This work was supported by the National Natural Science Foundation of China (51076094). Thank Instrumental Analysis Center of SJTU for XRD testing.
Preparation of Few Layer Three-dimensional Graphene Networks by CVD for Energy Storage Applications†
Article first published online: 6 MAR 2014
© 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Chemical Vapor Deposition
Volume 20, Issue 1-2-3, pages 14–22, March 2014
How to Cite
Tang, B. and Hu, G. (2014), Preparation of Few Layer Three-dimensional Graphene Networks by CVD for Energy Storage Applications. Chem. Vap. Deposition, 20: 14–22. doi: 10.1002/cvde.201207052
- Issue published online: 6 MAR 2014
- Article first published online: 6 MAR 2014
- Manuscript Revised: 3 JUN 2013
- Manuscript Received: 28 DEC 2012
Three-dimensional graphene networks (3DGNs) with a controllable number of layers (from monolayer to few layers) are fabricated by CVD on a Ni foam rod (NFR) template. The special morphology of the NFR and accompanying concentration gradients of CH4 gas provide the necessary conditions to deposit the 3DGNs with varied thicknesses on different areas of one substrate. The high conductivity, large Brunner-Emmett-Teller (BET) area, and three-dimensional network of the 3DGNs make it a potential material for use in the electrochemical field. Supercapacitors with the 3DGNs-based electrode show a high energy density ∼34.2 Wh kg−1 at a current density of 100 mA g−1, and a specific capacitance of 246 F g−1 is obtained in a 30 wt.-% KOH aqueous electrolyte solution. Moreover, the resultant devices maintain high performances under high current density conditions, indicating the outstanding stability of the prepared 3DGNs.