Large reversible Li storage of graphene nanosheet families for use in rechargeable lithium ion batteries

Eun Joo Yoo, Jedeok Kim, Eiji Hosono, Hao Shen Zhou, Tetsuichi Kudo, Itaru Honma

Research output: Contribution to journalArticlepeer-review

2386 Citations (Scopus)

Abstract

The lithium storage properties of graphene nanosheet (GNS) materials as high capacity anode materials for rechargeable lithium secondary batteries (LIB) were investigated. Graphite is a practical anode material used for LIB, because of its capability for reversible lithium ion intercalation in the layered crystals, and the structural similarities of GNS to graphite may provide another type of intercalation anode compound. While the accommodation of lithium in these layered compounds is influenced by the layer spacing between the graphene nanosheets, control of the intergraphene sheet distance through interacting molecules such as carbon nanotubes (CNT) or fullerenes (C60) might be crucial for enhancement of the storage capacity. The specific capacity of GNS was found to be 540 mAh/g, which is much larger than that of graphite, and this was increased up to 730 mAh/g and 784 mAh/g, respectively, by the incorporation of macromolecules of CNT and C60 to the GNS.

Original languageEnglish
Pages (from-to)2277-2282
Number of pages6
JournalNano Letters
Volume8
Issue number8
DOIs
Publication statusPublished - 2008 Aug 1
Externally publishedYes

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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