Controlling morphology and enhancing electrochemical performance of cobalt oxide by addition of graphite

Ling Fei, Qianglu Lin, Bin Yuan, Maitham Naeemi, Yun Xu, Yuling Li, Shuguang Deng, Hongmei Luo

Research output: Contribution to journalArticle

13 Scopus citations

Abstract

Co3O4 nanowire, nanoparticle network, and Co 3O4/graphite nanocomposite were synthesized via a hydrothermal route accompanied with a post-annealing step. The Co 3O4 nanowire was formed without adding graphite; after introducing graphite, the morphology of the Co3O4 nanocomposite changed to a network through the partial overlapping of nanoparticles. The electrochemical properties of the samples were studied as anode materials in lithium-ion batteries. The Co3O 4/graphite nanocomposite outperforms two different pure Co 3O4 samples by showing superior Li-battery performance with dramatically enhanced cyclic performance at a current density of 500 mA/g and excellent rate performance. Its reversible capacity remains as high as 551 mA h/g after 50th cycle.

Original languageEnglish (US)
Pages (from-to)59-62
Number of pages4
JournalMaterials Letters
Volume98
DOIs
StatePublished - Mar 15 2013

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Keywords

  • Cobalt oxide
  • Energy storage
  • Graphite
  • Nanocomposites

ASJC Scopus subject areas

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

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