Hollow nanostructures of metal oxides as next generation electrode materials for supercapacitors

Hollow nanostructures of copper oxides help to stabilize appreciably higher electrochemical characteristics than their solid counter parts of various morphologies. The specific capacitance values, calculated using cyclic voltammetry (CV) and charge-discharge (CD) studies, are found to be much higher...

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Bibliographic Details
Published in:Scientific reports 2018-01, Vol.8 (1), p.1307-12, Article 1307
Main Authors: Sharma, Vikas, Singh, Inderjeet, Chandra, Amreesh
Format: Article
Language:English
Subjects:
639/4077/4079/4105
639/925
Alternative energy sources
Cadmium
Capacitance
Copper
Electrochemistry
Energy storage
Humanities and Social Sciences
Ion transport
multidisciplinary
Oxides
Science
Science (multidisciplinary)
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Summary:Hollow nanostructures of copper oxides help to stabilize appreciably higher electrochemical characteristics than their solid counter parts of various morphologies. The specific capacitance values, calculated using cyclic voltammetry (CV) and charge-discharge (CD) studies, are found to be much higher than the values reported in literature for copper oxide particles showing  intriguing morphologies or even composites with trendy systems like CNTs, rGO, graphene, etc. The proposed cost-effective synthesis route makes these materials industrially viable for application in alternative energy storage devices. The improved electrochemical response can be attributed to effective access to the higher number of redox sites that become available on the surface, as well as in the cavity of the hollow particles. The ion transport channels also facilitate efficient de-intercalation, which results in the enhancement of cyclability and Coulombic efficiency. The charge storage mechanism in copper oxide structures is also proposed in the paper.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-018-19815-y