The sol-gel methodology is employed for the preparation of chitosan added carbon-coated Li4Ti5O12 anode material with improved electrochemical properties for the lithium ion battery applications. The XRD shows that the coating of carbon does not influence the formation of Li4Ti5O12 and the carbon coating on the surface of lithium titanate, Li4Ti5O12 are confirmed by XPS, TEM and Nano-SIMS. A charge/discharge test performed at 0.1 oC and 0.2 oC hour rate, shows that the rate capability and cycle performance are improved due of the chitosan addition which produced carbon coating on the surface of the Li4Ti5O12 material. Similarly the chitosan added carbon-coated Li4Ti5O12 show higher specific capacity 142 mAhg-1 with superior cycling properties against uncoated Li4Ti5O12 material 132 mAhg-1. Also the carbon coating improves the overall electrochemical properties including discharge capacity, cyclability and rate capability against pure Li4Ti5O12

Keywords: Lithium-ion batteries, Lithium titanate, Sol-gel reaction, Carbon-coating, Electrochemical properties, Nano secondary ion mass spectrometry.