Charge/discharge and interfacial properties of Li/sub x/V/sub 3/O/sub 8//Li cells with polymer electrolyte

Abstract

The purpose of this study is to research and develop Li/sub x/V/sub 3/O/sub 8/ composite cathode for lithium polymer battery. We investigated electrochemical, interfacial properties and charge/discharge cycling of Li/sub x/V/sub 3/O/sub 8//SPE/Li cell. The radius of semicircle associated with the interfacial resistance of Li/sub x/V/sub 3/O/sub 8//SPE/Li cell increased very slowly during discharge process from 100% SOC to 90% SOC. And then the cell resistance was increased at discharge process from 10% SOC to 0% SOC. The discharge capacity based on Li/sub x/V/sub 3/O/sub 8/ was 212 mAh/g at 15th cycle. The Li/sub x/V/sub 3/O/sub 8//SPE/Li cell has a good properties.