Enhanced Li- and Na-storage in Sb-Graphene nanocomposite anodes

Yeongjae Yi, Hyun Woo Shim, Seung Deok Seo, Mushtaq Ahmad Dar, Dong-Wan Kim

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Antimony-graphene nanocomposite (Sb-GNP) was prepared from commercially available graphene nanoplatelets (GNPs) by a simple wet-chemical route at room temperature, and systematically investigated as an anode material for both lithium- and sodium-ion batteries (LIBs and NIBs). The microstructural features of Sb-GNP, and of pure Sb nanoparticles prepared without addition of GNPs, were characterized using X-ray diffraction, field-emission scanning electron microscopy, and high-resolution transmission electron microscopy. The successful formation of a nanocomposite structure was observed for Sb-GNP; the Sb nanoparticles are well dispersed and anchored on graphene nanoplatelets without significant aggregation of Sb nanoparticles, in contrast to the pure Sb nanoparticles. Furthermore, galvanostatic studies revealed that Sb-GNP displays better Li- and Na-storage performance than the pure Sb nanoparticles when utilized as an anode material. The enhanced electrochemical performance can be attributed to the effects of nanocomposite formation with GNPs.

Original languageEnglish
Pages (from-to)338-343
Number of pages6
JournalMaterials Research Bulletin
Volume76
DOIs
Publication statusPublished - 2016 Apr 1

Keywords

  • A. Composites
  • A. Nanostructure
  • B. Chemical synthesis
  • C. Electrochemical measurements
  • D. Energy storage

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

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