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Fabrication and synergistic control of ternary TiO2/MoO2@NC hollow spheres for high-performance lithium/sodium-ion batteries anodes

Author

Listed:
  • Al-Ansi, Nabilah
  • Salah, Abdulwahab
  • Lin, Jian
  • Yang, Guo-Duo
  • Sun, Hai-Zhu
  • Zhao, Liang

Abstract

Constructing nanostructured hollow materials is one of the most effective approaches to improve the cycling stability in batteries by accommodating the volume variation. Combined with the synergy of hybrid composition, high-performance energy storage materials are expected to be achieved. Herein, the anatase TiO2 is coated into a MoO2@N-doped carbon hollow sphere structure (denoted as TiO2/MoO2@NC HS) through a simple two-step method. The unique TiO2/MoO2@NC HS composite overcomes the poor cyclic stability of MoO2 and the low specific capacity of TiO2. Moreover, its hollow sphere structure facilitates electrolyte access and simultaneously provides shorter charge transportation paths, which assures rapid Li+/Na+ reaction kinetics. When utilized as an anode in LIBs /SIBs, TiO2/MoO2@NC HS composite exhibits a satisfactory electrochemical performance with high reversible capacities of 1423.9 mAh g−1 at 100 mA g−1 after 200 cycles in LIBs and reaches 572.7 mAh g−1 after 1000 cycles at 200 mAg−1 in SIBs. Furthermore, the full cell TiO2/MoO2@NC HS anode coupled with NCM111 cathode shows decent capacity with long cycling stability. This study offers a novel strategy to obtain anode composite that will find applications in energy storage devices.

Suggested Citation

  • Al-Ansi, Nabilah & Salah, Abdulwahab & Lin, Jian & Yang, Guo-Duo & Sun, Hai-Zhu & Zhao, Liang, 2023. "Fabrication and synergistic control of ternary TiO2/MoO2@NC hollow spheres for high-performance lithium/sodium-ion batteries anodes," Applied Energy, Elsevier, vol. 334(C).
    • Handle: RePEc:eee:appene:v:334:y:2023:i:c:s0306261923000557
    DOI: 10.1016/j.apenergy.2023.120691
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    Keywords

    Hollow sphere; MoO2@NC; TiO2; N-doped carbon; LIBs; SIBs;
    All these keywords.

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