Oscillations in the emf of solid-state electrochemical oxygen sensors

Abstract

Oscillations have been found in the emf of ZrO2 electrochemical cells used for high-temperature oxygen sensing in nonequilibrium CO,O2 environments. This behavior is shown to arise from an oscillation in the platinum-catalyzed oxidation of CO. The use of a ZrO2 cell provides a new technique for studying oscillating reactions of this type.