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Effect of the doping time of the 1‐butyl‐3‐methylimidazolium ionic liquid cation on the Nafion membrane proprieties
Author(s) -
Trindade Letícia G.,
Zanchet Letícia,
Borba Katiúscia M.N.,
Souza Josiane C.,
Leite Edson R.,
Martini Emilse M.A.
Publication year - 2018
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.4096
Subject(s) - ionic liquid , membrane , nafion , thermogravimetric analysis , doping , thermal stability , materials science , ionic conductivity , polymer , ionic bonding , chemical engineering , inorganic chemistry , analytical chemistry (journal) , ion , chemistry , electrochemistry , electrode , chromatography , organic chemistry , composite material , electrolyte , catalysis , biochemistry , optoelectronics , engineering
Summary 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.