Superprotonic KH(PO3H)–SiO2 composite electrolyte for intermediate temperature fuel cells |
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| Authors: | Alexander S Bondarenko Weihua Zhou Henny JM Bouwmeester |
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| Affiliation: | aInorganic Membranes, Faculty of Science and Technology & MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands |
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| Abstract: | 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  140 °C, i.e., slightly above the superprotonic phase transition temperature of KH(PO3H), under conditions of relatively low humidification (pH2O ≈ 0.02 atm). |
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| Keywords: | Fuel cells Electrolyte Composite Solid acid Proton conductor |
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