Fine Lithium Iron(II) Phospho-Olivine Prepared by Different Methods
The electroactive materials LiFePO4, Li0.98Mg0.01FePO4 and carbon-coated LiFePO4 were synthesized by an improved solid-state reaction and by a sol-gel process and characterized by XRD, SEM, and their electrochemical performance. The reaction conditions favor stabilization of the iron as Fe2+ as well as offering some control of the product morphology and particle size. Electrochemical evaluation of the products reveals a lithium insertion plateau around 3.4V vs Li. Excellent electro- chemical properties in terms of capacity, reversibility and cycling stability have been achieved for doped LiFePO4 synthesized by an improved solid-state reaction. The two methods all produced pure, fine and homogeneous particles.
Wei Pan and Jianghong Gong
H. G. Sun, H. Liu, W. Liu, Y. L. Luan, "Fine Lithium Iron(II) Phospho-Olivine Prepared by Different Methods", Key Engineering Materials, Vols. 336-338, pp. 521-523, 2007