Kinetic Behavior of LiFePO₄/C Thin Film Cathode Material for Lithium-Ion Batteries

LiFePO₄ was prepared in a solid state synthesis with various levels of carbon content. LiFePO₄/C thin films were obtained via magnetron sputtering. The surface morphology and structure was examined. Electrochemical properties of LiFePO₄/C were studied, by using cyclic voltammetry, chronopotentiometry and electrochemical impedance spectroscopy. Thin films acquired show a potential use as a cathode in lithium ion batteries, displaying charge capacity up to 34 mAh g^-1.