Synthesis of li4ti5o12 (lto) by sol-gel method for lithium ion battery anode

Abstract

Li4Ti5O12 (LTO) is one of the material that has the potential as anode in lithium ion battery that is safe to use and has a long life cycle. In this research, LTO was synthesed by sol-gel method using oxalic acid as chelating material, it is expected to produce materials with smaller particles and homogeneous distribution. The LTO sol-gel compared to commercial LTO. Characterization was carried out by X-ray diffraction (XRD), scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS). The measurement of LTO battery performance is carried out by charge discharge and electron impedance spectroscopy. The sol-gel LTO has a purity of 99%, which is higher than 57% commercial LTO. The average particle size is 1 μm, and the conductivity is 7.6x10-7 S.cm-1. While commercial LTO has a purity of 57%, the average particle size is 30 μm and conductivity is 7.4x10-7 S.cm-1. Batteries with synthesized LTO anodes have a capacity of 25.9% higher in the first cycle and 110% higher in fifth cycles incomparison with batteries used commercial LTO anodes.