journal6 ›› 2010, Vol. 31 ›› Issue (1): 91-95.

• Chemistry and chemical engineering • Previous Articles     Next Articles

Wet Method Preparation and Electrochemical Characterization of Li4Ti5O12/Graphite Anode Material


  1. (1.College of Chemistry and Chemical Engineering,Jishou University,Jishou 416000,Hunan China;2.School of Chemistry and Chemical Engineering,Central South University,Changsha,410083,China)
  • Online:2010-01-25 Published:2012-04-19
  • About author:HE Ze-qiang(1974-),male,was born in Hunan Province,Ph. D.,associate professor.E-mail;Tel:+86 743 8563911.
  • Supported by:

    Supported by National Natural Science Foundation of China (20376086);Postdoctoral Science Foundation of China (2005037700);Hunan Provincial Natural Science Foundation of China (07JJ3014);Scientific Research Fund of Hunan Provincial Education Department(07A058);Postdoctoral Science Foundation of Central South University (2004107)

Abstract: Li4Ti5O12/graphite composite was prepared by sol-gel method using ethyl alcohol as solvent,lithium acetate and tetrabutyl titanate and graphite as raw materials.Li4Ti5O12/graphite composites were characterized by X-ray diffraction(XRD),scanning electron microscopy (SEM) combined with electrochemical tests.Results show that Li4Ti5O12/graphite composite with 5% carbon mass fraction containing can be obtained by annealing the precursor at 600 ℃ for 6 h in Ar atomophere.The composites can deliver a specific capacity of 167.1 mAh/g,99.0% and 105.1% of the capacity can be retained after discharged for 80 times at 0.1 C and 2.0 C,respectively.Compared with pureLi4Ti5O12,Li4Ti5O12 /graphite composite shares larger discharge capacity,better cyclability and rate performance,suggesting Li4Ti5O12/graphite composite is a promising anode material for lithium ion batteries.

Key words: lithium ion batteries, Li4Ti5O12, anode, wet method

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