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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
发表期刊JOURNAL OF ALLOYS AND COMPOUNDS
卷号727期号:页码:991-997
摘要A 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.
文章类型Article
关键词Graphene Nanosheets Carbon Dots Supercapacitor
WOS标题词Science & Technology ; Physical Sciences ; Technology
资助者National Natural Science Foundation of China(21307138 ; 51372247) ; National Natural Science Foundation of China(21307138 ; 51372247)
DOI10.1016/j.jallcom.2017.08.229
关键词[WOS]SOLID-STATE SUPERCAPACITORS ; CARBON SPHERES ; GRAPHENE ; PERFORMANCE ; NANOPARTICLES ; FILMS ; FLUORESCENCE ; HYDROGELS ; NITROGEN ; DOTS
收录类别SCI
语种英语
资助者National Natural Science Foundation of China(21307138 ; 51372247) ; National Natural Science Foundation of China(21307138 ; 51372247)
WOS研究方向Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号WOS:000412712900117
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.hfcas.ac.cn:8080/handle/334002/33796
专题中科院固体物理研究所
作者单位1.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
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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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