Abstract
Lithium titanate is synthesized from titanium isopropoxide and lithium nitrate solution via sol–gel processes. The obtained nanocrystalline lithium titanates were then subjected to electroless deposition in order to obtain Cu/Li4Ti5O12 nanocomposite structures. The crystalline structure and morphological observation of the as-synthesized Li4Ti5O12 are characterized by X-ray diffraction (XRD) and scanning electron microscopy, respectively. It is demonstrated that the electrochemical performance is significantly improved by the copper deposition onto lithium titanate structure. The copper-coated lithium titanate exhibits a stable capacity of 170 mAh g−1 at 1 C. Besides, the reversible capacity at 80 C remains over half of that at 1 C. The superior C-rate performance is associated with the copper/lithium titanate nanocomposite structure, facilitating lithium transportation ability during cycling.
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Acknowledgments
This work is supported by the Scientific and Technological Research Council of Turkey (TUBITAK) under the contract number 111M021—Improving the Capacity of Li-Ion Batteries by Using New Semi-Conducting Metal Oxide Based Anodes. The authors thank the TUBITAK MAG workers for their financial support.
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Erdaş, A., Özcan, Ş., Nalci, D., Güler, M.O., Akbulut, H. (2015). Nanocomposite Based on Li4Ti5O12 Structures for High-Rate Li-Ion Battery Applications. In: Dincer, I., Colpan, C., Kizilkan, O., Ezan, M. (eds) Progress in Clean Energy, Volume 2. Springer, Cham. https://doi.org/10.1007/978-3-319-17031-2_2
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DOI: https://doi.org/10.1007/978-3-319-17031-2_2
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