Lithium Ion Transfer at the Interface between Lithium-Ion-Conductive Solid Crystalline Electrolyte and Polymer Electrolyte

Lithium-ion transfer at the interface between the lithium-ion-conductive ceramic of (LLT) and the polymer electrolyte of polyethylene oxide (PEO) complexed with was studied by ac impedance spectroscopy for the system of The impedance ascribed to ion transfer through the interface was observed. The resistance due to the lithium-ion transfer at the interface was larger than those through phases of LLT and and the temperature dependence of the interfacial resistances showed Arrhenius-type behavior. The activation energy of the interfacial resistances was larger than those for lithium-ion conduction in LLT and The design of the ion-conductive ceramic and the polymer composite electrolytes is discussed based on the results. © 2004 The Electrochemical Society. All rights reserved.