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Branched/Crosslinked Sulfonated Polyimide Membranes for Polymer Electrolyte Fuel Cells |
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| Authors: | Yan Yin Shunsuke Hayashi Otoo Yamada Hidetoshi Kita Ken‐Ichi Okamoto |
| Abstract: | Summary: Branched/crosslinked sulfonated polyimide membranes incorporating superior mechanical properties, high proton conductivity, and excellent fuel cell performance were successfully developed. The resulting polymer electrolytes displayed conductivity values of about 0.2 S · cm−1 at 120 °C and 100% relative humidity. In a single H2/O2 fuel cell system at 90 °C, they exhibited reasonably high fuel cell performances comparable to that of Nafion 112. The structure of the branched/crosslinked sulfonated polyimide membranes studied here. |
| Keywords: | fuel cell performance membranes polyimides proton conductivity water uptake |