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Proton exchange membrane based on polyperfluorosulfonic acid modified with sulfonamide groups

A. ANDRONIE1,* , S. ANTOHE2, S. IORDACHE1, S. STAMATIN1, A. CUCU1, A. CIOCANEA3, A. EMANDI4, E. Ur5, I. STAMATIN1

Affiliation

  1. University of Bucharest, Physics Department, 3Nano-SAE Research Centre, P.O. Box MG-38, 077125 Magurele, Romania
  2. University of Bucharest, Faculty of Physics, Mat&Devices Elect&Optoelctr Center, P.O. Box MG-11, 405 Atomistilor Str., 077125, Magurele, Romania
  3. Polytechnica University of Bucharest, 313 Splaiul Independenţei, 060042, Bucharest, Romania
  4. University of Bucharest, Faculty of Chemistry, Department of Inorganic Chemistry, 23 Dumbrava Rosie Str., RO-010184 Bucharest, Romania
  5. University of Bucharest, Faculty of Physics, 405 Atomistilor Str., 077125, Magurele, Romania

Abstract

Poly-perfluorosulfonic acid membranes modified with sulfonamide groups were investigated for proton conductivity for applications in fuel cell. The degree of cross-linking by sulfonoamide groups and thermal properties, such as glass transition and degradation were investigated by means of Fourier transform infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC) and thermo gravimetric analysis (TGA). The proton conductivity as function of relative humidity (RH) at fixed operating temperature (80 0C) reaches 37 mS/cm at 80% RH. The membrane obtained after cross-linking by aqueous ammonia treatment, followed by thermal treatment has an improved thermal stability by 58 0C..

Keywords

Proton exchange membrane, Sulfonoamide groups, Ionic conduction.

Citation

A. ANDRONIE, S. ANTOHE, S. IORDACHE, S. STAMATIN, A. CUCU, A. CIOCANEA, A. EMANDI, E. Ur, I. STAMATIN, Proton exchange membrane based on polyperfluorosulfonic acid modified with sulfonamide groups, Optoelectronics and Advanced Materials - Rapid Communications, 4, 11, November 2010, pp.1807-1810 (2010).

Submitted at: Oct. 14, 2010

Accepted at: Nov. 10, 2010