Preparation of LiCoO2 and LiNixCo1-xO2 by Solid State Reaction Technique

LiCoO2 is generally used as cathode active material for the lithium based batteries. Due to the extraordinary properties of nanostructure materials, researchers focus on the synthesis of Nano structured cathode, anode and electrolyte materials. In this study, we aimed to have LiCoO2 nanostructures prepared by solid state reaction technique and investigate crystal structure. We examined the effect of calcinated time on the crystallization; therefore samples were prepared in the same conditions and calcinated at 900ºC but in different calcinated times. Obtained results were discussed. Then, nickel doped LiCoO2 was prepared with the same technique and under same conditions. Subsequently, the effect of nickel dopant was evaluated. Thermal stability of the LiCoO2 precursor powders evaluated by TGA/DTA analysis using Netzsch STA 409 and heating rate was adjusted 10°C/min up to 900°C in air atmosphere. Obtained crystal structures were investigated with XRD, surface morphology was investigated by SEM and results were discussed.