Electrochemical and Thermal Studies of LiFePO4 Cathode in Lithium-Ion Cells

The carbon-coated LiFePO4 Li-ion cathode material was studied for its electrochemical and thermal performance. This electrode exhibited a reversible capacity corresponding to more than 90% of the theoretical capacity, when cycled between 2.5 V and 4.0 V. The material also showed good capacity retention at high powers implying that the carbon coating improves the electronic conductivity and hence the cycling of this material. Thermal studies were also investigated by Differential Scanning Calorimeter (DSC) and Accelerating Rate Calorimeter (ARC) and compared with the commonly used lithium metal oxide cathodes with layered structure.