Barbara Scherrer, Meike V.F. Schlupp, Dieter Stender, Julia Martynczuk, Jan G. Grolig, Huan Ma, Peter Kocher, Thomas Lippert, Michel Prestat and Ludwig J. Gauckler On Proton Conductivity in Porous and Dense Yttria Stabilized Zirconia at Low Temperature Advanced Functional Materials 23
The electrical conductivity below 400 °C of porous yttria stabilized zirconia (YSZ) deviates from the oxygen-ion conductivity due to proton conduction via chemisorbed water in the form of hydroxyl groups at the inner surface. Below 120 °C, proton conductivity via physisorbed water in the nanoporous microstructures sets in (Grotthuss mechanism). Dense thin films show oxygen-ion conductivity only and no proton conductivity is present.
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