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Erschienen in: Journal of Materials Science: Materials in Electronics 9/2018

13.02.2018

Simple preparation of graphene-decorated NiCo2O4 hollow nanospheres with enhanced performance for supercapacitor

verfasst von: Bolin Li, Qianqian Sun, Rongrong Yang, Dehao Li, Zesheng Li

Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 9/2018

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Abstract

Supercapacitor is a new kind of energy storage devices with characteristics of high power density, fast charge–discharge rate and long cycle life. In this paper, graphene-decorated NiCo2O4 hollow nanospheres (GE/NiCo2O4) were synthesized by a consecutive hydrothermal and sintering method for supercapacitor application. The structures and morphologies of the samples were characterized by XRD, SEM and TEM. The electrochemical properties of the electrodes were measured by CV, CDC and EIS. The testing results showed that the specific capacitance, rate capability and stability the GE/NiCo2O4 electrode are obviously improved in comparison to those of single NiCo2O4 electrode, which demonstrated that introducing graphene onto the surface of NiCo2O4 hollow nanospheres can produce high-performance composite electrode material for supercapacitor application.

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Metadaten
Titel
Simple preparation of graphene-decorated NiCo2O4 hollow nanospheres with enhanced performance for supercapacitor
verfasst von
Bolin Li
Qianqian Sun
Rongrong Yang
Dehao Li
Zesheng Li
Publikationsdatum
13.02.2018
Verlag
Springer US
Erschienen in
Journal of Materials Science: Materials in Electronics / Ausgabe 9/2018
Print ISSN: 0957-4522
Elektronische ISSN: 1573-482X
DOI
https://doi.org/10.1007/s10854-018-8763-3

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