Anhydrous Proton Conducting Polymer Electrolytes Based on Poly(phosphonic acid)s and Oligomeric Triazole Compounds

  • Song, Myeong-Soo (Department of Chemistry, Seoul National University) ;
  • Lee, Sung-Il (Department of Chemistry, Seoul National University) ;
  • Bingoel Bahar (Max-Planck-Institute for Polymer Research) ;
  • Meyer Wolfgang H. (Max-Planck-Institute for Polymer Research) ;
  • Yoon, Do-Y. (Department of Chemistry, Seoul National University)
  • Published : 2006.10.13


In recent years, water-free polymer electrolyte membranes are attracting serious attention due to the possibility of the fuel cell operation at intermediate temperatures ($100{\sim}200^{\circ}C$). It was reported that phosphonic acids have proton conductivity under anhydrous conditions and in particular, relatively high proton conductivity could be obtained from the composite materials with heterocycles such as imidazole, pyrazole, etc. In this work, styrene based polymers, poly((4-vinylbenzyloxy)alkylphosphonic acid), which have phophonic acid group at the end of alkyl chain was synthesized. These polymers were analyzed in terms of thermal stability and proton conductivity. Additionally, cyclic oligosiloxanes tethered with triazole were prepared and analyzed.