Journal
ELECTROCHIMICA ACTA
Volume 178, Issue -, Pages 871-876Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2015.08.051
Keywords
TiO2/carbon hollow spheres; anode materials; sodium-ion batteries
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TiO2/carbon hollow spheres (TiO2/C-HSs) have been successfully prepared using a template method. During the synthesis procedures, SiO2 spheres were used as template, titanium tert-butoxide and dopamine were used as TiO2 and carbon precursor, respectively. The TiO2/C-HSs were characterized by Xray diffraction (XRD), nitrogen adsorption-desorption measurements, scanning electron microscopy (SEM), transmission electron microscopy (TEM), thermogravimetry (TGA) measurements, and raman spectra analysis. When utilized as anode materials for sodium-ion batteries, the TiO2/C-HSs anode can deliver a high specific capacity and remarkable rate performance. The excellent electrochemical performance of TiO2/C-HSs can be ascribed to the hollow sphere structure, the existence of carbon and the large surface area and porous structure. (C) 2015 Elsevier Ltd. All rights reserved.
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