SPPSU-based hybrid proton conducting polymeric electrolytes for intermediate temperature PEMFCs

Silvia Licoccia*, M. Luisa Di Vona, Alessandra D'Epifanio, Zakarya Ahmed, Serafina Bellitto, Debora Marani, Barbara Mecheri, Catia de Bonis, Marcella Trombetta, Enrico Traversa

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

Polyphenylsulfone (PPSU) was reacted with SiCl4 to afford silylated telechelic polymers having different inorganic content, which were sulfonated to different degrees (0.05 ≤ DS ≤ 2) using H2SO4 or ClSO3Si(CH3)3. A class II organic-inorganic hybrid polymer was then synthesized via cross-linking through Si-O-Si bonds generated by non-hydrolytic sol-gel reactions. The physicochemical properties of the hybrid were suitable for the preparation of self-standing, flexible and homogeneous membranes which were characterized ATR/FTIR spectroscopy demonstrating the formation of covalent bonds between the organic and inorganic components and the absence of dispersed inorganic silicon. The electrochemical performance was analyzed by electrochemical impedance spectroscopy which showed adequately high conductivity values to make the hybrid polymer a suitable candidate for application as electrolyte in PEMFCs operating at T > 100 °C.

Original languageEnglish (US)
Pages (from-to)79-83
Number of pages5
JournalJournal of Power Sources
Volume167
Issue number1
DOIs
StatePublished - May 1 2007

Keywords

  • Electrical properties
  • Fuel cells
  • Membranes
  • Nanocomposites
  • Sol-gel processes

ASJC Scopus subject areas

  • Electrochemistry
  • Fuel Technology
  • Materials Chemistry
  • Energy (miscellaneous)

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