Synthesis of Li 4 Ti 5 O 12 (LTO) by Sol-Gel Method for Lithium Ion Battery Anode

• Published in: IOP conference series. Materials Science and Engineering 2019-11, Vol.553 (1), p.12062
• Main Authors: Purwamargapratala, Yustinus, Sujatno, Agus, Sabayu, Yohanes Lugas, Kartini, Evvy
• Format: Article
• Language: English
• ISSN: 1757-8981; 1757-899X
• DOI: 10.1088/1757-899X/553/1/012062

Li 4 Ti 5 O 12 (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.