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Reversible structural evolution of sodium-rich rhombohedral Prussian blue for sodium-ion batteries

Journal Article


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Abstract


  • © 2020, The Author(s). Iron-based Prussian blue analogs are promising low-cost and easily prepared cathode materials for sodium-ion batteries. Their materials quality and electrochemical performance are heavily reliant on the precipitation process. Here we report a controllable precipitation method to synthesize high-performance Prussian blue for sodium-ion storage. Characterization of the nucleation and evolution processes of the highly crystalline Prussian blue microcubes reveals a rhombohedral structure that exhibits high initial Coulombic efficiency, excellent rate performance, and cycling properties. The phase transitions in the as-obtained material are investigated by synchrotron in situ powder X-ray diffraction, which shows highly reversible structural transformations between rhombohedral, cubic, and tetragonal structures upon sodium-ion (de)intercalations. Moreover, the Prussian blue material from a large-scale synthesis process shows stable cycling performance in a pouch full cell over 1000 times. We believe that this work could pave the way for the real application of Prussian blue materials in sodium-ion batteries.

Authors


  •   Wang, Wanlin (external author)
  •   Gang, Yong (external author)
  •   Hu, Zhe (external author)
  •   Yan, Zichao (external author)
  •   Li, Weijie
  •   Li, Yongcheng (external author)
  •   Gu, Qinfen (external author)
  •   Wang, Zhixing (external author)
  •   Chou, Shulei
  •   Liu, Hua K.
  •   Dou, Shi Xue

Publication Date


  • 2020

Citation


  • Wang, W., Gang, Y., Hu, Z., Yan, Z., Li, W., Li, Y., Gu, Q., Wang, Z., Chou, S., Liu, H. & Dou, S. (2020). Reversible structural evolution of sodium-rich rhombohedral Prussian blue for sodium-ion batteries. Nature Communications, 11 (1),

Scopus Eid


  • 2-s2.0-85079821243

Ro Full-text Url


  • https://ro.uow.edu.au/cgi/viewcontent.cgi?article=5100&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/4045

Has Global Citation Frequency


Volume


  • 11

Issue


  • 1

Place Of Publication


  • United Kingdom

Abstract


  • © 2020, The Author(s). Iron-based Prussian blue analogs are promising low-cost and easily prepared cathode materials for sodium-ion batteries. Their materials quality and electrochemical performance are heavily reliant on the precipitation process. Here we report a controllable precipitation method to synthesize high-performance Prussian blue for sodium-ion storage. Characterization of the nucleation and evolution processes of the highly crystalline Prussian blue microcubes reveals a rhombohedral structure that exhibits high initial Coulombic efficiency, excellent rate performance, and cycling properties. The phase transitions in the as-obtained material are investigated by synchrotron in situ powder X-ray diffraction, which shows highly reversible structural transformations between rhombohedral, cubic, and tetragonal structures upon sodium-ion (de)intercalations. Moreover, the Prussian blue material from a large-scale synthesis process shows stable cycling performance in a pouch full cell over 1000 times. We believe that this work could pave the way for the real application of Prussian blue materials in sodium-ion batteries.

Authors


  •   Wang, Wanlin (external author)
  •   Gang, Yong (external author)
  •   Hu, Zhe (external author)
  •   Yan, Zichao (external author)
  •   Li, Weijie
  •   Li, Yongcheng (external author)
  •   Gu, Qinfen (external author)
  •   Wang, Zhixing (external author)
  •   Chou, Shulei
  •   Liu, Hua K.
  •   Dou, Shi Xue

Publication Date


  • 2020

Citation


  • Wang, W., Gang, Y., Hu, Z., Yan, Z., Li, W., Li, Y., Gu, Q., Wang, Z., Chou, S., Liu, H. & Dou, S. (2020). Reversible structural evolution of sodium-rich rhombohedral Prussian blue for sodium-ion batteries. Nature Communications, 11 (1),

Scopus Eid


  • 2-s2.0-85079821243

Ro Full-text Url


  • https://ro.uow.edu.au/cgi/viewcontent.cgi?article=5100&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/4045

Has Global Citation Frequency


Volume


  • 11

Issue


  • 1

Place Of Publication


  • United Kingdom