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Self-assembled 3D hierarchical nanostructure of reduced GO nanosheets intercalated with CDs for high-rate supercapacitor electrodes
Wang, Meiling1; Han, Fangming1
2017-12-15
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
Volume727Issue:Pages:991-997
AbstractA simple hydrothermal method for the preparation of 3D net-work hierarchical nanostructures consisting of carbon dots (CDs) intercalated between reduced graphene oxide (GO) nanosheets (denoted as CDs@rGONS) is demonstrated in this work. The incorporation of CDs as nano-spacers has effectively preventing aggregations of the rGONS, and at the same time greatly improved the reduction efficiency of the GO, both of which obviously enhance the electrochemical performance of the hierarchical nanostructures. Simple supercapacitors were assembled using the samples with different CDs/GO mass ratios, and it was proved that for the sample obtained with a CDs/GO mass ratio of 0.6 (denoted as CDs@rGONS(0.6)), a high specific capacitance of 239 F/g was obtained according to the CV curves. Moreover, a high energy density of 24 Wh/kg at 1 A/g and a high power density of 15.8 kW/kg at 10 A/g were obtained respectively, both of which are much higher than those without the presence of CDs. The good cycle stability (92.1% capacitance retention after 11500 cycles) of the sample was studied too. These excellent electrochemical performances proved their potential energy storage applications. (C) 2017 Elsevier B.V. All rights reserved.
SubtypeArticle
KeywordGraphene Nanosheets Carbon Dots Supercapacitor
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
Funding OrganizationNational Natural Science Foundation of China(21307138 ; 51372247) ; National Natural Science Foundation of China(21307138 ; 51372247)
DOI10.1016/j.jallcom.2017.08.229
WOS KeywordSOLID-STATE SUPERCAPACITORS ; CARBON SPHERES ; GRAPHENE ; PERFORMANCE ; NANOPARTICLES ; FILMS ; FLUORESCENCE ; HYDROGELS ; NITROGEN ; DOTS
Indexed BySCI
Language英语
Funding OrganizationNational Natural Science Foundation of China(21307138 ; 51372247) ; National Natural Science Foundation of China(21307138 ; 51372247)
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000412712900117
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/33796
Collection中科院固体物理研究所
Affiliation1.Chinese Acad Sci, Inst Solid State Phys, CAS Ctr Excellence Nanosci, Key Lab Mat Phys, Hefei 230031, Anhui, Peoples R China
2.Chinese Acad Sci, Inst Solid State Phys, Anhui Key Lab Nanomat & Nanotechnol, Hefei 230031, Anhui, Peoples R China
Recommended Citation
GB/T 7714
Wang, Meiling,Han, Fangming. Self-assembled 3D hierarchical nanostructure of reduced GO nanosheets intercalated with CDs for high-rate supercapacitor electrodes[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2017,727(无):991-997.
APA Wang, Meiling,&Han, Fangming.(2017).Self-assembled 3D hierarchical nanostructure of reduced GO nanosheets intercalated with CDs for high-rate supercapacitor electrodes.JOURNAL OF ALLOYS AND COMPOUNDS,727(无),991-997.
MLA Wang, Meiling,et al."Self-assembled 3D hierarchical nanostructure of reduced GO nanosheets intercalated with CDs for high-rate supercapacitor electrodes".JOURNAL OF ALLOYS AND COMPOUNDS 727.无(2017):991-997.
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