Abstract
Through a facile hydrothermal method and annealing in an Ar/H2 mixed atmosphere, reduced rutile TiO2 nanowires were prepared and utilized as anode in lithium-ion battery. We investigated the structure and morphology by means of transmission electron microscopy (TEM), X-ray diffraction (XRD), and Raman spectroscopy. The electrochemical properties (CV, LSV, C-rate, charge and discharge, and EIS test) was analyzed to validate the theoretically reliable performance at a high current rate. From Raman spectra, the Ti3+ was investigated during heat treatment, which was shown that the battery delivers a specific capacity of 50 mAh/g at 5 C. It is believed that the rate capability of electrochemical performance could be ascribed to the presence of oxygen vacancies. The promising approach endows the possibility to develop TiO2-based lithium-ion battery for high-power applications.
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