Synthesis of graphene nanosheets by the electrolytic exfoliation of graphite and their direct assembly for lithium ion battery anodes

Seung Hun Lee, Seung Deok Seo, Kyung Soo Park, Hyun Woo Shim, Dong Wan Kim

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

Graphene nanosheets were produced through electrolytic exfoliation of graphite foils in an aqueous solution containing an electrolyte, poly(sodium-4-styrenesulfonate). We confirmed the formation of graphene nanosheets by X-ray diffraction, Raman spectroscopy, and high-resolution transmission electron microscopy. The electrochemical performance of the graphene nanosheets was evaluated using cyclic voltammetry, galvanostatic charge-discharge cycling, and electrochemical impedance spectroscopy. In order to address the feasibility of their use as lightweight anodes for a Li ion battery, we also present the direct assembly of graphene nanosheets onto metal current collectors and the fabrication of freestanding graphene nanosheets paper electrodes.

Original languageEnglish
Pages (from-to)309-316
Number of pages8
JournalMaterials Chemistry and Physics
Volume135
Issue number2-3
DOIs
Publication statusPublished - 2012 Aug 15
Externally publishedYes

Keywords

  • Electron microscopy
  • Microstructure
  • Nanostructures

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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