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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202004560
|2 doi
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|a pubmed24n1566.xml
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|a (DE-627)NLM318408112
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|a (NLM)33274794
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Jayaramulu, Kolleboyina
|e verfasserin
|4 aut
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| 245 |
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|a Covalent Graphene-MOF Hybrids for High-Performance Asymmetric Supercapacitors
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|c 2021
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 13.10.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2020 The Authors. Advanced Materials published by Wiley-VCH GmbH.
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|a In this work, the covalent attachment of an amine functionalized metal-organic framework (UiO-66-NH2 = Zr6 O4 (OH)4 (bdc-NH2 )6 ; bdc-NH2 = 2-amino-1,4-benzenedicarboxylate) (UiO-Universitetet i Oslo) to the basal-plane of carboxylate functionalized graphene (graphene acid = GA) via amide bonds is reported. The resultant GAUiO-66-NH2 hybrid displayed a large specific surface area, hierarchical pores and an interconnected conductive network. The electrochemical characterizations demonstrated that the hybrid GA@UiO-66-NH2 acts as an effective charge storing material with a capacitance of up to 651 F g-1 , significantly higher than traditional graphene-based materials. The results suggest that the amide linkage plays a key role in the formation of a π-conjugated structure, which facilitates charge transfer and consequently offers good capacitance and cycling stability. Furthermore, to realize the practical feasibility, an asymmetric supercapacitor using a GA@UiO-66-NH2 positive electrode with Ti3 C2 TX MXene as the opposing electrode has been constructed. The cell is able to deliver a power density of up to 16 kW kg-1 and an energy density of up to 73 Wh kg-1 , which are comparable to several commercial devices such as Pb-acid and Ni/MH batteries. Under an intermediate level of loading, the device retained 88% of its initial capacitance after 10 000 cycles
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|a Journal Article
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|a 2D materials
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|a MXenes
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|a asymmetric supercapacitors
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|a covalent assemblies
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|a metal-organic frameworks
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|a Horn, Michael
|e verfasserin
|4 aut
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|a Schneemann, Andreas
|e verfasserin
|4 aut
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|a Saini, Haneesh
|e verfasserin
|4 aut
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|a Bakandritsos, Aristides
|e verfasserin
|4 aut
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|a Ranc, Vaclav
|e verfasserin
|4 aut
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|a Petr, Martin
|e verfasserin
|4 aut
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|a Stavila, Vitalie
|e verfasserin
|4 aut
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|a Narayana, Chandrabhas
|e verfasserin
|4 aut
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|a Scheibe, Błażej
|e verfasserin
|4 aut
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|a Kment, Štěpán
|e verfasserin
|4 aut
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|a Otyepka, Michal
|e verfasserin
|4 aut
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|a Motta, Nunzio
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|4 aut
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|a Dubal, Deepak
|e verfasserin
|4 aut
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|a Zbořil, Radek
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|a Fischer, Roland A
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 33(2021), 4 vom: 25. Jan., Seite e2004560
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:33
|g year:2021
|g number:4
|g day:25
|g month:01
|g pages:e2004560
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|u http://dx.doi.org/10.1002/adma.202004560
|3 Volltext
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|d 33
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|c 01
|h e2004560
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