Electrochemical performances of lithium-ion coin cell based on Li4Ti5O12 anode

Abstract

Recently many portable devices need electrical energy which instant and high capacity. Lithium-ion battery is one of very popular as mobile electrical energy source for them. This experiment focused to elaborate the electrochemical performances of Lithium-Ion (LI) coin cell based on Li4Ti5O12 (LTO) Anode with variation of calcination holding time (2, 4 and 6 hours) at temperature 900°C. They are electrical conductivity, specific capacity and coefficient of ion diffusion. Sol-Gel method and doctor Blade technique were used to produce LTO anode material. Vacuum technique was used to assembly LI coin cell. Electrochemical Impedance Spectroscopy and Cyclic Voltammetry were used to measure the electrochemical performances of theses coin cells. The best result of these experiments showed that coefficient of ionic diffusion is 3.48×10−4 cm2/S, the specific capacity value is 304 mAh/g and electrical conductivity value is 6.87×10−3 S/cm. So, this experiment has shown strongly a prospective for application in the future to produced commercially lithium-ion coin cells.