Membrane based In-situ reduction of graphene oxide for electrochemical supercapacitor application
Lin, Tongxi (University of New South Wales Sydney)
Ren, Xiaojun (University of New South Wales Sydney)
Wen, Xinyue (University of New South Wales Sydney)
Karton, Amir (University of New England)
Quintano, Vanesa (Institut Català de Nanociència i Nanotecnologia)
Joshi, Rakesh (University of New South Wales Sydney)

Data:	2024
Resum:	Reduced graphene oxide (rGO) is a widely studied electrode material for energy storage, however, its strong re-stacking tendency during chemical reduction always leads to a degraded specific surface area and thus limits its performance. Therefore, it is necessary to control the morphology of rGO during the reduction process. Here, we develop a novel in-situ membrane-based method for the reduction of graphene oxide (GO) using a green and efficient vitamin C (VC) aqueous solution as reductant. The obtained electrode material (vitamin C reduced GO via membrane-based method, VG-M) exhibits a specific capacitance of 174 F/g at 1 A/g and 75. 9% of retention at 40 A/g, which is about 9 times better than the highly self-stacked material from conventional methods (vitamin C reduced GO via stirring method, VG-S). This designed method successfully achieves the maintenance of rGO sheet morphology through laminar confinement in GO membrane and presents a simple approach towards two-dimensional (2D) material morphology control.
Ajuts:	European Commission 101066462
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Reduced graphene oxide ; Vitamin C ; Supercapacitor
Publicat a:	Carbon, Vol. 224 (April 2024) , art. 119053, ISSN 0008-6223

DOI: 10.1016/j.carbon.2024.119053

9 p, 4.5 MB

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