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Hierarchical ultrathin NiAl layered double hydroxide nanosheet arrays on carbon nanotube paper as advanced hybrid electrode for high performance hybrid capacitors
Zhang, Luojiang; Chen, Rui; Hui, Kwun Nam; Hui, Kwan San; Lee, Haiwon
2017-10
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
Volume325Pages:554-563
AbstractTo effectively improve the power density and rate capability of layered double hydroxide (LDH) based supercapacitors, a hybrid supercapacitor (HSC) comprising of hierarchical ultrathin NiAl-LDH nanosheet arrays on carbon nanotube paper (CNP-LDH) is developed with porous graphene nanosheets as the negative electrode for the first time. SEM image shows that hierarchical NiAI LDH nanosheet arrays are assembled by numerous ultrathin nanosheets with thickness of a few to tens of nanometers. Remarkably, with an operating voltage of 1.6 V, the HSC possesses a high energy density of 50.0 Wh kg(-1) at an average power density of 467 W kg(-1). Even at a fast discharging time of 3.9 s, a high energy density (23.3 Wh kg(-1)) could also be retained at a power density of 21.5 kW kg(-1). Moreover, the HSC exhibits cycling stability with a retention rate of 78% after 5000-cycle charge-discharge test at 5 A g(-1). The results inspire us to propose our high-performance CNP-LDH as a promising electrode for energy storage applications. (C) 2017 Published by Elsevier B.V.
KeywordLayered double hydroxide Hybrid supercapacitor Carbon nanotube paper Porous graphene Power density
DOI10.1016/j.cej.2017.05.101
URLView the original
Indexed BySCIE
Language英语
WOS Research AreaEngineering
WOS SubjectEngineering, Environmental ; Engineering, Chemical
WOS IDWOS:000403733800057
PublisherELSEVIER SCIENCE SA
The Source to ArticleWOS
Fulltext Access
Citation statistics
Cited Times [WOS]:36   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Recommended Citation
GB/T 7714
Zhang, Luojiang,Chen, Rui,Hui, Kwun Nam,et al. Hierarchical ultrathin NiAl layered double hydroxide nanosheet arrays on carbon nanotube paper as advanced hybrid electrode for high performance hybrid capacitors[J]. CHEMICAL ENGINEERING JOURNAL,2017,325:554-563.
APA Zhang, Luojiang,Chen, Rui,Hui, Kwun Nam,Hui, Kwan San,&Lee, Haiwon.(2017).Hierarchical ultrathin NiAl layered double hydroxide nanosheet arrays on carbon nanotube paper as advanced hybrid electrode for high performance hybrid capacitors.CHEMICAL ENGINEERING JOURNAL,325,554-563.
MLA Zhang, Luojiang,et al."Hierarchical ultrathin NiAl layered double hydroxide nanosheet arrays on carbon nanotube paper as advanced hybrid electrode for high performance hybrid capacitors".CHEMICAL ENGINEERING JOURNAL 325(2017):554-563.
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