Variation of Carbon Coating on Li2Na2Ti6O14 as Anode Material of Lithium Battery

Abstract

Li₂Na₂Ti₆O₁₄ was developed from Li₅Ti₄O₁₂ as a good active material for anode of the lithium battery. Li₂Na₂Ti₆O₁₄ was prepared by a preliminary formation of Li₂Na₂Ti₆O₁₄ through solid state reaction with calcination temperature at 700 °C, and sintering temperature at 800 oC for 8 hours. By analysis of XRD patterns, Li₂Na₂Ti₆O₁₄ shows spinel structure which similar as Li₅Ti₄O₁₂. Carbon coating on Li₂Na₂Ti₆O₁₄ was done by using pyrolysis method at a temperature of 700 oC for 2 hours. The process of carbon coating was done under variation of comparison between Li₂Na₂Ti₆O₁₄ and tapioca powder as a carbon source, i.e. 8:1, 10:1 and 12:1. The working voltage of Li₂Na₂Ti₆O₁₄/C product was 1,2 volt. The other analysis were conductivity, cyclic voltammeter, and charge – discharge.