UM
Carbon nanotube@manganese oxide nanosheet core-shell structure encapsulated within reduced graphene oxide film for flexible all-solid-state asymmetric supercapacitors
Wu, Shuxing; San Hui, Kwan; Hui, Kwun Nam
2018-06
Source PublicationCARBON
ISSN0008-6223
Volume132Pages:776-784
AbstractTo achieve flexible energy storage devices with high performance, a new class of flexible electrodes with exquisite architectures that provide well-defined pathways for efficient ionic and electronic transport is highly needed. A flexible 3D electrode is fabricated based on assembling 1D carbon nanotube@manganese oxide (MnO2) nanosheet core-shell structures (CM) with 2D reduced graphene oxide (rGO) nanosheets. MnO2 nanosheets are grafted vertically along the carbon nanotube backbone through a secondary (seeded) growth. Flexible hybrid films (GCM) composed of CM and rGO are prepared by vacuum filtration of the mixed dispersions of both components assisted by electrostatic interactions. By adopting this ternary hybrid architecture, the GCM electrode exhibits exceptional charge storage capability in 1 M Na2SO4 aqueous electrolyte with high specific capacitance (298 F g(-1) at 0.5 A g(-1)), good rate capability, and high cycling stability (90.3% retention over 5000 cycles). A highly flexible all-solid-state asymmetrical supercapacitor is assembled with GCM as the positive electrode and holey graphene film spaced with carbon sphere (H-GCS) as the negative electrode. GCM//H-GCS asymmetric supercapacitor delivers a maximum energy density of 24.6 Wh kg(-1) and a power density of 9005.3 W kg(-1) with excellent cycle life of 75.9% retention after 10 000 cycles. (c) 2017 Elsevier Ltd. All rights reserved.
DOI10.1016/j.carbon.2017.12.051
URLView the original
Indexed BySCI
Language英语
WOS Research AreaChemistry ; Materials Science
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary
WOS IDWOS:000428233000082
PublisherPERGAMON-ELSEVIER SCIENCE LTD
The Source to ArticleWOS
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Citation statistics
Cited Times [WOS]:18   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Recommended Citation
GB/T 7714
Wu, Shuxing,San Hui, Kwan,Hui, Kwun Nam. Carbon nanotube@manganese oxide nanosheet core-shell structure encapsulated within reduced graphene oxide film for flexible all-solid-state asymmetric supercapacitors[J]. CARBON,2018,132:776-784.
APA Wu, Shuxing,San Hui, Kwan,&Hui, Kwun Nam.(2018).Carbon nanotube@manganese oxide nanosheet core-shell structure encapsulated within reduced graphene oxide film for flexible all-solid-state asymmetric supercapacitors.CARBON,132,776-784.
MLA Wu, Shuxing,et al."Carbon nanotube@manganese oxide nanosheet core-shell structure encapsulated within reduced graphene oxide film for flexible all-solid-state asymmetric supercapacitors".CARBON 132(2018):776-784.
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