Rod-Like LiMn2O4 Evolved from Porous Spherical Flower-Like Carbonate Precursors
Spinel LiMn2O4 was prepared by solid state reaction from composite carbonate precursors Li2CO3 and MnCO3, which were obtained by coprecipitation method. The physicochemical properties of spinel LiMn2O4 and its precursor were investigated by simultaneous thermogravimetry-differential scanning calorimetry (TG-DSC), X-ray diffraction (XRD), scanning electron micrographs (SEM) and galvanostatic charge-discharge test, respectively. The carbonate precursors demonstrate the porous spherical flower-like morphology, and spinel LiMn2O4 shows the rod or rod clusters-like one with different particle sizes. The spinel LiMn2O4 prepared from composite carbonate precursors delivers an initial discharge capacity of 115 mAh/g with excellent capacity retention, indicating an attractive application in the high-power lithium-ion batteries.
Xiaochun Tang, Xiaohong Chen, Yuxiang Dong, Xiuguo Wei and Qingsheng Yang
H. L. Zhu et al., "Rod-Like LiMn2O4 Evolved from Porous Spherical Flower-Like Carbonate Precursors", Applied Mechanics and Materials, Vols. 291-294, pp. 771-777, 2013