Enhanced high-temperature polymer electrolyte membrane for fuel cells based on polybenzimidazole and ionic liquids

被引：84

作者：

Wang, Jacob Tse-Wei ^{[1
]}

Hsu, Steve Lien-Chung ^{[1
]}

机构：

[1] Natl Cheng Kung Univ, Dept Mat Sci & Engn, Tainan 70101, Taiwan

来源：

ELECTROCHIMICA ACTA | 2011年 / 56卷 / 07期

关键词：

Polybenzimidazole; Ionic liquid; Fuel cell; Polymer electrolyte membrane; High-temperature; Ionic conductivity; PROTON-CONDUCTING MEMBRANES; COMPOSITE MEMBRANES; EXCHANGE MEMBRANES; TRANSPORT; ACID;

D O I：

10.1016/j.electacta.2010.12.069

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Polybenzimidazole (PBI)/ionic liquid (IL) composite membranes were prepared from an organosoluble, fluorine-containing PBI with ionic liquid. 1-hexyl-3-methylimidazolium trifluoromethanesulfonate (HMI-TO. PBI/HMI-Tf composite membranes with different HMI-Tf concentrations have been prepared. The ionic conductivity of the PBI/HMI-Tf composite membranes increased with both the temperature and the HMI-Tf content. The composite membranes achieve high ionic conductivity (1.6 x 10(-2) S/cm) at 250 degrees C under anhydrous conditions. Although the addition of HMI-Tf resulted in a slight decrease in the methanol barrier ability and mechanical properties of the PBI membranes. the PBI/HMI-Tf composite membranes have demonstrated high thermal stability up to 300 degrees C, which is attractive for high-temperature (>200 degrees C) polymer electrolyte membrane fuel cells. (C) 2010 Elsevier Ltd. All rights reserved..

引用

页码：2842 / 2846

页数：5

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