Electrode processes at metal/Ag I-Ag<inf>2</inf>MoO<inf>4</inf> solid electrolyte interface

Abstract

Solid electrolytes, the composition of which is 0.8AgI·o0.2Ag2MoO4 and 0.2Agl· ·0.8Ag2MoO4, were investigated by means of ac and dc electrochemical methods at room temperature and at elevated temperatures. Cyclovoltamograms of the both electrolytes on Pt and Ag electrodes are similar and show that fast Ag+ ⇋ Ag redox process and strong anodic passivation occur, due to which it seems that these electrolytes decomposition potential is much above the theoretical value. By means of Tafel analysis the equilibrium potentials, Ag+ ⇌ Ag redox process exchange currents, and the activation energy were determined. The nature of the electrode/electrolyte interface was investigated also on the basis of faradaic and capacitance currents measurements within 0.1 - 1 kHz frequency range. © 1983.