Real Time Tracking of Nanoconfined Water-Assisted Ion Transfer in Functionalized Graphene Derivatives Supercapacitor Electrodes

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dc.contributor.authorKandambath Padinjareveetil, Akshay Kumarcs
dc.contributor.authorPykal, Martincs
dc.contributor.authorBakandritsos, Aristidescs
dc.contributor.authorZboƙil, Radekcs
dc.contributor.authorOtyepka, Michalcs
dc.contributor.authorPumera, Martincs
dc.coverage.issue39cs
dc.coverage.volume11cs
dc.date.accessioned2025-04-04T11:56:50Z
dc.date.available2025-04-04T11:56:50Z
dc.date.issued2024-10-01cs
dc.description.abstractWater molecules confined in nanoscale spaces of 2D graphene layers have fascinated researchers worldwide for the past several years, especially in the context of energy storage applications. The water molecules exchanged along with ions during the electrochemical process can aid in wetting and stabilizing the layered materials resulting in an anomalous enhancement in the performance of supercapacitor electrodes. Engineering of 2D carbon electrode materials with various functionalities (oxygen (& horbar;O), fluorine (& horbar;F), nitrile (& horbar;C equivalent to N), carboxylic (& horbar;COOH), carbonyl (& horbar;C & boxH;O), nitrogen (& horbar;N)) can alter the ion/water organization in graphene derivatives, and eventually their inherent ion storage ability. Thus, in the current study, a comparative set of functionalized graphene derivatives-fluorine-doped cyanographene (G-F-CN), cyanographene (G-CN), graphene acid (G-COOH), oxidized graphene acid (G-COOH (O)) and nitrogen superdoped graphene (G-N) is systematically evaluated toward charge storage in various aqueous-based electrolyte systems. Differences in functionalization on graphene derivatives influence the electrochemical properties, and the real-time mass exchange during the electrochemical process is monitored by electrochemical quartz crystal microbalance (EQCM). Electrogravimetric assessment revealed that oxidized 2D acid derivatives (G-COOH (O)) are shown to exhibit high ion storage performance along with maximum water transfer during the electrochemical process. The complex understanding of the processes gained during supercapacitor electrode charging in aqueous electrolytes paves the way toward the rational utilization of graphene derivatives in forefront energy storage applications. Covalent functionalization and doping of graphene surfaces -featuring groups such as oxygen, cyano-, carbon-fluorine, carboxyl groups, and nitrogen heteroatoms- significantly affects water-assisted ion transfer as monitored with electrochemical quartz crystal microbalance, modulating the performance of supercapacitor electrodes. Such studies are crucial for advancing energy storage applications with a broader impact across electrochemistry-related technological domains. imageen
dc.formattextcs
dc.format.extent1-18cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationAdvanced Science. 2024, vol. 11, issue 39, p. 1-18.en
dc.identifier.doi10.1002/advs.202307583cs
dc.identifier.issn2198-3844cs
dc.identifier.orcid0000-0001-5846-2951cs
dc.identifier.other189925cs
dc.identifier.researcheridF-2724-2010cs
dc.identifier.urihttps://hdl.handle.net/11012/250790
dc.language.isoencs
dc.publisherWILEYcs
dc.relation.ispartofAdvanced Sciencecs
dc.relation.urihttps://onlinelibrary.wiley.com/doi/10.1002/advs.202307583cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2198-3844/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectconfined water moleculesen
dc.subjectcovalent functionalizationen
dc.subjectenergy storageen
dc.subjectEQCMen
dc.subjectGraphene derivativesen
dc.titleReal Time Tracking of Nanoconfined Water-Assisted Ion Transfer in Functionalized Graphene Derivatives Supercapacitor Electrodesen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-189925en
sync.item.dbtypeVAVen
sync.item.insts2025.04.04 13:56:49en
sync.item.modts2025.04.02 12:32:07en
thesis.grantorVysokĂ© učenĂ­ technickĂ© v Brně. StƙedoevropskĂœ technologickĂœ institut VUT. Energie budoucnosti a inovacecs
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