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Synthesis of hierarchical mesoporous lithium nickel cobalt manganese oxide spheres with high rate capability for lithium-ion batteries

Journal Article


Abstract


  • Hierarchical mesoporous LiNi 1/3 Co 1/3 Mn 1/3 O 2 spheres have been synthesized by urea-assisted solvothermal method with adding Triton X-100. The structure and morphology of the as-prepared materials were analyzed by X-ray diffraction and electron microscope. The results show that the as-prepared samples can be indexed as hexagonal layered structure with hierarchical architecture, and the possible formation mechanism is speculated. When evaluated as cathode material, the hierarchical mesoporous LiNi 1/3 Co 1/3 Mn 1/3 O 2 spheres show good electrochemical properties with high initial discharge capacity of 129.9 mAh g −1 , and remain the discharge capacity of 95.5 mAh g −1 after 160 cycles at 10C. The excellent electrochemical performance of the as-prepared sample can be attributed to its stable hierarchical mesoporous framework in conjunction with large specific surface, low cation mixing and small particle size. They not only provide a large number of reaction sites for surface or interface reaction, but also shorten the diffusion length of Li + ions. Meanwhile, the mesoporous spheres composed of nanoparticles can contribute to high rate ability and buffer volume changes during charge/discharge process.

Authors


  •   Tong, Wei (external author)
  •   Haung, Yudai (external author)
  •   Cai, Yanjun (external author)
  •   Guo, Yong (external author)
  •   Wang, Xingchao (external author)
  •   Jia, Dianzeng (external author)
  •   Sun, Zhipeng (external author)
  •   Pang, Wei Kong.
  •   Guo, Zaiping
  •   Zong, Jun (external author)

Publication Date


  • 2018

Citation


  • Tong, W., Huang, Y., Cai, Y., Guo, Y., Wang, X., Jia, D., Sun, Z., Pang, W., Guo, Z. & Zong, J. (2018). Synthesis of hierarchical mesoporous lithium nickel cobalt manganese oxide spheres with high rate capability for lithium-ion batteries. Applied Surface Science, 428 1036-1045.

Scopus Eid


  • 2-s2.0-85030768289

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2782

Number Of Pages


  • 9

Start Page


  • 1036

End Page


  • 1045

Volume


  • 428

Place Of Publication


  • Netherlands

Abstract


  • Hierarchical mesoporous LiNi 1/3 Co 1/3 Mn 1/3 O 2 spheres have been synthesized by urea-assisted solvothermal method with adding Triton X-100. The structure and morphology of the as-prepared materials were analyzed by X-ray diffraction and electron microscope. The results show that the as-prepared samples can be indexed as hexagonal layered structure with hierarchical architecture, and the possible formation mechanism is speculated. When evaluated as cathode material, the hierarchical mesoporous LiNi 1/3 Co 1/3 Mn 1/3 O 2 spheres show good electrochemical properties with high initial discharge capacity of 129.9 mAh g −1 , and remain the discharge capacity of 95.5 mAh g −1 after 160 cycles at 10C. The excellent electrochemical performance of the as-prepared sample can be attributed to its stable hierarchical mesoporous framework in conjunction with large specific surface, low cation mixing and small particle size. They not only provide a large number of reaction sites for surface or interface reaction, but also shorten the diffusion length of Li + ions. Meanwhile, the mesoporous spheres composed of nanoparticles can contribute to high rate ability and buffer volume changes during charge/discharge process.

Authors


  •   Tong, Wei (external author)
  •   Haung, Yudai (external author)
  •   Cai, Yanjun (external author)
  •   Guo, Yong (external author)
  •   Wang, Xingchao (external author)
  •   Jia, Dianzeng (external author)
  •   Sun, Zhipeng (external author)
  •   Pang, Wei Kong.
  •   Guo, Zaiping
  •   Zong, Jun (external author)

Publication Date


  • 2018

Citation


  • Tong, W., Huang, Y., Cai, Y., Guo, Y., Wang, X., Jia, D., Sun, Z., Pang, W., Guo, Z. & Zong, J. (2018). Synthesis of hierarchical mesoporous lithium nickel cobalt manganese oxide spheres with high rate capability for lithium-ion batteries. Applied Surface Science, 428 1036-1045.

Scopus Eid


  • 2-s2.0-85030768289

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2782

Number Of Pages


  • 9

Start Page


  • 1036

End Page


  • 1045

Volume


  • 428

Place Of Publication


  • Netherlands