Preparation and Electrode Formulations of Lithium Titanate
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摘要: 采用高温固相法制备了钛酸锂负极材料,通过XRD、SEM测试方法,对制备的钛酸锂材料进行物相分析与形貌表征。运用三种不同电极配方组装成扣式电池,对电极的容量、倍率、循环、交流阻抗进行测试,发现LTO-1电极电化学性能最好,1 C倍率循环100次容量保持率为97.7%,8 C倍率放电容量可达147.7 mAh/g。Abstract: In this paper,lithium titanate anode materials were prepared by high temperature solid state synthesis.The phase and morphology of the obtained lithium titanate were characterized by X-ray diffraction(XRD) and scanning electron microscopy(SEM),respectively.Three different electrode formulations were used to assemble coin cells,for measuring the capacity,ratio,cycle and AC impedance of the anode materials.The electrochemical performances of LTO-1 electrode were found to be the best,with 97.7% of capacity retention after 100 cycles at 1C of ratio and 147.7 mAh/g of discharge capacity at 8C of ratio.
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