LITHIUM RECHARGEABLE BATTERY WITH EXCESS LiFePO4 BASED CATHODE MATERIAL RELATIVE TO Li4Ti5O12 BASED ANODE MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide a lithium rechargeable battery which comprises an excess of LiFePObased cathode material relative to LiTiObased anode material.SOLUTION: A lithium rechargeable battery comprises electrochemical cells connected in series. Each of the electrochemical cells has a LiTiObased anode, a LiFePObased cathode, an electrolyte, and a separator separating the anode from the cathode. Each electrochemical cell comprises an excess of LiFePObased cathode material relative to LiTiObased anode material to prevent at least one of the electrochemical cells from being permanently damaged in an over-discharge state.