Equivalent weight and crystallinity effects on water content and proton conductivity in bis[(perfluoroalkyl) sulfonyl]imide-based ionomers

被引：27

作者：

Creager, SE ^{[1
]}

Sumner, JJ ^{[1
]}

Bailey, RD ^{[1
]}

Ma, JJ ^{[1
]}

Pennington, WT ^{[1
]}

DesMarteau, DD ^{[1
]}

机构：

[1] Clemson Univ, Dept Chem, Clemson, SC 29634 USA

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 1999年 / 2卷 / 09期

关键词：

D O I：

10.1149/1.1390862

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Water content and ionic conductivity data were acquired as a function of relative humidity for representative samples of a novel series of perfluorinated ionomers based on bis[(perfluoroalkyl)sulfonyl]imide. The humidity dependence of both water content and ionic conductivity correlates strongly with ionomer equivalent weight (EW); the higher EW ionomer (1205 g equiv(-1)) exhibited a much sharper drop in water content and ionic conductivity with diminished humidity than did the lower EW ionomer (1095 g equiv(-1)). This drop in water content and ionic conductivity at low humidity correlates with X-ray diffraction measurements which indicate a higher poly(tetrafluoroethylene)-like crystallinity in the higher EW ionomer. (C) 1999 The Electrochemical Society. S1099-0062(99)04-030-4. All rights reserved.

引用

页码：434 / 436

页数：3

共 17 条

[1] POLYMERIC PERFLUORO BIS-SULFONIMIDES AS POSSIBLE FUEL-CELL ELECTROLYTES [J].