Synthesis of LiCoO2 Prepared by Sol–gel Method

AbstractLiCoO2 was synthesized by sol–gel method using lithium acetate and cobalt acetate as the precursors and citric acid as the chelating agent. The solutions were stirred for different stirring times with a magnetic stirrer, followed by heating at 80°C under vigorous stirring until a viscous gel was formed. The as-formed gel was calcined at 700°C for 7 h in air. Structural analysis confirmed that the layered hexagonal structure of LiCoO2 was formed. The synthesized LiCoO2 exhibited the highest intensity, thereby confirming that 30 h is the optimum stirring time. Clear splitting of the (006)/(102) and (108)/(110) hexagonal doublets in the X-rays diffraction patterns indicated that the materials formed a well-ordered hexagonal structure. No impurity phases were observed in the range of stirring times studied probably because of the homogeneous mixing of the precursors