Performance characteristics of Ultralife's solid polymer rechargeable batteries

Abstract

Abstract Ultralife Batteries delivered the world's first commercial shipments of solid polymer rechargeable batteries in 1997. The battery consists of a Li x Mn 2 O 4 − based cathode, graphite anode and proprietary polymeric separator. Energy density of the batteries exceeds 120 W h kg −1 and 200 W h dm −3 at the C rate. Pulse capability up to 5 C has been demonstrated. More than 90% of the initial C rate capacity remains after 500 continuous cycles at room temperature. These solid polymer rechargeable batteries also show good low and high temperature performance and have good safety characteristics.