Three-dimensional hierarchical Co3O4/CuO nanowire heterostructure arrays on nickel foam for high-performance lithium ion batteries

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Jiexi Wang
  • Qiaobao Zhang
  • Xinhai Li
  • Daguo Xu
  • Zhixing Wang
  • Huajun Guo

Detail(s)

Original languageEnglish
Pages (from-to)19-26
Journal / PublicationNano Energy
Volume6
Online published13 Mar 2014
Publication statusPublished - May 2014

Abstract

Novel three-dimensional (3D) hierarchical Co3O4/CuO nanowire (NW) arrays on nickel foam composed of CuO NW stems and Co3O4 nanosheet branches are synthesized by combining a facile, scalable, and cost-effective thermal oxidation method with a simple but powerful chemical bath deposition followed by a calcination process. These arrays are further investigated as binder- and conductive-agent-free anodes for lithium-ion batteries (LIBs). The smart hybridization of CuO NWs and Co3O4 nanosheets into hierarchical core/shell array configuration results in remarkably enhanced electrochemical performances with good cycle performance, high reversible capacity, and excellent rate capability compared with pure CuO NW and single net-like Co3O4 nanosheets. A high reversible capacity of 1191mAhg-1 with 90.9% capacity retention after 200 cycles at a current density of 200mAg-1, and reversible capacity up to 810mAhg-1 even after 500 cycles at a current density as high as 1000mAg-1 can be maintained. The superior electrochemical performances of electrodes composed of hierarchical Co3O4/CuO NW arrays connected directly on nickel foam make them potential anode materials for high-performance LIBs. © 2014 Elsevier Ltd.

Research Area(s)

  • Anode, Cobalt oxide, Copper oxide, Heterostructure array, Lithium-ion battery

Citation Format(s)