Synthesis and characterization of non-stoichiometric compound LiCo1−x−yMgxAlyO2 (0.03⩽x and y⩽0.07) for lithium battery application

In this paper synthesis and characterization of non-stoichiometric polycrystalline compound LiCo1−x−yMgxAlyO2 (0.03⩽x and y⩽0.07) for lithium battery application are reported. The structural and vibrational characterization of the polycrystalline powders are carried out using XRD, FTIR and Raman Scattering spectroscopy. The transport properties of LiCo0.90Mg0.05Al0. 05O2 polycrystalline powders are investigated using DC conductivity measurements and TEP measurements. The Li/LiCo0.90Mg0.05Al0. 05O2 are tested by galvanostatic charge–discharge techniques in the potential range 2.0–4.2 V.