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Supercapacitor performance of porous nickel cobaltite nanosheets
Chen,Xin1; Xie,Rui2; Li,Hui3; Jaber,F.4; Musharavati,F.5; Zalnezhad,E.6; Bae,S.7; Hui,K. S.8; Hui,K. N.9
2020-12-01
Source PublicationScientific Reports
Volume10Issue:1
AbstractIn this work, nickel cobaltite (NiCoO) nanosheets with a porous structure were fabricated on nickel foam as a working electrode for supercapacitor applications. The nanosheets were fabricated by electrochemical deposition of nickel–cobalt hydroxide on the nickel foam substrate at ambient temperature in a three-electrode cell followed by annealing at 300 °C to transform the coating into a porous NiCoO nanosheet. Field emission scanning electron microscopy and transmission electron microscopy revealed a three-dimensional mesoporous structure, which facilitates ion transport and electronic conduction for fast redox reactions. For one cycle, the NiCoO electrodeposited nickel foam has a high specific capacitance (1734.9 F g) at a current density (CD) of 2 A g. The electrode capacitance decreased by only approximately 12.7% after 3500 cycles at a CD of 30 A g. Moreover, a solid-state asymmetric supercapacitor (ASC) was built utilising the NiCoO nanosheets, carbon nanotubes, and a polyvinyl alcohol-potassium hydroxide gel as the anode, cathode, and solid-state electrolyte, respectively. The ASC displayed great electrochemical properties with a 42.25 W h kg energy density at a power density of 298.79 W kg.
DOI10.1038/s41598-020-75946-1
URLView the original
Language英语
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Cited Times [WOS]:0   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Corresponding AuthorZalnezhad,E.
Affiliation1.Department of Mechanical Convergence Engineering,Hanyang University,Seoul,222 Wangsimni-ro, Seongdong-gu,04763,South Korea
2.Department of Electronic Information,Shandong Xiandai University,Jinan,250000,China
3.Department of Chemical Engineering,Hanyang University,Seoul,222 Wangsimni-ro, Seongdong-gu,04763,South Korea
4.Department of Biomedical Engineering,Ajman University,Ajman,2758,United Arab Emirates
5.Department of Mechanical and Industrial Engineering,College of Engineering,Qatar University,Doha,2713,Qatar
6.Department of Chemical and Biomedical Engineering,University of Texas At San Antonio,San Antonio,United States
7.Department of Architectural Engineering,Hanyang University,Seoul,04763,South Korea
8.School of Engineering,University of East Anglia,Norwich,NR4 7TJ,United Kingdom
9.Joint Key Laboratory of the Ministry of Education,Institute of Applied Physics and Materials Engineering,University of Macau,Taipa,Avenida da Universidade,999078,Macao
Recommended Citation
GB/T 7714
Chen,Xin,Xie,Rui,Li,Hui,et al. Supercapacitor performance of porous nickel cobaltite nanosheets[J]. Scientific Reports,2020,10(1).
APA Chen,Xin,Xie,Rui,Li,Hui,Jaber,F.,Musharavati,F.,Zalnezhad,E.,Bae,S.,Hui,K. S.,&Hui,K. N..(2020).Supercapacitor performance of porous nickel cobaltite nanosheets.Scientific Reports,10(1).
MLA Chen,Xin,et al."Supercapacitor performance of porous nickel cobaltite nanosheets".Scientific Reports 10.1(2020).
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