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Keywords:

  • graphene nanosheets;
  • intercalations;
  • exfoliation;
  • high-quality;
  • ultracapacitor
Thumbnail image of graphical abstract

Facile exfoliation of graphite: High-quality graphene sheets are produced directly from graphite by a facile chemical approach. The new strategy for non-oxidized chemical exfoliation of graphite is based on a pre-intercalated process with oleum and a further strong reaction with sodium in the graphite layers under grinding conditions. This method is facile, low cost, and high throughput.