|
authors |
Cardoso, MA; Fernandes, M; Rodrigues, LC; Leones, R; Silva, MM; Bermudez, VD |
|
nationality |
International |
|
journal |
ELECTROCHIMICA ACTA |
|
keywords |
ORGANICALLY MODIFIED SILICATES; FUEL-CELL ELECTROLYTES; MEMBRANES; POLYMERIZATION |
|
abstract |
A wide range of concentrations of the [EIm][TfO] proton ionic liquid (PIL) were for the first time incorporated into a poly(oxyethyelene) (POE)/siloxane hybrid host matrix (d-U(2000)) belonging to the di-ureasil family. The synthesis procedure adopted, involving the lowest amount of water possible, resulted in the formation of essentially anhydrous electrolytes at certain PIL levels. The optimized sample d-U(2000)/[EIm][TfO] 50 (where 50 represents the ratio in % of the mass of [EIm][TfO] per mass of POE precursor) is amorphous, thermally stable up to 200 degrees C, displays good mechanical properties and exhibits an ionic conductivity of 3.2 x 10(-4) and 4.3 x 10(-3) S cm(-1) at 20 and 186 degrees C, respectively. These features have persisted for more than three years. These new electrolytes appear quite attractive for applications in fuel cells operating under non-humidified conditions. (C) 2014 Elsevier Ltd. All rights reserved. |
|
publisher |
PERGAMON-ELSEVIER SCIENCE LTD |
|
issn |
0013-4686 |
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year published |
2014 |
|
volume |
147 |
|
beginning page |
288 |
|
ending page |
293 |
|
digital object identifier (doi) |
10.1016/j.electacta.2014.09.125 |
|
web of science category |
Electrochemistry |
|
subject category |
Electrochemistry |
|
unique article identifier |
WOS:000346178800037
|
