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Facile and Sustainable Synthesis of Co 3 O 4 @Hollow-Carbon-Fiber for a Binder-Free Supercapacitor Electrode

2016; Wiley; Volume: 1; Issue: 20 Linguagem: Inglês

10.1002/slct.201601330

2365-6549

Wei Liu, Huailin Fan, Wenzhong Shen, Shijie Qu,

Advancements in Battery Materials

ChemistrySelectVolume 1, Issue 20 p. 6469-6475 Full Paper Facile and Sustainable Synthesis of Co3O4@Hollow-Carbon-Fiber for a Binder-Free Supercapacitor Electrode Wei Liu, Wei Liu State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of sciences, Taiyuan, 030001 PR China School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, 100049 PR ChinaSearch for more papers by this authorHuailin Fan, Huailin Fan State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of sciences, Taiyuan, 030001 PR China School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, 100049 PR ChinaSearch for more papers by this authorWenzhong Shen, Wenzhong Shen State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of sciences, Taiyuan, 030001 PR ChinaSearch for more papers by this authorProf. Shijie Qu, Corresponding Author Prof. Shijie Qu qusj@sxicc.ac.cn State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of sciences, Taiyuan, 030001 PR ChinaSearch for more papers by this author Wei Liu, Wei Liu State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of sciences, Taiyuan, 030001 PR China School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, 100049 PR ChinaSearch for more papers by this authorHuailin Fan, Huailin Fan State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of sciences, Taiyuan, 030001 PR China School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, 100049 PR ChinaSearch for more papers by this authorWenzhong Shen, Wenzhong Shen State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of sciences, Taiyuan, 030001 PR ChinaSearch for more papers by this authorProf. Shijie Qu, Corresponding Author Prof. Shijie Qu qusj@sxicc.ac.cn State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of sciences, Taiyuan, 030001 PR ChinaSearch for more papers by this author First published: 09 December 2016 https://doi.org/10.1002/slct.201601330Citations: 24Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Graphical Abstract Energy from cotton: cotton is used to prepare both positive (Co3O4@hollow-carbon-fibers) and negative electrodes of asymmetric supercapacitor via a facile method. The devices show superior electrochemical performance and light up a green LED for 30 min. Abstract The carbon fibers with hollow structure were prepared by carbonization of renewable and inexpensive cotton. The surface of hollow carbon fiber was further modified by Co3O4 nanoparticles via a simple impregnation method and subsequent calcination process. The prepared Co3O4@cotton-derived hollow carbon fibers (CHCFs) maintained the macroscopic morphology and flexibility of the cotton. As binder-free electrodes, Co3O4@CHCFs exhibited much better electrochemical behavior than that of pure Co3O4. Especially, Co3O4@CHCF-2 showed a high specific capacitance of 566.89 F g−1 at a current density of 1 A g−1 and high capacitance retention of 69.38 % at 15 A g−1 in 6 M KOH aqueous electrolyte. Using Co3O4@CHCFs as positive electrode and cotton-based activated carbon (AC) as negative electrode, our asymmetric supercapacitor exhibited high energy density and excellent cycling stability. Moreover, this electrode material can be easily prepared on a large scale due to its sustainability, low cost, facile preparation and environmental friendliness. Citing Literature Supporting Information As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Filename Description slct201601330-sup-0001-misc_information.pdf1.7 MB Supplementary Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article. Volume1, Issue20December 1, 2016Pages 6469-6475 RelatedInformation