Hybridization of MOFs and graphene: a new strategy for the synthesis of porous 3D carbon composites for high performing supercapacitors
Date
2020
Authors
Ngo, T.
Moussa, M.
Tung, T.T.
Coghlan, C.
Losic, D.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Journal article
Citation
Electrochimica Acta, 2020; 329:1-12
Statement of Responsibility
Truc Van Ngo, Mahmoud Moussa, Tran Thanh Tung, Campbell Coghlan, Dusan Losic
Conference Name
Abstract
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.
School/Discipline
Dissertation Note
Provenance
Description
Access Status
Rights
© 2019 Elsevier Ltd. All rights reserved.