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Fabrication of cactus-like CNT/SiO2/MoO3 ternary composites for superior lithium storage

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  • Zheng, Yuhuan
  • Liu, Zhikang
  • Liu, Bin
  • Wang, Shan
  • Xiong, Chuanxi

Abstract

Advanced electrode materials with high rate capability and long cycling stability are highly pursued for high-performance lithium-ion batteries (LIBs). In this study, cactus-like CNT/SiO2/MoO3composites are synthesized via self-assembly followed by in-situ carbonization, wherein the CNT, SiO2, and MoO3 are uniformed distributed. Such unique structure can effectively alleviate the strain during cycling, reduce the Li+ diffusion time, and provide more active sites for the interaction of ions, thus allowing much better rate capability. Specifically, CNTs act as the cactus veins to rapidly transport the electrons, while the SiO2 and MoO3 particles located in the cactus leaf-like region are used to store lithium. In addition, the MoO3 can play as a supporter to minimize the change of the whole structure and further stabilize the electrode because of the lower strain during lithiation. As a consequence, the CNT/SiO2/MoO3electrode delivers a high specific capacity (700 mAh g−1at 1000 mA g−1over 500 cycles) and long cycle life (320 mAh g−1at 5000 mA g−1within 800 cycles). It is possible that this research could provide new insights for developing novel anode materials with superior lithium storage capability.

Suggested Citation

  • Zheng, Yuhuan & Liu, Zhikang & Liu, Bin & Wang, Shan & Xiong, Chuanxi, 2021. "Fabrication of cactus-like CNT/SiO2/MoO3 ternary composites for superior lithium storage," Energy, Elsevier, vol. 217(C).
    • Handle: RePEc:eee:energy:v:217:y:2021:i:c:s0360544220324932
    DOI: 10.1016/j.energy.2020.119386
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    Cited by:

    1. Zhang, Yi-Jie & Gao, Yi-Jun & Wang, Xiaoge & Ye, Qin & Zhang, Ya & Wu, Yu & Chen, Shu-Han & Ruan, Bo & Shi, Dean & Jiang, Tao & Tsai, Fang-Chang & Ma, Ning, 2022. "MoTe2 on metal-organic framework derived MoO2/N-doped carbon rods for enhanced sodium-ion storage properties," Energy, Elsevier, vol. 243(C).

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