Synthesis and characterization of LiCoxMn2−xO4 powder by a novel CAM microwave-assisted sol–gel method for Li ion battery

LiMn2O4-based spinels are of great interest as positive electrode materials for lithium ion batteries. LiCoxMn2−xO4 (x = 0.0, 0.1, 0.2, 0.3, and 0.4) spinel phases have been synthesized by novel citric acid-modified microwave-assisted sol–gel method. The structural properties of the synthesized products have been investigated by X-ray powder diffraction and scanning electron microscopy. To improve the recharge capacity of Li/LiCoxMn2−xO4 cells, the electrochemical features of LiCoxMn2−xO4 compounds have been evaluated as positive electrode materials. The structural properties of Co-doped oxides are very similar to LiMn2O4 electrode. Techniques like cyclic voltammetry, charge–discharge and cycle life are also used to characterize the LiCoxMn2−xO4 (x = 0.0, 0.1, 0.2, 0.3, and 0.4) electrodes.