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Issue 36, 2019
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Unlocking high capacities of graphite anodes for potassium-ion batteries

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Abstract

Graphite is considered a promising candidate as the anode for potassium-ion batteries (KIBs). Here, we demonstrate a significant improvement in performance through the ball-milling of graphite. Electrochemical techniques show reversible K-intercalation into graphitic layers, with 65% capacity retention after 100 cycles from initial capacities and extended cycling beyond 200 cycles. Such an affinity of the graphite towards storage of K-ions is explained by means of SEM and Raman analyses. Graphite ball-milling results in a gentle mechanical exfoliation of the graphene layers and simultaneous defect formation, leading to enhanced electrochemical performance.

Graphical abstract: Unlocking high capacities of graphite anodes for potassium-ion batteries

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Publication details

The article was received on 13 Mar 2019, accepted on 28 Jun 2019 and first published on 05 Jul 2019


Article type: Paper
DOI: 10.1039/C9RA01931F
RSC Adv., 2019,9, 21070-21074
  • Open access: Creative Commons BY license
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    Unlocking high capacities of graphite anodes for potassium-ion batteries

    M. Carboni, A. J. Naylor, M. Valvo and R. Younesi, RSC Adv., 2019, 9, 21070
    DOI: 10.1039/C9RA01931F

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