Electrode and interface reactions in solid-state cells

Abstract

Several specific aspects of solid-state electrode reactions and of interface phenomena are described. The part played by electrochemical pseudocapacitances in the ac response of the electrodes is emphasized. A possible role of a double-layer alteration in the increased conductivity of diphasic systems is also proposed. The formation of an intermediate phase at the electrode interface is illustrated with results on β-alumina and on RbCu 4Cl 3I 2. Redox electrode reactions may be regarded as detrimental because of the electronic short-circuit they may induce in batteries. They can also be put to practical use in solid-state redox batteries.