Superprotonic KH(PO3H)-SiO2 composite electrolyte for intermediate temperature fuel cells

A. Bandarenka, Alexander S. Bondarenko, W. Zhou, Henricus J.M. Bouwmeester

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Novel thin film composite electrolyte membranes, prepared by dispersion of nano-sized SiO2 particles in the solid acid compound KH(PO3H), can be operated under both oxidizing and reducing conditions. Long-term stable proton conductivity is observed at not, vert, similar140 °C, i.e., slightly above the superprotonic phase transition temperature of KH(PO3H), under conditions of relatively low humidification (pH2O ≈ 0.02 atm).
Original languageUndefined
Pages (from-to)843-846
JournalJournal of power sources
Issue number2
Publication statusPublished - 2009


  • Composite
  • Fuel cells
  • Proton conductor
  • IR-71865
  • Solid acid
  • METIS-259135
  • Electrolyte

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