L. Zanchet, L. G. da Trindade, William Bariviera
Feb 28, 2020
Citations
0
Influential Citations
19
Citations
Journal
Journal of Materials Science
Abstract
The 3-triethylammonium propane sulfonic (TEA-PS + ) cation associated with the anion tetrafluoroborate, hydrogen sulfate or trifluoromethanesulfonate leads to the formation of the new protic ionic liquids (ILs) 3-triethylammonium propane sulfonic acid tetrafluoroborate (TEA-PS·BF 4 ), 3-triethylammonium propane sulfonic acid hydrogen sulfate (TEA-PS·HSO 4 ) and 3-triethylammonium propane sulfonic acid trifluoromethanesulfonate (TEA-PS·CF 3 SO 3 ), respectively. These ILs are used to produce Nafion/IL composite membranes with 2.5, 5 or 10 wt% of IL. The results show that the IL addition improves the thermal stability, hydrophilicity and conductivity. Experiments performed with the Nafion/IL membranes in a single proton exchange membrane fuel cell at 100 °C indicate that the membrane containing 5 wt% of TEA-PS·HSO 4 is the most efficient one producing an increase of the maximum current density of approximately 230% when compared to the pristine membrane.