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EASY SYNTHESIS OFLi4Ti5O12/CMICROSPHERES CONTAINING NANOPARTICLES AS ANODE MATERIAL FOR HIGH-RATELi-ION BATTERIES

Author

Listed:
  • XIAODONG ZHENG

    (Clean Energy Research and Development Center, Department of Chemistry and Chemical Engineering, Binzhou University, Binzhou 256603, P. R. China)

  • LINA DONG

    (Clean Energy Research and Development Center, Department of Chemistry and Chemical Engineering, Binzhou University, Binzhou 256603, P. R. China)

  • CHENCHU DONG

    (Clean Energy Research and Development Center, Department of Chemistry and Chemical Engineering, Binzhou University, Binzhou 256603, P. R. China)

Abstract

A microsphericalLi4Ti5O12/Ccomposite composed of interconnected nanoparticles with BP-2000 carbon black as carbon source is synthesized for use as an anode material in high-power lithium-ion batteries. The composite is prepared through precursor pretreatment including pre-sintering, ball-milling, and spray-drying. The structure, size and surface morphology of the as-prepared particles are investigated by X-ray diffraction and scanning electron microscopy. Results show that the obtained material has a microspherical morphology consisting of nanosized prime particles with compact structure. The precursor pretreatment effectively reduced the agglomeration of the prime particles caused by high temperature sintering and led to a more uniform distribution of BP-2000 on the surface of prime particles generating highly efficient conductive network. The specific capacity of the electrode at 20 C rate is 131 mAh g-1and the loss of capacity is less than 2% after the 60 variation cycles (from 1 C to 20 C and back to 1 C). This excellent performance is attributed to the effective conductive network between the prime particles and the reduction of the lithium-ion diffusion pathway.

Suggested Citation

  • Xiaodong Zheng & Lina Dong & Chenchu Dong, 2014. "EASY SYNTHESIS OFLi4Ti5O12/CMICROSPHERES CONTAINING NANOPARTICLES AS ANODE MATERIAL FOR HIGH-RATELi-ION BATTERIES," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 21(02), pages 1-9.
    • Handle: RePEc:wsi:srlxxx:v:21:y:2014:i:02:n:s0218625x14500231
    DOI: 10.1142/S0218625X14500231
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    Keywords

    Lithium-ion battery; anode; Li4Ti5O12/Ccomposite; high-rate;
    All these keywords.

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