Abstract
Through elaborate design, a new rechargeable lithium ion battery has been developed by comprising a surface-treated Li1.2Mn0.54Ni0.13Co0.13O2 cathode and a nano-structured Li4Ti5O12 anode. After precondition Na2S2O8 treatment, the initial coulombic efficiency of Li1.2Mn0.54Ni0.13Co0.13O2 cathode has been significantly increased and can be compatible with that of the nano-structured Li4Ti5O12 anode. The optimization of structure and morphology for both active electrode materials result in their remarkable electrochemical performances in respective lithium half-cells. Ultimately, the rechargeable lithium ion full battery consisting of both electrodes delivers a specific capacity of 99.0 mAh g−1 and a practical energy density of 201 Wh kg−1, based on the total weight of both active electrode materials. Furthermore, as a promising candidate in the lithium ion battery field, this full battery also achieves highly attractive electrochemical performance with high coulombic efficiency, excellent cycling stability and outstanding rate capability. Thus the proposed battery displays broad practical application prospects for next generation of high-energy lithium ion battery.
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