Efficient electrode material of restacked Na-V2O5-graphene nanocomposite for Na-ion batteries

Boyeon Park, Seung Mi Oh, Yun Kyung Jo, Seong Ju Hwang

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Efficient electrode material of Na-V2O5-reduced graphene oxide (rG-O) nanocomposite is synthesized by the restacking of anionic component nanosheets with Na+ ions at room temperature. The restacked Na-V2O5-rG-O nanocomposite shows layer-by-layer-ordered structure of V2O5/rG-O nanosheets and Na+ ions with mesoporous stacking structure and expanded surface area. Upon the restacking with rG-O, the pentavalent V5+ oxidation state and layered lattice of vanadium oxide nanosheet remain unchanged. The composite formation with rG-O leads to a significant enhancement of the discharge capacity from ~50 to ~150 mAh g-1 as cathode material for Na-ion batteries, underscoring the usefulness of restacking between metal oxide and rG-O nanosheets in exploring novel nanocomposite electrode materials.

Original languageEnglish
Pages (from-to)79-82
Number of pages4
JournalMaterials Letters
Volume178
DOIs
Publication statusPublished - 2016 Sep 1

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Nanosheets
electrode materials
Graphene
electric batteries
Nanocomposites
nanocomposites
graphene
Ions
Oxides
Electrodes
ions
vanadium oxides
Vanadium
metal oxides
cathodes
oxidation
Cathodes
composite materials
oxides

All Science Journal Classification (ASJC) codes

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

Cite this

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abstract = "Efficient electrode material of Na-V2O5-reduced graphene oxide (rG-O) nanocomposite is synthesized by the restacking of anionic component nanosheets with Na+ ions at room temperature. The restacked Na-V2O5-rG-O nanocomposite shows layer-by-layer-ordered structure of V2O5/rG-O nanosheets and Na+ ions with mesoporous stacking structure and expanded surface area. Upon the restacking with rG-O, the pentavalent V5+ oxidation state and layered lattice of vanadium oxide nanosheet remain unchanged. The composite formation with rG-O leads to a significant enhancement of the discharge capacity from ~50 to ~150 mAh g-1 as cathode material for Na-ion batteries, underscoring the usefulness of restacking between metal oxide and rG-O nanosheets in exploring novel nanocomposite electrode materials.",
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Efficient electrode material of restacked Na-V2O5-graphene nanocomposite for Na-ion batteries. / Park, Boyeon; Oh, Seung Mi; Jo, Yun Kyung; Hwang, Seong Ju.

In: Materials Letters, Vol. 178, 01.09.2016, p. 79-82.

Research output: Contribution to journalArticle

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