Peapod-like V2O3 nanorods encapsulated into carbon as binder-free and flexible electrodes in 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)

  • Xingxing Li
  • Jijiang Fu
  • Zhiguo Pan
  • Jianjun Su
  • Jiangwen Xu
  • Biao Gao
  • Lei Wang
  • Xuming Zhang

Detail(s)

Original languageEnglish
Pages (from-to)58-66
Journal / PublicationJournal of Power Sources
Volume331
Online published14 Sep 2016
Publication statusPublished - 1 Nov 2016

Abstract

Designing and fabricating electrodes with excellent mechanical flexibility and superior electrochemical performance for high-performance lithium ion battery (LIBs) is challenging. Herein, ultralong peapod-like nanowires (NWs) composed of short vanadium sesquioxide nanorods (V2O3 NRs) encapsulated with carbon are produced as high-performance anode materials. The freestanding and flexible film has a high capacity of 210 mAh g−1 at a current density of 0.1 C, and exhibits appreciable rate capability with 68% capacitance retention when the current density is increased from 0.1 to 1 C, and excellent long-term cycling stability without apparent capacity fading after 125 cycles, which is better then that of the active carbon mixed V2O3 NRs and bare V2O3 NRs. The outstanding electrochemical performance is attributed to proper accommodation of the volume expansion of the vanadium oxide in the carbon in the lithiation/delithiation process as well as the outer conductive three-dimensional (3D) carbon network. The formation mechanism of the peapod-like structure is investigated by thermogravimetric analysis connected to a mass spectrometer (MS). The ultralong peapod-like nanostructure overcomes the physical and chemical drawbacks of vanadium oxide and has large potential applicability for flexible energy-storage devices.

Research Area(s)

  • Anode materials, Cycling stability, Peapod-like structure, V2O3 nanorod

Citation Format(s)

Peapod-like V2O3 nanorods encapsulated into carbon as binder-free and flexible electrodes in lithium-ion batteries. / Li, Xingxing; Fu, Jijiang; Pan, Zhiguo; Su, Jianjun; Xu, Jiangwen; Gao, Biao; Peng, Xiang; Wang, Lei; Zhang, Xuming; Chu, Paul K.

In: Journal of Power Sources, Vol. 331, 01.11.2016, p. 58-66.

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