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Publication Type : Journal Article
Thematic Areas : Nanosciences and Molecular Medicine
Publisher : RSC Advances
Source : RSC Advances, Volume 2, Number 2, p.531-537 (2012)
Keywords : Capacity loss, Capacity retention, Capacity value, Current rate, Discharge-charge, Electrospuns, Functionalized multi-walled carbon nanotubes, Grain (agricultural product), Li-ion batteries, Lithium batteries, Lithium compounds, Lithium-ion battery, Nano-fibrous, Nanofibers, Nanostructures, Raman spectroscopy, Sintering, Sintering process, Surface area measurement, TiO, Titanium dioxide, transmission electron microscopy, X ray diffraction, X ray photoelectron spectroscopy
Campus : Kochi
School : Center for Nanosciences
Center : Nanosciences
Department : Nanosciences and Molecular Medicine
Year : 2012
Abstract : Nanofiber- and rice grain-shaped TiO 2 nanostructures and their composites with functionalized multiwalled carbon nanotubes were fabricated by electrospinning and subsequent sintering process for applications in Lithium ion batteries. The fabricated nanostructures were characterized by X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy, scanning-and transmission electron microscopy and surface area measurements. All nanostructured materials showed average discharge-charge plateaux of 1.75 to 1.95V. The nanofibrous- and rice grain-shaped TiO 2 nanomaterials showed stable performances of 136 (± 3) mAh g -1 and 140 (± 3) mAh g -1, respectively, at the end of 800 cycles in the cycling range of 1.0-2.8 V vs. Li at a current rate of 150 mA g -1. TiO 2-CNT (4 wt.%) composites showed a slightly lower capacity value but better capacity retention (8% capacity loss between 10-800 cycles). We believe that the present long term cycling materials would have wide interests in lithium ion batteries research. © 2012 The Royal Society of Chemistry.
Cite this Research Publication : P. Zhu, Wu, Y., M.V. Ramana Reddy, A. Nair, S., Chowdari, B. V. R., and Ramakrishna, S., “Long term cycling studies of electrospun TiO 2 nanostructures and their composites with MWCNTs for rechargeable Li-ion batteries”, RSC Advances, vol. 2, pp. 531-537, 2012.