Abstract
LiMn2O4-based spinels are of great interest as positive electrode materials for lithium ion batteries. LiCo x Mn2−x O4 (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/LiCo x Mn2−x O4 cells, the electrochemical features of LiCo x Mn2−x O4 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 LiCo x Mn2−x O4 (x = 0.0, 0.1, 0.2, 0.3, and 0.4) electrodes.
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