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Synthesis of nanosheets-assembled lithium titanate hollow microspheres and their application to lithium ion battery anodes

Journal Article


Abstract

  • Hierarchical assembly of hollow microstructures is of great scientificity and practical value. In this paper, a hydrothermal synthesis of Li4Ti5O12 hollow microspheres assembled by nanosheets is introduced. Transmission electron microscopy (TEM) image shows that such Li4Ti5O12 microspheres, with sizes of 2 ��m in diameter, are composed of a hollow inner cavity and thin outer shell assembled by nanosheets. A possible growth mechanism of the structure is further expounded. The Li4Ti5O12 hollow microspheres calcinated at 700��C display extremely good electrochemical performance, including high capacity (147.3 mA h g-1 at 3 C), excellent cyclic stability (95.0% capacity retention after 100 cycles at 3 C) and remarkable rate capability (131.3 mA h g-1 at 20 C).

UOW Authors

  •   Guo, Haipeng (external author)

Publication Date

  • 2015

Citation

  • Zhou, Q., Liu, L., Guo, H., Xu, R., Tan, J., Yan, Z., . . . Wang, X. (2015). Synthesis of nanosheets-assembled lithium titanate hollow microspheres and their application to lithium ion battery anodes. Electrochimica Acta, 151, 502-509. doi:10.1016/j.electacta.2014.11.087

Scopus Eid

  • 2-s2.0-84911486038

Start Page

  • 502

End Page

  • 509

Volume

  • 151

Issue

Place Of Publication

Abstract

  • Hierarchical assembly of hollow microstructures is of great scientificity and practical value. In this paper, a hydrothermal synthesis of Li4Ti5O12 hollow microspheres assembled by nanosheets is introduced. Transmission electron microscopy (TEM) image shows that such Li4Ti5O12 microspheres, with sizes of 2 ��m in diameter, are composed of a hollow inner cavity and thin outer shell assembled by nanosheets. A possible growth mechanism of the structure is further expounded. The Li4Ti5O12 hollow microspheres calcinated at 700��C display extremely good electrochemical performance, including high capacity (147.3 mA h g-1 at 3 C), excellent cyclic stability (95.0% capacity retention after 100 cycles at 3 C) and remarkable rate capability (131.3 mA h g-1 at 20 C).

UOW Authors

  •   Guo, Haipeng (external author)

Publication Date

  • 2015

Citation

  • Zhou, Q., Liu, L., Guo, H., Xu, R., Tan, J., Yan, Z., . . . Wang, X. (2015). Synthesis of nanosheets-assembled lithium titanate hollow microspheres and their application to lithium ion battery anodes. Electrochimica Acta, 151, 502-509. doi:10.1016/j.electacta.2014.11.087

Scopus Eid

  • 2-s2.0-84911486038

Start Page

  • 502

End Page

  • 509

Volume

  • 151

Issue

Place Of Publication