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A self-supported, flexible, binder-free pseudo-supercapacitor electrode material with high capacitance and cycling stability from hollow, capsular polypyrrole fibers

Li, Zhenyu, Cai, Jie, Cizek, Pavel, Niu, Haitao, Du, Yong and Lin, Tong 2015, A self-supported, flexible, binder-free pseudo-supercapacitor electrode material with high capacitance and cycling stability from hollow, capsular polypyrrole fibers, Journal of materials chemistry A, vol. 3, no. 31, pp. 16162-16167, doi: 10.1039/c5ta03585f.

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Title A self-supported, flexible, binder-free pseudo-supercapacitor electrode material with high capacitance and cycling stability from hollow, capsular polypyrrole fibers
Author(s) Li, Zhenyu
Cai, Jie
Cizek, Pavel
Niu, HaitaoORCID iD for Niu, Haitao orcid.org/0000-0002-8442-7444
Du, Yong
Lin, TongORCID iD for Lin, Tong orcid.org/0000-0002-1003-0671
Journal name Journal of materials chemistry A
Volume number 3
Issue number 31
Start page 16162
End page 16167
Total pages 6
Publisher Royal Society of Chemistry
Place of publication Cambridge, Eng.
Publication date 2015-08-21
ISSN 2050-7488
2050-7496
Summary Flexible energy devices with high performance and long-term stability are highly promising for applications in portable electronics, but remain challenging to develop. As an electrode material for pseudo-supercapacitors, conducting polymers typically show higher energy storage ability over carbon materials and larger conductivity than transition-metal oxides. However, conducting polymer-based supercapacitors often have poor cycling stability, attributable to the structural rupture caused by the large volume contrast between doping and de-doping states, which has been the main obstacle to their practical applications. Herein, we report a simple method to prepare a flexible, binder-free, self-supported polypyrrole (PPy) supercapacitor electrode with high cycling stability through using novel, hollow PPy nanofibers with porous capsular walls as a film-forming material. The unique fiber structure and capsular walls provide the PPy film with enough free-space to adapt to volume variation during doping/de-doping, leading to super-high cycling stability (capacitance retention > 90% after 11000 charge-discharge cycles at a high current density of 10 A g-1) and high rate capability (capacitance retention ∼ 82.1% at a current density in the range of 0.25-10 A g-1).
Language eng
DOI 10.1039/c5ta03585f
Field of Research 091205 Functional Materials
Socio Economic Objective 860406 Synthetic Fibres
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2015, Royal Society of Chemistry
Persistent URL http://hdl.handle.net/10536/DRO/DU:30076079

Document type: Journal Article
Collections: Institute for Frontier Materials
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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.