Poly(ethylene oxide)-Based, Nanocomposite Electrolytes as Improved Separators for Rechargeable Lithium Polymer Batteries

The synthesis and the properties of nanocomposite polymer electrolytes based on low-particle size fillers having a high concentration of surface states are reported. These electrolytes that are formed by dispersing in a [PEO is poly(ethylene oxide)] matrix, show higher conductivity and, particularly, much higher lithium transference number than those of common, ceramic-free counterparts. These unique properties make the nanocomposite polymer electrolytes of particular interest as improved separators in novel types of lithium rechargeable batteries. This paper reports the performance of a battery using a as the polymer electrolyte and as the cathode. © 2002 The Electrochemical Society. All rights reserved.