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Co3O4@CoS core-shell nanosheets on carbon cloth for high performance supercapacitor electrodes

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dc.title Co3O4@CoS core-shell nanosheets on carbon cloth for high performance supercapacitor electrodes en
dc.contributor.author Ning, Jinfeng
dc.contributor.author Zhang, Tianyu
dc.contributor.author He, Ying
dc.contributor.author Jia, Congpu
dc.contributor.author Sáha, Petr
dc.contributor.author Cheng, Qilin
dc.relation.ispartof Materials
dc.identifier.issn 1996-1944 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2017
utb.relation.volume 10
utb.relation.issue 6
dc.type article
dc.language.iso en
dc.publisher Molecular Diversity Preservation International (MDPI)
dc.identifier.doi 10.3390/ma10060608
dc.relation.uri http://www.mdpi.com/1996-1944/10/6/608
dc.subject Co3O4 en
dc.subject CoS en
dc.subject carbon cloth en
dc.subject supercapacitor en
dc.subject nanostructured arrays en
dc.description.abstract In this work, a two-step electrodeposition strategy is developed for the synthesis of core-shell Co3O4@CoS nanosheet arrays on carbon cloth (CC) for supercapacitor applications. Porous Co3O4 nanosheet arrays are first directly grown on CC by electrodeposition, followed by the coating of a thin layer of CoS on the surface of Co3O4 nanosheets via the secondary electrodeposition. The morphology control of the ternary composites can be easily achieved by altering the number of cyclic voltammetry (CV) cycles of CoS deposition. Electrochemical performance of the composite electrodes was evaluated by cyclic voltammetry, galvanostatic charge-discharge and electrochemical impedance spectroscopy techniques. The results demonstrate that the Co3O4@CoS/CC with 4 CV cycles of CoS deposition possesses the largest specific capacitance 887.5 F·g-1 at a scan rate of 10 mV·s-1 (764.2 F·g-1 at a current density of 1.0 A·g-1), and excellent cycling stability (78.1% capacitance retention) at high current density of 5.0 A·g-1 after 5000 cycles. The porous nanostructures on CC not only provide large accessible surface area for fast ions diffusion, electron transport and efficient utilization of active CoS and Co3O4, but also reduce the internal resistance of electrodes, which leads to superior electrochemical performance of Co3O4@CoS/CC composite at 4 cycles of CoS deposition. © 2017 by the authors. en
utb.faculty University Institute
dc.identifier.uri http://hdl.handle.net/10563/1007426
utb.identifier.obdid 43876558
utb.identifier.scopus 2-s2.0-85020418535
utb.identifier.wok 000404415000042
utb.source j-scopus
dc.date.accessioned 2017-09-08T12:14:55Z
dc.date.available 2017-09-08T12:14:55Z
dc.description.sponsorship National Natural Science Foundation of China [21371057]; International Science and Technology Cooperation Program of China [2016YFE0131200, 2015DFA51220]; International Cooperation Project of Shanghai Municipal Science and Technology Committee [15520721100]
dc.rights Attribution 4.0 International
dc.rights.uri http://creativecommons.org/licenses/by/4.0/
dc.rights.access openAccess
utb.ou Centre of Polymer Systems
utb.contributor.internalauthor Sáha, Petr
utb.contributor.internalauthor Cheng, Qilin
utb.scopus.affiliation Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China; Centre of Polymer Systems, Tomas Bata University in Zlin, Nam. T. G. Masaryka 5555, Zlin, Czech Republic
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Attribution 4.0 International Except where otherwise noted, this item's license is described as Attribution 4.0 International