Electrochemical Analysis of Lithium-Ion Transfer Reaction through the Interface between Ceramic Electrolyte and Ionic Liquids

Lithium-ion transfer through the interface between Li + -ion conductive ceramic electrolyte and ionic liquids was investigated by AC impedance method. Charge transfer resistance ( R ct ) was clearly observed and the interfacial activation energy was evaluated from the temperature dependency of R ct . The activation energy was strongly affected by the anion species of ionic liquids. Besides, cation species also showed some effect on the activation energy. These results indicate that the ion-ion interaction from wide region must be considered for the interfacial Li + -ion transfer when ionic liquid electrolytes are used.