期刊
SYNTHETIC METALS
卷 189, 期 -, 页码 69-76出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.synthmet.2014.01.001
关键词
Graphene; Poly(3,4-ethylenedioxythiophene) Multiwalled carbon nanotubes; Electrode material; Nanocomposite; Supercapacitor
资金
- National Natural Science Foundation of China [21272033]
- Innovation Funds of State key Laboratory of Electronic Thin Films and Integrated Device [CXJJ201104]
The hybrid nanocomposite based on poly(3,4-ethylenedioxythiophene)/multiwalled carbon nanotubes/graphene was prepared by reducing the graphene oxide with hydrazine in the presence of multiwalled carbon nanotubes (MWCNTs) and the anchored poly(3,4-ethylenedioxythiophene) hollow spheres (b-PEDOT). The transmission electron microscope (TEM) images of b-PEDOT/MWCNTs/rGO nanocomposite reveal that the b-PEDOT and MWCNTs were sandwiched between layers of graphene sheets. The b-PEDOT nanoparticles act as spacers to create gaps between neighboring graphene sheets, resulting in a higher surface area compared to pure graphene. Furthermore, it shows a significant pseudo-capacitance energy storage mechanism during the charge/discharge process. And the MWCNTs improve electric conductivity of the nanocomposite and contribute to a low equivalent series resistance (ESR). Utilizing this composite material, a specific capacitance of 225 F g(-1) at a current density of 0.1 A g(-1) has been achieved. (C) 2014 Elsevier B.V. All rights reserved.
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