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Rational design of integrated CuO@CoxNi1-x(OH)(2) nanowire arrays on copper foam for high-rate and long-life supercapacitors
Wu, Shuxing1; Guo, Hengzhi2; Hui, Kwan San3; Hui, Kwun Nam4
2019-02
Source PublicationELECTROCHIMICA ACTA
ISSN0013-4686
Volume295Pages:759-768
AbstractRational electrode architectural design, favorable electrode composition, and versatile synthesis approach play a significant role in developing advanced electrodes for high-performance supercapacitor. In this work, we report a facile approach for fabricating 1D hierarchical CuO@CoxNi1-x(OH)(2) nanowire arrays grown on 3D highly conductive copper foam. The optimized CuO@Co0.2Ni0.8(OH)(2) electrode delivers an ultrahigh specific capacity of 374.7 mAh g(-1) at 2 A g(-1) with exceptional rate capability (301.7 mAh g(-1) at 50 A g(-1)) and remarkable cycling stability (95.9% after 10 000 cycles at 50 A g(-1)). A flexible asymmetric solid-state supercapacitor (ASC) is fabricated using the optimized CuO@Co-0.2-Ni-0.8(OH)(2) as the positive electrode, activated carbon-coated nickel foam as the negative electrode, and polyvinyl alcohol/KOH gel as electrolyte. The flexible ASC operating with a potential window of 0-1.6 V delivers an energy density of 46.5Wh kg(-1) with a power density of 526.9 W kg(-1). The ASC also exhibits excellent cycling stability with a capacity retention of 84.3% after 10 000 cycles at a current density of 7 Ag-1. (C) 2018 Elsevier Ltd. All rights reserved.
KeywordCopper oxide Nickel-cobalt hydroxide Copper foam Nanowire arrays Flexible asymmetric supercapacitor
DOI10.1016/j.electacta.2018.10.183
URLView the original
Indexed BySCI
Language英语
WOS Research AreaElectrochemistry
WOS SubjectElectrochemistry
WOS IDWOS:000454249800091
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Fulltext Access
Citation statistics
Cited Times [WOS]:2   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.Guangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou 510006, Guangdong, Peoples R China;
2.Hanyang Univ, Dept Mech Convergence Engn, 17 Haengdang Dong, Seoul 133791, South Korea;
3.Univ East Anglia, Fac Sci, Engn, Norwich NR4 7TJ, Norfolk, England;
4.Univ Macau, Inst Appl Phys & Mat Engn, Ave Univ, Macau, Peoples R China
Recommended Citation
GB/T 7714
Wu, Shuxing,Guo, Hengzhi,Hui, Kwan San,et al. Rational design of integrated CuO@CoxNi1-x(OH)(2) nanowire arrays on copper foam for high-rate and long-life supercapacitors[J]. ELECTROCHIMICA ACTA,2019,295:759-768.
APA Wu, Shuxing,Guo, Hengzhi,Hui, Kwan San,&Hui, Kwun Nam.(2019).Rational design of integrated CuO@CoxNi1-x(OH)(2) nanowire arrays on copper foam for high-rate and long-life supercapacitors.ELECTROCHIMICA ACTA,295,759-768.
MLA Wu, Shuxing,et al."Rational design of integrated CuO@CoxNi1-x(OH)(2) nanowire arrays on copper foam for high-rate and long-life supercapacitors".ELECTROCHIMICA ACTA 295(2019):759-768.
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