In this work, Li2CoTi3O8 nanofibers and Li2CoTi3O8·CoTiO3·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 250~300 nm and 150~200 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.
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The work was supported by the National Natural Science Foundation of China (21571110), the NSF of Zhejiang province (LY18B010003), the NSF of Ningbo (2019A610002), the Foundation of State Key Laboratory of Structural Chemistry (FJIRSM, CAS, 20190028), and the K. C. Wong Magna Fund in Ningbo University.
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Liu, Y., Huang, S., Wang, C. et al. Li2CoTi3O8 and its composite nanofibers as high performance and long cycle lithium ion electrode materials. J Nanopart Res 22, 169 (2020). https://doi.org/10.1007/s11051-020-04908-5
- Anode materials
- Lithium ion batteries
- Energy storage