We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
A Facile One-Pot Method for Co<sub>3</sub>O<sub>4</sub>/Graphene Composite as Efficient Electrode Materials for Supercapacitors.
- Authors
Wang, Yongliang; Ma, Rongxin; Liu, Lizhu; Xu, Zhanchun; Li, Fenghui
- Abstract
As one of the electrode materials for supercapacitor, Co3O4/graphene composite was mainly synthesized via two-steps method. Here, a facile one-pot method was used for Co3O4/graphene composite, and the performances of one-pot-synthesized Co3O4/graphene composite were carefully investigated. Liquid-phase exfoliation was used for graphene and the -band/-band ratio of liquid-phase exfoliated graphene was only 0.094, which indicated that the graphene had low defect density and enhanced electrical conductivity. Morphologies investigation of Co3O4/graphene composites indicated that Co3O4 nanoparticles with mean diameter of 14nm were uniformly anchored on graphene sheets. The facile one-pot method associated with liquid-phase exfoliated graphene induced Co3O4/graphene composite with enhanced specific capacitance of 392 Fg at a current density of 1 Ag. The Co3O4/graphene composite also expressed relatively small internal resistance and diffusion resistance (0.36 and 0.45, respectively). Moreover, the synthesized Co3O4/graphene composite yielded excellent rate performances with only 9.5% capacitance loss when current density was increased by a factor of 10. Liquid-phase exfoliation was used for graphene and the D-band/G-band ratio of liquid-phase exfoliated graphene was only 0.094, which indicated the graphene had low defects density and enhanced electrical conductivity. A facile one-pot method was used for Co3O4/graphene composite. The facile one-pot method associated with liquid-phase exfoliated graphene induced Co3O4/graphene composite with enhanced specific capacitance of 392 F⋅g−1 at a current density of 1A⋅g−1.
- Subjects
SUPERCAPACITOR electrodes; GRAPHENE synthesis; CARBON monoxide; COMPOSITE materials; ELECTRIC conductivity; LIQUID phase epitaxy
- Publication
NANO, 2017, Vol 12, Issue 8, p-1
- ISSN
1793-2920
- Publication type
Article
- DOI
10.1142/S1793292017501028