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Ever-increasing pseudocapacitance in RGO–MnO–RGO sandwich nanostructures for ultrahigh-rate lithium storage

Journal Article


Abstract


  • Lithium ion batteries have attained great success in commercialization owing

    to their high energy density. However, the relatively delaying discharge/

    charge severely hinders their high power applications due to intrinsically diffusion-

    controlled lithium storage of the electrode. This study demonstrates an

    ever-increasing surface redox capacitive lithium storage originating from an

    unique microstructure evolution during cycling in a novel RGO–MnO–RGO

    sandwich nanostructure. Such surface pseudocapacitance is dynamically in

    equilibrium with diffusion-controlled lithium storage, thereby achieving an

    unprecedented rate capability (331.9 mAh g−1 at 40 A g−1, 379 mAh g−1 after

    4000 cycles at 15 A g−1) with outstanding cycle stability. The dynamic combination

    of surface and diffusion lithium storage of electrodes might open up

    possibilities for designing high-power lithium ion batteries.

Authors


  •   Yuan, Tianzhi (external author)
  •   Jiang, Yinzhu (external author)
  •   Sun, Wenping
  •   Xiang, Bo (external author)
  •   Li, Yong (external author)
  •   Yan, Mi (external author)
  •   Xu, Ben (external author)
  •   Dou, Shi Xue

Publication Date


  • 2016

Citation


  • Yuan, T., Jiang, Y., Sun, W., Xiang, B., Li, Y., Yan, M., Xu, B. & Dou, S. (2016). Ever-increasing pseudocapacitance in RGO–MnO–RGO sandwich nanostructures for ultrahigh-rate lithium storage. Advanced Functional Materials, 26 2198-2206.

Scopus Eid


  • 2-s2.0-84976251290

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1782

Has Global Citation Frequency


Number Of Pages


  • 8

Start Page


  • 2198

End Page


  • 2206

Volume


  • 26

Place Of Publication


  • Germany

Abstract


  • Lithium ion batteries have attained great success in commercialization owing

    to their high energy density. However, the relatively delaying discharge/

    charge severely hinders their high power applications due to intrinsically diffusion-

    controlled lithium storage of the electrode. This study demonstrates an

    ever-increasing surface redox capacitive lithium storage originating from an

    unique microstructure evolution during cycling in a novel RGO–MnO–RGO

    sandwich nanostructure. Such surface pseudocapacitance is dynamically in

    equilibrium with diffusion-controlled lithium storage, thereby achieving an

    unprecedented rate capability (331.9 mAh g−1 at 40 A g−1, 379 mAh g−1 after

    4000 cycles at 15 A g−1) with outstanding cycle stability. The dynamic combination

    of surface and diffusion lithium storage of electrodes might open up

    possibilities for designing high-power lithium ion batteries.

Authors


  •   Yuan, Tianzhi (external author)
  •   Jiang, Yinzhu (external author)
  •   Sun, Wenping
  •   Xiang, Bo (external author)
  •   Li, Yong (external author)
  •   Yan, Mi (external author)
  •   Xu, Ben (external author)
  •   Dou, Shi Xue

Publication Date


  • 2016

Citation


  • Yuan, T., Jiang, Y., Sun, W., Xiang, B., Li, Y., Yan, M., Xu, B. & Dou, S. (2016). Ever-increasing pseudocapacitance in RGO–MnO–RGO sandwich nanostructures for ultrahigh-rate lithium storage. Advanced Functional Materials, 26 2198-2206.

Scopus Eid


  • 2-s2.0-84976251290

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1782

Has Global Citation Frequency


Number Of Pages


  • 8

Start Page


  • 2198

End Page


  • 2206

Volume


  • 26

Place Of Publication


  • Germany