Abstract

Potentiostatic electrochemical experiments with liquid metal electrodes have been analyzed to provide values for the mixed electrical conduction parameters (PMion, ooo, Oo , Po,Po, and E O,C.) associated with commercial-grade ZrO2 + 3 to 4 wt pct CaO electrolytes. Good agreement between experimental and calculated values for the open-circuit cell voltage,E o. c., for relatively high oxygen concentrations in the melt demonstrates that the currently accepted interpretation of electronic conduction in solid electrolytes is valid. In addition, these results provide an experimental verification that n-type electronic conductivity is proportional toPo2-1/4.

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