Pouch-typed cell from Li-rich LiFePO4 prepared by low-cost carbothermal reduction method

Аннотация

Lithium iron phospho-olivine cathode material with optimized lithium amount for lithium-ion batteries was successfully prepared from low cost Fe₂O₃ as raw materials by thermal reduction method. The as-obtained material showed a reversible discharge capacity of 153.8 mAh g^–1 in the voltage window of 2.0–4.2 V at half-cell level. The pouch-typed cells with prepared Li_1.05FePO₄ were assembled to investigate electrochemical performance at level of full-cell. The results show that the assembled pouch-typed full-cells present better rate capability and cycle life. The low-cost approach reported here firstly sheds light on application of mass production of olivinestructured LiFePO₄ at level of full-cell.