Preparation of LiMn2O4 by Sol-Gel Method and Its Properties

Lithium manganese oxide, as a cathode material for Li-ion battery, was prepared by the sol-gel method with Ala as a chelating agent. The powder samples were confirmed to be a single phase LiMn2O4 by X-ray diffraction (XRD) studies. The textural properties of the powder samples were examined by scanning electron microscope (SEM), showing that the powders mainly consist of rod-shaped particles with uniform particle sizes. The synthesis mechanism of LiMn2O4 was preliminarily investigated by FT-IR and TG-DTA etc. Electrochemical properties of the sample were evaluated with charge and discharge tests. The results show that the samples have excellent electrochemical properties.