Improved lithium ion battery performance by mesoporous Co3O 4 nanosheets grown on self-standing NiSix nanowires on nickel foam

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

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Author(s)

  • Huixin Chen
  • Qiaobao Zhang
  • Jiexi Wang
  • Daguo Xu
  • Xinhai Li
  • Yong Yang

Detail(s)

Original languageEnglish
Pages (from-to)8483-8490
Journal / PublicationJournal of Materials Chemistry A
Volume2
Issue number22
Online published25 Mar 2014
Publication statusPublished - 14 Jun 2014

Abstract

Novel three-dimensional (3D) hierarchical NiSix/Co 3O4 core-shell nanowire arrays composed of NiSi x nanowire cores and branched Co3O4 nanosheet shells have been successfully synthesized by combining chemical vapor deposition and a simple but effective chemical bath deposition process followed by a calcination process. The resulting hierarchical NiSix/Co 3O4 core-shell nanowire arrays directly serve as binder- and conductive-agent-free electrodes for lithium ion batteries, which demonstrate remarkably improved electrochemical performances with excellent capacity retention and high rate capability on cycling. They can maintain a stable reversible capacity of 1279 mA h g-1 after 100 cycles at a current density of 400 mA g-1 and a capacity higher than 340 mA h g-1 even at a current density as high as 8 A g-1. Such superior electrochemical performance of the electrodes made by directly growing electro-active highly porous Co3O4 on a nanostructured NiSix conductive current collector makes them very promising for applications in high-performance lithium ion batteries. © 2014 the Partner Organisations.

Citation Format(s)

Improved lithium ion battery performance by mesoporous Co3O 4 nanosheets grown on self-standing NiSix nanowires on nickel foam. / Chen, Huixin; Zhang, Qiaobao; Wang, Jiexi; Xu, Daguo; Li, Xinhai; Yang, Yong; Zhang, Kaili.

In: Journal of Materials Chemistry A, Vol. 2, No. 22, 14.06.2014, p. 8483-8490.

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