Two-Phase LiCoO[sub 2] Oxides for Rechargeable Lithium Batteries

Abstract

There is a considerable improvement in energy density and rate capability of material when an inert ceramic material is introduced into this material as a distinct separate phase. Electrochemical performance as a function of ceramic content shows that high and optimum performance are obtained when concentration is at 2 mass %. Introduction of into also helps to achieve extended cycle life for materials. We show that by increasing rate capability and at the same time decreasing polarization at the cathode, increases in energy and specific capacities are obtained. © 2001 The Electrochemical Society. All rights reserved.