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Li2TiSiO5: a low potential and large capacity Ti-based anode material for Li-ion batteries

Journal Article


Abstract


  • To date, anode materials for lithium-ion batteries (LIBs) have been dominated by carbonaceous materials,

    which have a low intercalation potential but easily allow lithium dendrites to form under high current

    density, leading to a safety risk. The other anode material, the ‘‘zero-strain’’ spinel-structured Li4Ti5O12,

    with a B1.5 V vs. Li+/Li intercalation potential, exhibits excellent cycling stability and avoids the issues of

    dendrite growth and Li plating. The low capacity and high voltage of Li4Ti5O12, however, result in low

    energy density. Herein, we report a new and environmentally friendly anode material, Li2TiSiO5, which

    delivers a capacity as high as 308 mA h g1

    , with a working potential of 0.28 V vs. Li+/Li, and excellent

    cycling stability. The lithium-storage mechanism of this material is also proposed based on the

    combination of in situ synchrotron X-ray diffraction, neutron powder diffraction with Fourier density

    mapping, ex situ X-ray absorption near edge structure analysis, ex situ transmission electron microscopy,

    and density-functional theory calculations with the projector-augmented-wave formalism. The lithiumstorage

    mechanism of this material is shown to involve a two-electron (Ti4+/Ti2+ redox) conversion

    reaction between TiO and Li4SiO4.

Authors


  •   Liu, Jingyuan (external author)
  •   Pang, Wei Kong.
  •   Zhou, Tong (external author)
  •   Chen, Long (external author)
  •   Wang, Yonggan (external author)
  •   Peterson, Vanessa K. (external author)
  •   Yang, Zhongqin (external author)
  •   Guo, Zaiping
  •   Xia, Yongyao (external author)

Publication Date


  • 2017

Citation


  • Liu, J., Pang, W., Zhou, T., Chen, L., Wang, Y., Peterson, V. K., Yang, Z., Guo, Z. & Xia, Y. (2017). Li2TiSiO5: a low potential and large capacity Ti-based anode material for Li-ion batteries. Energy and Environmental Science, 10 (6), 1456-1464.

Scopus Eid


  • 2-s2.0-85021939018

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2576

Has Global Citation Frequency


Number Of Pages


  • 8

Start Page


  • 1456

End Page


  • 1464

Volume


  • 10

Issue


  • 6

Place Of Publication


  • United Kingdom

Abstract


  • To date, anode materials for lithium-ion batteries (LIBs) have been dominated by carbonaceous materials,

    which have a low intercalation potential but easily allow lithium dendrites to form under high current

    density, leading to a safety risk. The other anode material, the ‘‘zero-strain’’ spinel-structured Li4Ti5O12,

    with a B1.5 V vs. Li+/Li intercalation potential, exhibits excellent cycling stability and avoids the issues of

    dendrite growth and Li plating. The low capacity and high voltage of Li4Ti5O12, however, result in low

    energy density. Herein, we report a new and environmentally friendly anode material, Li2TiSiO5, which

    delivers a capacity as high as 308 mA h g1

    , with a working potential of 0.28 V vs. Li+/Li, and excellent

    cycling stability. The lithium-storage mechanism of this material is also proposed based on the

    combination of in situ synchrotron X-ray diffraction, neutron powder diffraction with Fourier density

    mapping, ex situ X-ray absorption near edge structure analysis, ex situ transmission electron microscopy,

    and density-functional theory calculations with the projector-augmented-wave formalism. The lithiumstorage

    mechanism of this material is shown to involve a two-electron (Ti4+/Ti2+ redox) conversion

    reaction between TiO and Li4SiO4.

Authors


  •   Liu, Jingyuan (external author)
  •   Pang, Wei Kong.
  •   Zhou, Tong (external author)
  •   Chen, Long (external author)
  •   Wang, Yonggan (external author)
  •   Peterson, Vanessa K. (external author)
  •   Yang, Zhongqin (external author)
  •   Guo, Zaiping
  •   Xia, Yongyao (external author)

Publication Date


  • 2017

Citation


  • Liu, J., Pang, W., Zhou, T., Chen, L., Wang, Y., Peterson, V. K., Yang, Z., Guo, Z. & Xia, Y. (2017). Li2TiSiO5: a low potential and large capacity Ti-based anode material for Li-ion batteries. Energy and Environmental Science, 10 (6), 1456-1464.

Scopus Eid


  • 2-s2.0-85021939018

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2576

Has Global Citation Frequency


Number Of Pages


  • 8

Start Page


  • 1456

End Page


  • 1464

Volume


  • 10

Issue


  • 6

Place Of Publication


  • United Kingdom