Effect of the doping time of the 1‐butyl‐3‐methylimidazolium ionic liquid cation on the Nafion membrane proprieties |
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| Authors: | Letícia G. da Trindade Letícia Zanchet Katiúscia M.N. Borba Josiane C. Souza Edson R. Leite Emilse M.A. Martini |
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| Affiliation: | 1. Institute of Chemistry, Porto Alegre, Brazil;2. Chemistry Dept, Federal University of S?o Carlos, S?o Carlos, Brazil |
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| Abstract: | Nafion membranes were prepared by incorporating in the polymer matrix the 1‐butyl‐3‐methylimidazolium (BMI+) ionic liquid cation at different doping levels. Increasing the doping time of the membranes with the ionic liquid results in increased incorporation of the BMI+ cation but a decrease in the bulk conductivity. The thermogravimetric analysis shows that the BMI+ cation incorporation increases the thermal stability of the membranes. The higher discharge efficiency of the fuel cell at 80°C was obtained by using Nafion membrane after 15 minutes of doping in the ionic liquid solution. |
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| Keywords: | ionic liquid Nafion PEMFC proton exchange membrane |
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