3D Graphene-Cobalt Oxide Electrode for High-Performance Supercapacitor and Enzymeless Glucose Detection

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

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Author(s)

  • Xiao-Chen Dong
  • Hang Xu
  • Xue-Wan Wang
  • Yin-Xi Huang
  • Mary B. Chan-Park
  • Lian-Hui Wang
  • Wei Huang
  • Peng Chen

Detail(s)

Original languageEnglish
Pages (from-to)3206-3213
Journal / PublicationACS Nano
Volume6
Issue number4
Online published21 Mar 2012
Publication statusPublished - 24 Apr 2012
Externally publishedYes

Abstract

Using a simple hydrothermal procedure, cobalt oxide (Co3O4) nanowires were in situ synthesized on three-dimensional (3D) graphene foam grown by chemical vapor deposition. The structure and morphology of the resulting 3D graphene/Co3O4 composites were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and Raman spectroscopy. The 3D graphene/Co3O4 composite was used as the monolithic free-standing electrode for supercapacitor application and for enzymeless electrochemical detection of glucose. We demonstrate that it is capable of delivering high specific capacitance of ∼1100 F g-1 at a current density of 10 A g-1 with excellent cycling stability, and it can detect glucose with a ultrahigh sensitivity of 3.39 mA mM-1 cm-2 and a remarkable lower detection limit of <25 nM (S/N = 8.5). © 2012 American Chemical Society.

Research Area(s)

  • 3D graphene, cobalt oxide, enzymeless detection, supercapacitor

Citation Format(s)

3D Graphene-Cobalt Oxide Electrode for High-Performance Supercapacitor and Enzymeless Glucose Detection. / Dong, Xiao-Chen; Xu, Hang; Wang, Xue-Wan et al.

In: ACS Nano, Vol. 6, No. 4, 24.04.2012, p. 3206-3213.

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