ELECTROCHEMICAL BIFUNCTIONAL SYSTEMS

Electrochemical reduction and oxidation of metal ions was shown to be accompanied by the formation of a film on the electrode/electrolyte su rface. The appearance of such a film which has mixed conductivity and is formed by oxide-hydroxide compounds of respective metal means the f ormation of a new self-organised electrode/film/electrolyte system. Ta king into account properties of both the film and its position, this s ystem is called as bifunctional electrical system since it behaves as electrolyte in respect to electrode and as electrode to electrolyte.