Synthesis and characterization of LiFePO4 cathode for lithium-ion batteries.
Published: 2005
Language: eng
Number of pages: 76
Description: In-situ carbon coated LiFePO4 composite was synthesized by a solid-state method. The carbon coating was performed during specific stage/stages of the synthesis process that was/were strategically chosen to make the coating intimate and homogeneous, and to minimize particle size. The crystal structure of LiFePO4 was characterized by XRD and confirmed to be olivine orthorhombic, and the lattice parameters were determined by Rietveld refinement. The crystallinity of LiFePO4  structure affects the electrochemical performance independently of the coating effect. The results of electrochemical testing showed that carbon coating significantly enhances specific capacity, particularly at high rates. The LiFePO4 sample that was in-situ carbon coated at two different stages of the synthesis process had the best electrochemical performance: a specific capacity of 120 mAh/g at rate C/3 and a capacity retention of over 100% at the end of 50 cycles.
Notes: Source: Masters Abstracts International, Volume: 44-02, page: 1017.

Thesis (M.A.Sc.)--University of Toronto, 2005.

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