Acid-organic base swollen polymer membranes

Citation
Jz. Sun et al., Acid-organic base swollen polymer membranes, ELECTR ACT, 46(10-11), 2001, pp. 1703-1708
Citations number
12
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
ELECTROCHIMICA ACTA
ISSN journal
00134686 → ACNP
Volume
46
Issue
10-11
Year of publication
2001
Pages
1703 - 1708
Database
ISI
SICI code
0013-4686(20010315)46:10-11<1703:ABSPM>2.0.ZU;2-2
Abstract
In this work, two different polymer membrane systems based on Nafion and Te flon were investigated as proton conductors for polymer membrane fuel cells . Water-free Nafion117 membranes swollen with different non-aqueous solvent s were prepared. The solvents included imidazole, imidazole-imidazolium sal t solutions, room temperature molten salts and molten salt-acid solutions. Teflon films were treated with a surfactant, or a Nafion solution, to impro ve their surface properties, and were subsequently swollen with phosphoric acid. Conductivity measurements were carried out on both the Nafion and Tef lon membranes. Conductivities in the range of 10(-3) S cm(-1) at around 100 degreesC were obtained. This is still an order of magnitude lower than the corresponding water swollen Nafion at 80 degreesC. (C) 2001 Elsevier Scien ce Ltd. All rights reserved.