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Li(2)CoTi(3)O(8)and its composite nanofibers as high performance and long cycle lithium ion electrode materials
2020/7/31 11:15:41 admin

In this work, Li(2)CoTi(3)O(8)nanofibers and Li2CoTi3O8 center dot CoTiO3 center dot TiO2(LCT) composite nanofibers as anode materials in lithium-ion batteries (LIBs) were successfully prepared by a traditional electrospinning technology, and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), energy-dispersive spectrometer (EDS), X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA), and mappings. XRD confirms that the composite materials lattice planes well correspond to the patterns of Li2CoTi3O8, CoTiO3, and TiO2, respectively. SEM and TEM exhibits the fabricated composites are one-dimensional nanofibers with the diameter of 250 similar to 300 nm and 150 similar to 200 nm after annealing, respectively. The electrochemical properties of the materials for LIBs are investigated to indicate that the (LCT) composite nanofibers hold high reversible capacity of 201.68 mAh g(-1)after 120 cycles and high rate capability at different current densities. Li2CoTi3O8 center dot CoTiO3 center dot TiO2(LCT) composite nanofibers were prepared through a electrospinning, which hold high reversible capacity of 201.68 mAh g(-1)after 120 cycles and high rate capability at different current densities.

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