A novel method with low-cost Fe_2O_3 to synthesize small size LiFePO_4 by carbothermal reduction method

摘要

The phase-pure LiFePO_4/C cathode materials have been successfully fabricated by precursor containing Fe_2O_3 coated with polyaniline through carbothermal reduction method. The polyaniline coating at Fe_2O_3 could restrict the growth of crystal and subsequently become electric carbon at higher synthesis temperature. Compared with conventional carbothermal reduction method, the sample showed a better capacity and less than 3% capacity fading after 30 cycles at various charge and discharge rate.