Enhanced electrochemical activity of low temperature solution process synthesized Co3O4 nanoparticles for pseudo-supercapacitors applications

The highly uniform Co3O4 nanoparticles (NPs) were synthesized by a low temperature solution process at 70°C and utilized for pseudo-supercapacitors. The synthesized Co3O4 NPs possessed well-crystalline semispherical morphology and were extensively characterized in terms of structural, crystalline an...

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Bibliographic Details
Published in:Ceramics international 2016-01, Vol.42 (1), p.1879-1885
Main Authors: Li, Zhen-Yu, Bui, Phuong T.M., Kwak, Do-Hwan, Akhtar, M. Shaheer, Yang, O-Bong
Format: Article
Language:English
Subjects:
B. Surfaces
Capacitance
Co3O4 nanoparticles
Electrochemical properties
Supercapacitor
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Summary:The highly uniform Co3O4 nanoparticles (NPs) were synthesized by a low temperature solution process at 70°C and utilized for pseudo-supercapacitors. The synthesized Co3O4 NPs possessed well-crystalline semispherical morphology and were extensively characterized in terms of structural, crystalline and electrochemical properties. The synthesized Co3O4 NPs based electrode exhibited a reasonable specific capacitance of ~304F/g in 1M KOH aqueous solution. The capacitance was drastically increased to ~480F/g when the electrode was prepared by mixing Co3O4 NPs and super-P carbon. Co3O4 NPs based electrodes attained the excellent cycling stability with the retention ratio of ~88.6% after 1000 cycles.
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2015.09.155