期刊
EUROPEAN POLYMER JOURNAL
卷 44, 期 7, 页码 2202-2206出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.eurpolymj.2008.04.021
关键词
polybenzimidazole; imidazole; phosphoric acid; fuel cell; proton conductivity
资金
- National Science Council (Taiwan, ROC) [NSC95-2221-E-006-186]
Polybenzimidazole (PBI)/imidazole (Im) hybrid membranes were prepared from an organosoluble, fluorine-containing PBI with Im. The thermal decomposition of the PBI/Im hybrid membranes occurred at about 160 degrees C. The conductivities of the acid doped PBI/Im hybrid membranes increased with both the temperature and the Im content. The conductivity of acid doped PBI-40Im (molar ratio of Im/PBI=40) reached 3.1 x 10(-3) (S/cm) at 160 degrees C. The proton conductivities of PBI/Im hybrid membranes were over 2 x 10(-3) (S/cm) at 90 degrees C and 90% relative humidity. The addition of Im could reduce the mechanical properties and methanol barrier ability of the PBI membranes. (c) 2008 Elsevier Ltd. All rights reserved.
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