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3D hierarchical porous α-Fe2O3 nanosheets for high-performance lithium-ion batteries

Journal Article


Abstract


  • To develop a long cycle life and good rate capability electrode, 3D hierarchical

    porous α-Fe2O3 nanosheets are fabricated on copper foil and directly used

    as binder-free anode for lithium-ion batteries. This electrode exhibits a high

    reversible capacity and excellent rate capability. A reversible capacity up to

    877.7 mAh g −1 is maintained at 2 C (2.01 A g −1 ) after 1000 cycles, and even

    when the current is increased to 20 C (20.1 A g −1 ), a capacity of 433 mA h g −1

    is retained. The unique porous 3D hierarchical nanostructure improves electronic–

    ionic transport, mitigates the internal mechanical stress induced by

    the volume variations of the electrode upon cycling, and forms a 3D conductive

    network during cycling. No addition of any electrochemically inactive

    conductive agents or polymer binders is required. Therefore, binder-free electrodes

    further avoid the uneven distribution of conductive carbon on the current

    collector due to physical mixing and the addition of an insulator (binder),

    which has benefi ts leading to outstanding electrochemical performance.

Authors


  •   Cao, Kangzhe (external author)
  •   Jiao, Lifang (external author)
  •   Liu, Huiqiao (external author)
  •   Liu, Yongchang (external author)
  •   Wang, Yijing (external author)
  •   Guo, Zaiping
  •   Yuan, Huatang (external author)

Publication Date


  • 2015

Citation


  • Cao, K., Jiao, L., Liu, H., Liu, Y., Wang, Y., Guo, Z. & Yuan, H. (2015). 3D hierarchical porous α-Fe2O3 nanosheets for high-performance lithium-ion batteries. Advanced Energy Materials, 5 (4), 1401421-1-1401421-9.

Scopus Eid


  • 2-s2.0-84923336506

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3969

Has Global Citation Frequency


Start Page


  • 1401421-1

End Page


  • 1401421-9

Volume


  • 5

Issue


  • 4

Place Of Publication


  • Germany

Abstract


  • To develop a long cycle life and good rate capability electrode, 3D hierarchical

    porous α-Fe2O3 nanosheets are fabricated on copper foil and directly used

    as binder-free anode for lithium-ion batteries. This electrode exhibits a high

    reversible capacity and excellent rate capability. A reversible capacity up to

    877.7 mAh g −1 is maintained at 2 C (2.01 A g −1 ) after 1000 cycles, and even

    when the current is increased to 20 C (20.1 A g −1 ), a capacity of 433 mA h g −1

    is retained. The unique porous 3D hierarchical nanostructure improves electronic–

    ionic transport, mitigates the internal mechanical stress induced by

    the volume variations of the electrode upon cycling, and forms a 3D conductive

    network during cycling. No addition of any electrochemically inactive

    conductive agents or polymer binders is required. Therefore, binder-free electrodes

    further avoid the uneven distribution of conductive carbon on the current

    collector due to physical mixing and the addition of an insulator (binder),

    which has benefi ts leading to outstanding electrochemical performance.

Authors


  •   Cao, Kangzhe (external author)
  •   Jiao, Lifang (external author)
  •   Liu, Huiqiao (external author)
  •   Liu, Yongchang (external author)
  •   Wang, Yijing (external author)
  •   Guo, Zaiping
  •   Yuan, Huatang (external author)

Publication Date


  • 2015

Citation


  • Cao, K., Jiao, L., Liu, H., Liu, Y., Wang, Y., Guo, Z. & Yuan, H. (2015). 3D hierarchical porous α-Fe2O3 nanosheets for high-performance lithium-ion batteries. Advanced Energy Materials, 5 (4), 1401421-1-1401421-9.

Scopus Eid


  • 2-s2.0-84923336506

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3969

Has Global Citation Frequency


Start Page


  • 1401421-1

End Page


  • 1401421-9

Volume


  • 5

Issue


  • 4

Place Of Publication


  • Germany