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. Attached Files Name Description MIMEType Size Downloads 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, Haitao orcid.org/0000-0002-8442-7444 Du, Yong 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 Collection: Institute for Frontier Materials Related Links Link Description Connect to published version Go to link with your DU access privileges     Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved. Versions Version Filter Type Fri, 21 Aug 2015, 08:27:03 EST Sat, 22 Aug 2015, 05:01:31 EST Sat, 22 Aug 2015, 06:15:47 EST Wed, 26 Aug 2015, 15:25:52 EST Wed, 26 Aug 2015, 15:29:38 EST Wed, 14 Oct 2015, 14:31:44 EST Wed, 07 Sep 2016, 10:09:51 EST Wed, 06 Dec 2017, 06:16:20 EST Mon, 12 Feb 2018, 14:38:08 EST Mon, 12 Feb 2018, 14:39:23 EST Mon, 05 Mar 2018, 12:20:54 EST Filtered Full Citation counts:   Cited 9 times in TR Web of Science Cited 9 times in Scopus Search Google Scholar Access Statistics: 261 Abstract Views, 102 File Downloads  -  Detailed Statistics Created: Fri, 21 Aug 2015, 08:27:03 EST

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