POSITIVE ELECTRODE USING OLIVINE GROUP ACTIVE MATERIAL AND RECHARGEABLE BATTERY WITH THE SAME

摘要

A positive electrode using olivine-based active material is provided to increase the storage capacity and recovery capacity by decreasing the high temperature discharge capacity according to the time and the decrease rate of interface resistance. A secondary battery comprises an electrode assembly and a case. The electrode assembly comprises a positive electrode, negative electrode and a separator. The case has a case within. The positive electrode has a positive active material layer(20) including the cobalt (Co). An olivine-based positive active material layer(30) is laminated on at least a part of the surface.