that consists of 10-70 wt % of an ion exchange resin having a cation exchanging group on the side chain thereof, 10-70% wt of a non-conductive polymer and 10-70 wt % of a thermo-curable oligomer, and 10-60 wt % of a proton conductive material. In the matrix blend resin, the thermo-curable oligomer is cross-linked with chains of the non-conductive polymer and the ion exchange resin by heat, thus forming network structure, in which the proton conductive material of fine powder forms is uniformly dispersed. The above membrane is excellent in proton conductivity, mechanical properties, dimensional stability, and separability between gaseous or liquid fuel and gaseous oxidant. In particular, the membrance has excellent ion conductivity at high temperatures of 100° C. or more because of a moisturizing function of the proton conductive material.
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