UM
Rational design of integrated CuO@CoxNi1−x(OH)2 nanowire arrays on copper foam for high-rate and long-life supercapacitors
Wu S.3; Guo H.1; Hui K.S.4; Hui K.N.2
2019-02-01
Source PublicationElectrochimica Acta
ISSN00134686
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@CoNi(OH) nanowire arrays grown on 3D highly conductive copper foam. The optimized CuO@CoNi(OH) electrode delivers an ultrahigh specific capacity of 374.7 mAh g at 2 A g with exceptional rate capability (301.7 mAh g at 50 A g) and remarkable cycling stability (95.9% after 10 000 cycles at 50 A g). A flexible asymmetric solid-state supercapacitor (ASC) is fabricated using the optimized CuO@CoNi(OH) 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 46.5 Wh kg with a power density of 526.9 W kg. The ASC also exhibits excellent cycling stability with a capacity retention of 84.3% after 10 000 cycles at a current density of 7 A g.
KeywordCopper foam Copper oxide Flexible asymmetric supercapacitor Nanowire arrays Nickel–cobalt hydroxide
DOI10.1016/j.electacta.2018.10.183
URLView the original
Language英語
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Cited Times [WOS]:2   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.Hanyang University
2.Universidade de Macau
3.Guangdong University of Technology
4.University of East Anglia
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GB/T 7714
Wu S.,Guo H.,Hui K.S.,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 S.,Guo H.,Hui K.S.,&Hui K.N..(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 S.,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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