Zohre Taherkhani - Polymer Engineering Department, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran, Iran
Alireza Sharif - Polymer Engineering Department, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran, Iran
Mahdi Abdollahi - Polymer Engineering Department, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran, Iran
Mohammad Mahdi Hasani-Sadrabadi - Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran

An ionic conductivity equation was combined with a thermodynamic model to predict proton conductivity of the Nafion 117 membrane. Proton conductivity was calculated at different volume fractions of water (water content) and temperatures. The results showed that proton conductivity of the Nafion 117 membrane is enhanced by increasing the temperature and water volume fraction. A good agreement was observed between the theoretical and experimental data over the temperature range of 298-353 K and water volume fraction range of 0.1-0.4

proton conductivity, modeling, Nafion117, proton exchange membrane, fuelcell