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Hybridization of MOFs and graphene: A new strategy for the synthesis of porous 3D carbon composites for high performing supercapacitors

A novel porous 3D-structured carbon composite material with a unique architecture by combining graphene and carbonized metal-organic framework (C-MOF) (HKUST-1) microrods for high performing supercapacitors has been synthesised and characterised. The HKUST-1 microrods were prepared by a new method,...

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Published in:Electrochimica acta 2020-01, Vol.329, p.135104, Article 135104
Main Authors: Van Ngo, Truc, Moussa, Mahmoud, Tung, Tran Thanh, Coghlan, Campbell, Losic, Dusan
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cited_by cdi_FETCH-LOGICAL-c380t-78f5f1fe32e9f8cd0aebcfc2cb47cb5c8388b0ba32ed29e4d04028cf210325e63
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container_title Electrochimica acta
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creator Van Ngo, Truc
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description A novel porous 3D-structured carbon composite material with a unique architecture by combining graphene and carbonized metal-organic framework (C-MOF) (HKUST-1) microrods for high performing supercapacitors has been synthesised and characterised. The HKUST-1 microrods were prepared by a new method, converting their diamond-like shape into microrods via mechanical shear mixing in an aqueous solution. Grinding of HKUST-1 and graphene oxide (GO) resulted in the formation of a 3D GO-MOF composite with intercalated HKUST-1 microrods between GO sheets. The composite film was treated by a laser scribing method and created a highly porous, a high surface area (>600 m2/g) and conductive 3D nanostructured composite film (L-rGO-C-MOF) used as electrodes for supercapacitor applications. The prepared film showed a high capacitance of 390 F/g at 5 mV/s, and a cyclic stability of 97.8% at 10 A/g after 5000 cycles. The symmetrical supercapacitor delivered an excellent power density of 8037.5 W/kg with an outstanding energy density of 22.3 Wh/kg confirming a new pathway to design new 3D porous graphene-MOF composites for high-performance energy storage devices.
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source ScienceDirect Journals
subjects 3D porous graphene
Aqueous solutions
Composite materials
Diamonds
Energy storage
Flux density
Graphene
Graphene composites
Laser scribing
Metal-organic frameworks
MOFs
Porous materials
Supercapacitor
Supercapacitors
Three dimensional composites
title Hybridization of MOFs and graphene: A new strategy for the synthesis of porous 3D carbon composites for high performing supercapacitors
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