Covalent Graphene-MOF Hybrids for High-Performance Asymmetric Supercapacitors
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27640%2F21%3A10248941" target="_blank" >RIV/61989100:27640/21:10248941 - isvavai.cz</a>
Alternative codes found
RIV/61989592:15310/20:73602465
Result on the web
<a href="https://onlinelibrary.wiley.com/doi/epdf/10.1002/adma.202004560" target="_blank" >https://onlinelibrary.wiley.com/doi/epdf/10.1002/adma.202004560</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/adma.202004560" target="_blank" >10.1002/adma.202004560</a>
Alternative languages
Result language
angličtina
Original language name
Covalent Graphene-MOF Hybrids for High-Performance Asymmetric Supercapacitors
Original language description
In this work, the covalent attachment of an amine functionalized metal-organic framework (UiO-66-NH2 = Zr6O4(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 GA@UiO-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 p-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 Ti3C2TX 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.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10300 - Physical sciences
Result continuities
Project
<a href="/en/project/GX19-27454X" target="_blank" >GX19-27454X: Control of electronic properties of metal-containing molecules through their noncovalent interactions with solvents, ligands and 2D nanosystems</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Advanced Materials
ISSN
0935-9648
e-ISSN
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Volume of the periodical
33
Issue of the periodical within the volume
4
Country of publishing house
DE - GERMANY
Number of pages
10
Pages from-to
2004560
UT code for WoS article
000596065400001
EID of the result in the Scopus database
2-s2.0-85097208378