期刊
SOLID STATE IONICS
卷 178, 期 29-30, 页码 1590-1594出版社
ELSEVIER
DOI: 10.1016/j.ssi.2007.10.012
关键词
spinel Li4Ti5O12; microwave method; nanocrystal lite; anode material; lithium-ion batteries
Spinel Li4Ti5O12 nanocrystallites as anode material for lithium-ion batteries were synthesized by microwave method with Li2CO3 and TiO2 as reactants. The morphology and microstructure of the samples were characterized by X-ray diffraction (XRD) analysis, transmission electron microscope (TEM), scanning electron microscopy (SEM) and Fourier transformed infrared (FT-IR). The electrochemical properties of the samples were studied by cyclic voltammogram (CV) and galvanostatic charge/discharge tests. It was shown that the purity and the crystallinity of the composite oxides were dependent on the irradiation power and time and the crystallites were regular sphere-like nanoparticles about 40-50 nm in size. The spinel Li4Ti5O12 anode has a stable voltage plateau, high discharge capacity and an excellent cyclibility. (c) 2007 Elsevier B.V. All rights reserved.
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