Abstract
In this paper, we synthesized rutile TiO2 nanorods by hydrolysis of TiCl4 ethanolic solution in water at 50 °C. Scanning electron microscopy and transmission electron microscopy images show that the as-prepared sample was consisted of nanoflowers of about 500 nm in sizes, and each petal of nanoflowers was assembled by several nanorods. We tested the electrochemical properties of the rutile TiO2 nanorods as an anode material for lithium-ion batteries. The rutile TiO2 nanorods exhibited a large initial discharge capacity of 223 mA h g−1, and the stabilized capacity was as high as 170 mA h g−1 after 100 cycles. These improved electrochemical performances may be attributed to the shorter diffusion length for both the electron and Li+, and the large electrode–electrolyte contact area offered by the nanorods with a large specific surface area, which facilitated the lithium ions insertion and extraction.
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Acknowledgments
This work was financially supported by the Fundamental Research Funds for the Central Universities (JUSRP11102, JUSRP20903, and JUSRP31101), the National Natural Science Foundation of China (51006046), the Natural Science Fundation of Jiangsu Province (BK2010140), and the Research Fund for the Doctoral Program of Higher Education of China (200802951011 and 20090093110004).
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Qiao, H., Luo, Q., Wei, Q. et al. Electrochemical properties of rutile TiO2 nanorods as anode material for lithium-ion batteries. Ionics 18, 667–672 (2012). https://doi.org/10.1007/s11581-012-0672-5
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DOI: https://doi.org/10.1007/s11581-012-0672-5