Preparation and characterization of new anhydrous, conducting membranes based on composites of ionic liquid trifluoroacetic propylamine and polymers of sulfonated poly (ether ether) ketone or polyvinylidenefluoride

被引：84

作者：

Che, Quantong ^{[1
]}

Sun, Baoying ^{[1
]}

He, Ronghuan ^{[1
]}

机构：

[1] NE Univ, Dept Chem, Shenyang 110004, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2008年 / 53卷 / 13期

关键词：

anhydrous conducting membranes; ionic liquid; conductivity; mechanical strength; proton exchange membrane fuel cell;

D O I：

10.1016/j.electacta.2008.01.028

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A novel ionic liquid of trifluoroacetic propylamine, i.e., [CH3CH2CH2NH3+] [CF3COO-] (TFAPA), was synthesized from trifluoroacetic acid and propylamine. The ionic liquid of TFAPA was used to prepare anhydrous, conducting membranes based on polymers of sulfonated poly (ether ether) ketone (SPEEK) or polyvinylidenefluoride (PVDF). The ionic conductivity and mechanical strength of the composite membranes were investigated at elevated temperatures and under anhydrous conditions. Conductivity of 0.030 S/cm was achieved with TFAPA at 180 degrees C, and of 0.019 S/cm with a membrane containing 70% (wt) TFAPA in SPEEK with a sulfortation degree of 86%. at 160 degrees C. Increasing either ionic liquid content or temperature reduced the mechanical strength of the composite membrane. Efforts were made to improve the strength of TFAPA/SPEEK composite membranes by cross-linking the SPEEK, which led to some strength enhancement at 110 degrees C and 130 degrees C. (c) 2008 Elsevier Ltd. All rights reserved.

引用

页码：4428 / 4434

页数：7

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