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Article Dans Une Revue Nanomaterials Année : 2022

Graphite-Mediated Microwave-Exfoliated Graphene Fluoride as Supercapacitor Electrodes

Nicoloò Canever
Xianjue Chen
  • Fonction : Auteur
Mark Wojcik
  • Fonction : Auteur
Hui Zhang
  • Fonction : Auteur
Xinchen Dai
Marc Dubois
Thomas Nann

Résumé

A graphite-mediated microwave-based strategy was used for solid-state exfoliation of graphite fluoride in a few seconds, followed by a simple yet efficient separation to obtain exfoliated materials based on the density difference between graphite and graphene fluoride in solvent. The microwave-exfoliated graphene fluoride was a few layers thick and electrically conductive. The electrochemical testing of pouch-cell supercapacitors assembled by using the exfoliated graphene fluoride electrodes and a novel microemulsion-based electrolyte showed reasonable performance with typical electrical double-layer capacitance behavior and good rate capability (gravimetric specific capacitance: 3.2 F g−1 at 500 mA g−1 and 3.1 F g−1 at 5000 mA g−1). The BET specific surface areas of the as-exfoliated graphene fluoride are ~60–80 m2 g−1, which could be increased by activation using this simple yet versatile microwave-based method for further improvements on the electrochemical performance.

Domaines

Chimie

Dates et versions

hal-03805312 , version 1 (07-10-2022)

Identifiants

Citer

Nicoloò Canever, Xianjue Chen, Mark Wojcik, Hui Zhang, Xinchen Dai, et al.. Graphite-Mediated Microwave-Exfoliated Graphene Fluoride as Supercapacitor Electrodes. Nanomaterials, 2022, 12 (11), pp.1796. ⟨10.3390/nano12111796⟩. ⟨hal-03805312⟩
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