Artículos de revistas
3-Triethylammonium propane sulfonate ionic liquids for Nafion-based composite membranes for PEM fuel cells
Fecha
2020-06-01Registro en:
Journal of Materials Science, v. 55, n. 16, p. 6928-6941, 2020.
1573-4803
0022-2461
10.1007/s10853-020-04454-4
2-s2.0-85080977937
Autor
Universidade Federal do Rio Grande do Sul
Universidade Estadual Paulista (Unesp)
Universidade de São Paulo (USP)
Institución
Resumen
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·BF4), 3-triethylammonium propane sulfonic acid hydrogen sulfate (TEA-PS·HSO4) and 3-triethylammonium propane sulfonic acid trifluoromethanesulfonate (TEA-PS·CF3SO3), 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·HSO4 is the most efficient one producing an increase of the maximum current density of approximately 230% when compared to the pristine membrane.