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Lithium storage properties of coaxial ITO-TiO2 nanotube composites
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    Abstract:

    TiO2 anode has received wide attention because of its good structural stability and safety during the charging and discharging of lithium-ion battery. However, the inherent poor conductivity of TiO2 limits its capacity and cycling stability at high current densities. In this paper, coaxial indium tin oxide-TiO2 nanotube complexes (ITO-TiO2NTs) were successfully prepared by vacuum mechanical press injection method and subsequent annealing treatment. As an anode material for Li-ion batteries, ITO-TiO2NTs exhibited a high capacity of 295.9 mAh g-1 after 350 cycles with a current density of 0.2 A g-1. The ITO acts as a conductive core in the three-dimensional structure, which improves the overall conductivity and facilitates the fast electron and Li-ion transfer, thus improving the cycling stability and multiplicity performance of the composite. The vacuum mechanical press injection method proposed in this paper provides a simple and efficient method for composite modification of TiO2 nanotube array thin film materials, which is of great significance.

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[Cheng Junjun. Lithium storage properties of coaxial ITO-TiO2 nanotube composites[J]. Rare Metal Materials and Engineering,2024,53(5):1429~1436.]
DOI:10.12442/j. issn.1002-185X.20230169

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History
  • Received:March 31,2023
  • Revised:April 19,2023
  • Adopted:April 27,2023
  • Online: May 28,2024
  • Published: May 22,2024