Microwave solid-state synthesis of spinel Li4Ti5O12 nanocrystallites as anode material for lithium-ion batteries

被引:134
作者
Li, Juan [1 ,2 ]
Jin, Yong-Li [1 ]
Zhang, Xiao-Gang [3 ]
Yang, Hui [1 ]
机构
[1] Xinjiang Univ, Inst Appl Chem, Urumqi 830046, Peoples R China
[2] Xi An Jiao Tong Univ, Sch Sci, Xian 710049, Peoples R China
[3] Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 210016, Peoples R China
基金
中国国家自然科学基金;
关键词
spinel Li4Ti5O12; microwave method; nanocrystal lite; anode material; lithium-ion batteries;
D O I
10.1016/j.ssi.2007.10.012
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
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.
引用
收藏
页码:1590 / 1594
页数:5
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