Facile interface engineering of highly stable covalently functionalized graphene oxide-nickel based metal organic framework heterostructures for supercapacitor applications

This study presents the synthesis, characterization and electrochemical studies of the covalently connected 2D/2D heterostructures of nickel-based metal-organic framework (Ni-MOF)/graphene oxide (GO) hybrids. The covalent linkage in GO plays a vital role in the growth of Ni-MOF onto the functionaliz...

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Bibliographic Details
Published in:Electrochimica acta 2024-12, Vol.507, p.145158, Article 145158
Main Authors: Biji, Christy Ann, Janardhanan, Jith C., John, Honey
Format: Article
Language:English
Subjects:
Covalent functionalization
Energy storage
Metal-organic frameworks
Supercapacitor
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Summary:This study presents the synthesis, characterization and electrochemical studies of the covalently connected 2D/2D heterostructures of nickel-based metal-organic framework (Ni-MOF)/graphene oxide (GO) hybrids. The covalent linkage in GO plays a vital role in the growth of Ni-MOF onto the functionalized GO and these hybrids (NG) show fascinating structural properties. An appreciable reduction of GO is observed in NG hybrids with an increase in Ni-MOF concentration. The NG hybrids display exceptional structural stability with a maximum of 96 % capacitance retention even after 10,000 cycles and augmented electrochemical performance (151.8 F g-1 at a current density of 0.5 A g-1). [Display omitted]
ISSN:0013-4686
DOI:10.1016/j.electacta.2024.145158