Facile fabrication of hierarchical ZnCo2O4/NiO core/shell nanowire arrays with improved lithium-ion battery performance

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

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Author(s)

  • Zhipeng Sun
  • Wei Ai
  • Jilei Liu
  • Xiaoying Qi
  • Yanlong Wang
  • Jianhui Zhu
  • Ting Yu

Detail(s)

Original languageEnglish
Pages (from-to)6563-6568
Journal / PublicationNanoscale
Volume6
Issue number12
Online published8 Apr 2014
Publication statusPublished - 21 Jun 2014
Externally publishedYes

Abstract

We report a facile and controllable strategy for the fabrication of three-dimensional (3D) ZnCo2O4/NiO core/shell nanowire arrays (ZCO/NiO NWs) on nickel (Ni) foam substrates by a simple, cost-effective, two-step, solution-based method. Ultra-thin NiO nanosheets are revealed to grow uniformly on the porous ZnCo2O4 nanowires with many interparticle mesopores, resulting in the formation of 3D core/shell nanowire arrays with hierarchical architecture. In comparison with the pristine ZnCo2O4 nanowire arrays (ZCO NWs), the ZCO/NiO NWs exhibit significantly improved Li storage properties, in terms of higher capacity, enhanced rate capability and improved cycling stability when applied as binders and additive-free anode materials for lithium-ion batteries. The superior Li storage performance of the ZCO/NiO NWs could be attributed to the synergetic effect between the ZnCo2O4 core and the NiO shell, as well as its unique hierarchical architecture, which ensures a large specific surface area and good conductivity. Our results may offer very useful guidelines in scrupulously designing 3D core/shell nanowire-array electrodes using cheap, earth-abundant materials in energy storage applications. 

Citation Format(s)

Facile fabrication of hierarchical ZnCo2O4/NiO core/shell nanowire arrays with improved lithium-ion battery performance. / Sun, Zhipeng; Ai, Wei; Liu, Jilei; Qi, Xiaoying; Wang, Yanlong; Zhu, Jianhui; Zhang, Hua; Yu, Ting.

In: Nanoscale, Vol. 6, No. 12, 21.06.2014, p. 6563-6568.

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