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Hydrangea-like multi-scale carbon hollow submicron spheres with hierarchical pores for high performance supercapacitor electrodes

Guo, Daying, Chen, Xi'an, Fang, Zhipeng, He, Yufeng, Zheng, Cong, Yang, Zhi, Yang, Keqin, Chen, Ying and Huang, Shaoming 2015, Hydrangea-like multi-scale carbon hollow submicron spheres with hierarchical pores for high performance supercapacitor electrodes, Electrochimica acta, vol. 176, pp. 207-214, doi: 10.1016/j.electacta.2015.07.032.

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Title Hydrangea-like multi-scale carbon hollow submicron spheres with hierarchical pores for high performance supercapacitor electrodes
Author(s) Guo, Daying
Chen, Xi'an
Fang, Zhipeng
He, Yufeng
Zheng, Cong
Yang, Zhi
Yang, Keqin
Chen, YingORCID iD for Chen, Ying orcid.org/0000-0002-7322-2224
Huang, Shaoming
Journal name Electrochimica acta
Volume number 176
Start page 207
End page 214
Total pages 8
Publisher Pergamon Press
Place of publication Oxford, Eng.
Publication date 2015-09-10
ISSN 0013-4686
Keyword(s) hydrangea-like
carbon hollow submicron spheres
mesoporous channels
supercapacitor
gravimetric and volumetric capacitance
Summary Uniform hydrangea-like multi-scale carbon hollow submicron spheres (HCSSg) are fabricated by a simple hydrothermal method using glucose as carbon source and fibrous silicon dioxides spheres as shape guide. Structure characterization suggests that petal-like partially graphitized carbon nanosheets with the thickness of about 10 nm arranged in three dimensions (3D) to form the hydrangea-like hollow spheres (size ranging from 250 to 500 nm) with mesoporous channels, which can be conducive to be a high specific surface area (934 m2 g-1) and bulk density (0.87 cm g-3), hierarchical pores structure with good conductivity. As a result, the HCSSg has been demonstrated to be a supercapacitor electrode material with high gravimetric (386 F g-1 at 0.2 A g-1) and outstanding volumetric (335 F cm-3) capacitance, good rate capability and cycling stability with 94% capacitance retention after 5000 cycles in aqueous electrolytes, thus suggesting its application potential.
Language eng
DOI 10.1016/j.electacta.2015.07.032
Field of Research 100708 Nanomaterials
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30078956

Document type: Journal Article
Collection: Institute for Frontier Materials
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