CuO nanoparticles supported on carbon microspheres as electrode material for supercapacitors

C/CuO nanocomposites were prepared by hydrothermal treatment of copper nitrate with starch, followed by H 2 O 2 oxidation and calcination. Structure characterizations show that high crystalline CuO nanoparticles with average size of ca. 40 nm are monodispersed on carbon microspheres. When used as el...

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Bibliographic Details
Published in:Ionics 2015-01, Vol.21 (1), p.185-190
Main Authors: Fan, Yang, Liu, Pei-Fang, Yang, Zi-Juan
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Condensed Matter Physics
Electrochemistry
Energy Storage
Optical and Electronic Materials
Original Paper
Renewable and Green Energy
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Summary:C/CuO nanocomposites were prepared by hydrothermal treatment of copper nitrate with starch, followed by H 2 O 2 oxidation and calcination. Structure characterizations show that high crystalline CuO nanoparticles with average size of ca. 40 nm are monodispersed on carbon microspheres. When used as electrode material for supercapacitors, the C/CuO nanocomposite exhibits high specific capacitance of 205 F g −1 at a current density of 1 A g −1 and excellent rate capacity (78 % capacitance was retained when the current density increased from 0.5 to 10 A g −1 ). It also shows good cycling stability with capacitance retention of 91 % after 1,000 cycles.
ISSN:0947-7047
1862-0760
DOI:10.1007/s11581-014-1158-4