Influence of insulating coatings on the electrical conduction of cyclohexane

The electrical conduction of cyclohexane was studied between metal electrodes electrochemically coated with thin films of alumina or polyphenyleneoxide. The weak injection observed at short times after a dc voltage was applied is similar with electrodes either coated or not. We conclude that the injected ions are created in the liquid. After long times of voltage application, a large increase of the liquid conduction is caused by a strong injection from the coating.