Synthesis and characterization of graphene hollow spheres for application in supercapacitors

Synthesis and characterization of graphene hollow spheres for application in supercapacitors

We have successfully assembled graphene nanosheets into spherical shells using polystyrene spheres as templates. Compared with stacked planar graphene, the as-prepared graphene spherical shells have more free space in between the spheres, which results in a larger accessible surface area for adsorpt...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2013-01, Vol.1 (48), p.15423-15428
Hauptverfasser: Shao, Qingguo, Tang, Jie, Lin, Yuexian, Zhang, Feifei, Yuan, Jinshi, Zhang, Han, Shinya, Norio, Qin, Lu-Chang
Format: Artikel
Sprache:eng
Schlagworte:
Accessibility
Capacitors
Electrolytes
Graphene
Spherical shells
Supercapacitors
Surface chemistry
Sustainability
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:We have successfully assembled graphene nanosheets into spherical shells using polystyrene spheres as templates. Compared with stacked planar graphene, the as-prepared graphene spherical shells have more free space in between the spheres, which results in a larger accessible surface area for adsorption of electrolyte ions in supercapacitors. Electrochemical tests show that the graphene hollow spheres exhibit a high specific capacitance of 273 F g super(-1) and excellent electrochemical stability.
ISSN:2050-7488
2050-7496
DOI:10.1039/c3ta12789c