A structural study on ionic-liquid-based polymer electrolyte membranes
Journal article, 2007
We have investigated novel proton conducting membranes synthesized through the gelification of poly(vinylidene fluoride-co-hexafluoropropylene) in aprotic ionic liquids. Mobile protons were introduced by doping the system with the strong bis(trifluoromethanesulfonyl)imide acid (HTFSI), which is chemically compatible with the ionic liquids through the common TFSI- anion. The obtained membranes are thermally stable up to 115°C set by the melting of the polymer phase. At this temperature, the conductivity is on the order of 10-2 S cm-1. Raman and infrared spectroscopy show no chemical interactions between the components, indicating that the bulklike nature of the doped ionic liquids preserved within the membrane, as is the thermal stability and the high conductivity. © 2007 The Electrochemical Society.
Author
Anna Martinelli
Chalmers, Applied Physics, Condensed Matter Physics
Aleksandar Matic
Chalmers, Applied Physics, Condensed Matter Physics
Per Jacobsson
Chalmers, Applied Physics, Condensed Matter Physics
Lars Börjesson
Chalmers, Applied Physics, Condensed Matter Physics
M.A. Navarra
The Electrochemical Society
Sapienza University of Rome
S Panero
Sapienza University of Rome
The Electrochemical Society
B Scrosati
The Electrochemical Society
Sapienza University of Rome
Journal of the Electrochemical Society
0013-4651 (ISSN) 1945-7111 (eISSN)
Vol. 154 8 G183-G187Subject Categories
Other Engineering and Technologies
Condensed Matter Physics
DOI
10.1149/1.2745640