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Growth of lithium lanthanum titanate nanosheets and their application in lithium-ion batteries

Journal Article


Abstract


  • In this work, lithium-doped lanthanum titanate (LLTO) nanosheets have been prepared by a facile hydrothermal approach. It is found that with the incorporation of lithium ions, the morphology of the product transfers from rectangular nanosheets to irregular nanosheets along with a transition from La2Ti2O7 to Li0.5La0.5TiO3. The as-prepared LLTO nanosheets are used to enhance electrochemical performance of the LiCo1/3Ni1/3Mn1/3O2 (CNM) electrode by forming a higher lithium-ion conductive network. The LiCo1/3Ni1/3Mn1/3O2-Li0.5La0.5TiO3 (CNM-LLTO) electrode shows better a lithium diffusion coefficient of 1.5 × 10-15 cm2 s-1, resulting from higher lithium-ion conductivity of LLTO and shorter lithium diffusion path, compared with the lithium diffusion coefficient of CNM electrode (5.44 × 10-16 cm2 s-1). Superior reversibility and stability are also found in the CNM-LLTO electrode, which retains a capacity at 198 mAh/g after 100 cycles at a rate of 0.1 C. Therefore, it can be confirmed that the existence of LLTO nanosheets can act as bridges to facilitate the lithium-ion diffusion between the active materials and electrolytes.

Authors


  •   Lin, Xi (external author)
  •   Wang, Hongqiang (external author)
  •   Du, Haiwei (external author)
  •   Xiong, Xinrun (external author)
  •   Qu, Bo (external author)
  •   Guo, Zaiping
  •   Chu, Dewei (external author)

Publication Date


  • 2016

Citation


  • Lin, X., Wang, H., Du, H., Xiong, X., Qu, B., Guo, Z. & Chu, D. (2016). Growth of lithium lanthanum titanate nanosheets and their application in lithium-ion batteries. ACS Applied Materials and Interfaces, 8 (2), 1486-1492.

Scopus Eid


  • 2-s2.0-84955472486

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2123

Has Global Citation Frequency


Number Of Pages


  • 6

Start Page


  • 1486

End Page


  • 1492

Volume


  • 8

Issue


  • 2

Place Of Publication


  • United States

Abstract


  • In this work, lithium-doped lanthanum titanate (LLTO) nanosheets have been prepared by a facile hydrothermal approach. It is found that with the incorporation of lithium ions, the morphology of the product transfers from rectangular nanosheets to irregular nanosheets along with a transition from La2Ti2O7 to Li0.5La0.5TiO3. The as-prepared LLTO nanosheets are used to enhance electrochemical performance of the LiCo1/3Ni1/3Mn1/3O2 (CNM) electrode by forming a higher lithium-ion conductive network. The LiCo1/3Ni1/3Mn1/3O2-Li0.5La0.5TiO3 (CNM-LLTO) electrode shows better a lithium diffusion coefficient of 1.5 × 10-15 cm2 s-1, resulting from higher lithium-ion conductivity of LLTO and shorter lithium diffusion path, compared with the lithium diffusion coefficient of CNM electrode (5.44 × 10-16 cm2 s-1). Superior reversibility and stability are also found in the CNM-LLTO electrode, which retains a capacity at 198 mAh/g after 100 cycles at a rate of 0.1 C. Therefore, it can be confirmed that the existence of LLTO nanosheets can act as bridges to facilitate the lithium-ion diffusion between the active materials and electrolytes.

Authors


  •   Lin, Xi (external author)
  •   Wang, Hongqiang (external author)
  •   Du, Haiwei (external author)
  •   Xiong, Xinrun (external author)
  •   Qu, Bo (external author)
  •   Guo, Zaiping
  •   Chu, Dewei (external author)

Publication Date


  • 2016

Citation


  • Lin, X., Wang, H., Du, H., Xiong, X., Qu, B., Guo, Z. & Chu, D. (2016). Growth of lithium lanthanum titanate nanosheets and their application in lithium-ion batteries. ACS Applied Materials and Interfaces, 8 (2), 1486-1492.

Scopus Eid


  • 2-s2.0-84955472486

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2123

Has Global Citation Frequency


Number Of Pages


  • 6

Start Page


  • 1486

End Page


  • 1492

Volume


  • 8

Issue


  • 2

Place Of Publication


  • United States