期刊
ELECTROCHIMICA ACTA
卷 121, 期 -, 页码 49-56出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2013.12.137
关键词
nanocomposite; electrode material; flexible; micro-supercapacitor
资金
- National Natural Science Foundation of China [21272033]
- State key Laboratory of Electronic Thin Films and Integrated Device [CXJJ201104]
In this work, a novel supercapacitor electrode material named MnO2/b-PEDOT/MWCNTs is synthesized by first preparing the PEDOT hollow spheres (b-PEDOT), and then anchoring the b-PEDOT on the surface of MWCNTs. At last, wrapping MnO2 nano-grains onto the surface of b-PEDOT and these composite spherical grains form a network structure with multiwalled carbon nanotubes (MWCNTs) after the coprecipitation process. Utilizing this hybrid material, a specific capacitance of 270 F g(-1) at a current density of 0.3 A g(-1) is achieved. A new flexible, low cost and easy fabricated micro-supercapacitor device by using MnO2/b-PEDOT/MWCNTs nanocomposite as electrode material is assemblied, which has a relatively rectangle in shape of standard cyclic voltammetry curves, indicating excellent supercapacitor behavior and a specific capacitance of 110 F g(-1) at a current density of 2 A g(-1) is achieved. The CV curves of the assemblied micro-supercapacitor under different bending states showed that there is no noticeable difference of electrochemical properties after being folded. (C) 2014 Elsevier Ltd. All rights reserved.
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