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Activated carbon from the graphite with increased rate capability for the potassium ion battery

Journal Article


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Abstract


  • Activated carbon has been synthesized by a high-temperature annealing route using graphite as carbon source and potassium hydroxide as the etching agent. Many nanosized carbon sheets formed on the particles could be of benefit for rapid intercalation/de-intercalation of potassium ions. Moreover, the d-spacing in the (100) crystal planes of the as-prepared active carbon is enlarged to 0.335 nm, even some formed carbon nanosheets can reach 0.358 nm, and the diffusion coefficient of K ion is also improved by 7 times as well. The as-prepared activated carbon electrode can deliver a high reversible capacity of 100 mAh g ¿1 after 100 cycles (at a high current density of 0.2 A g ¿1 ), and exhibits increased rate performance. The results demonstrate that the as-prepared active carbon is a promising anode material for the potassium ion battery, with high capacity, excellent rate performance, and great cycling stability.

Authors


  •   Tai, Zhixin (external author)
  •   Zhang, Qing (external author)
  •   Liu, Yajie (external author)
  •   Liu, Hua K.
  •   Dou, Shi Xue

Publication Date


  • 2017

Published In


Citation


  • Tai, Z., Zhang, Q., Liu, Y., Liu, H. & Dou, S. (2017). Activated carbon from the graphite with increased rate capability for the potassium ion battery. Carbon, 123 54-61.

Scopus Eid


  • 2-s2.0-85024131703

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=3708&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2660

Has Global Citation Frequency


Number Of Pages


  • 7

Start Page


  • 54

End Page


  • 61

Volume


  • 123

Place Of Publication


  • United Kingdom

Abstract


  • Activated carbon has been synthesized by a high-temperature annealing route using graphite as carbon source and potassium hydroxide as the etching agent. Many nanosized carbon sheets formed on the particles could be of benefit for rapid intercalation/de-intercalation of potassium ions. Moreover, the d-spacing in the (100) crystal planes of the as-prepared active carbon is enlarged to 0.335 nm, even some formed carbon nanosheets can reach 0.358 nm, and the diffusion coefficient of K ion is also improved by 7 times as well. The as-prepared activated carbon electrode can deliver a high reversible capacity of 100 mAh g ¿1 after 100 cycles (at a high current density of 0.2 A g ¿1 ), and exhibits increased rate performance. The results demonstrate that the as-prepared active carbon is a promising anode material for the potassium ion battery, with high capacity, excellent rate performance, and great cycling stability.

Authors


  •   Tai, Zhixin (external author)
  •   Zhang, Qing (external author)
  •   Liu, Yajie (external author)
  •   Liu, Hua K.
  •   Dou, Shi Xue

Publication Date


  • 2017

Published In


Citation


  • Tai, Z., Zhang, Q., Liu, Y., Liu, H. & Dou, S. (2017). Activated carbon from the graphite with increased rate capability for the potassium ion battery. Carbon, 123 54-61.

Scopus Eid


  • 2-s2.0-85024131703

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=3708&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2660

Has Global Citation Frequency


Number Of Pages


  • 7

Start Page


  • 54

End Page


  • 61

Volume


  • 123

Place Of Publication


  • United Kingdom