Onion-like carbon coated CuO nanocapsules: A highly reversible anode material for lithium ion batteries

Xianguo Liu, Nannan Bi, Chao Feng, Siu Wing Or, Yuping Sun, Chuangui Jin, Weihuo Li, Feng Xiao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

35 Citations (Scopus)

Abstract

The synthesis and characterization of CuO/C nanocapsules for application as anode material in lithium ion batteries are reported. Introduction of onion-like carbon shell on the CuO nanoparticles leads to the improved stability, electric conductivity and electrochemical performance. When evaluated as potential anode materials for lithium-ion batteries, the novel CuO/C nanocapsules deliver an initial discharge capacity of 1043.9 mA h g-1at 100 mA g-1and maintain a high reversible capacity of 628.7 mA h g-1after 50 charge-discharge cycles, much higher than those of the CuO nanoparticles. A postmortem analysis of the CuO and CuO/C anodes subjected to prolonged cycling reveals the existence of a lower degree of surface cracking and particle breakage in the CuO/C anode than the CuO anode.
Original languageEnglish
Pages (from-to)1-5
Number of pages5
JournalJournal of Alloys and Compounds
Volume587
DOIs
Publication statusPublished - 1 Jan 2014

Keywords

  • Anode electrode
  • Carbon layer
  • Copper oxide
  • Lithium ion batteries

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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