Polymer-supported 1-butyl-3-methylimidazolium trifluoromethanesulfonate and 1-ethylimidazolium trifluoromethanesulfonate as electrolytes for the high temperature PEM-type fuel cell

0391269 - ÚMCH 2014 RIV US eng J - Journal Article
Mališ, J. - Mazúr, P. - Schauer, Jan - Paidar, M. - Bouzek, K.
Polymer-supported 1-butyl-3-methylimidazolium trifluoromethanesulfonate and 1-ethylimidazolium trifluoromethanesulfonate as electrolytes for the high temperature PEM-type fuel cell.
International Journal of Hydrogen Energy. Roč. 38, č. 11 (2013), s. 4697-4704. ISSN 0360-3199. E-ISSN 1879-3487
Institutional support: RVO:61389013
Keywords : 1-butyl-3-methylimidazolium * trifluoromethanesulfonate * 1-ethylimidazolium
Subject RIV: CD - Macromolecular Chemistry
Impact factor: 2.930, year: 2013

Membranes were prepared by casting a solution of a polymer and 1-butyl-3-methylimidazolium trifluoromethanesulfonate or 1-ethylimidazolium trifluoromethanesulfonate as typical representatives of aprotic and protic ionic liquids and then evaporating the solvent. The following two polymers were used: poly(vinylidene fluoride-co-hexafluoropropene) and Nafion. The prepared membranes were tested with respect to their ionic conductivity in dependence on temperature under dry conditions and under humidification. Subsequently, selected membranes were tested in a laboratory fuel cell. Whereas satisfactory ionic conductivity was observed for the prepared membranes, temperatures above 100 °C resulted in a low output performance of the fuel cell for all membrane materials under study. The main reason proposed for this is the low MEA conductivity for hydrogen ions.
Permanent Link: http://hdl.handle.net/11104/0222083