Predominated capacitive behavior of Ag-doped magnesium vanadate as a novel electrode material for supercapacitors

dc.contributor.authorUmair, Muhammad
dc.contributor.authorShad, Naveed Akhtar
dc.contributor.authorHussain, S.
dc.contributor.authorJilani, Asim
dc.contributor.authorSajid, Muhammad Munir
dc.contributor.authorArshad, Muhammad Imran
dc.contributor.authorHasnain Rana, Hafiz Talha
dc.contributor.authorSharma, Surender Kumar
dc.contributor.authorMishra, Yogendra Kumar
dc.contributor.authorJaved, Yasir
dc.date.accessioned2024-01-21T10:42:55Z
dc.date.accessioned2024-08-13T12:44:59Z
dc.date.available2024-01-21T10:42:55Z
dc.date.available2024-08-13T12:44:59Z
dc.date.issued2023-06-11T00:00:00
dc.description.abstractTransition metal vanadate nanostructures are getting significant importance as an efficient electrode material for modern energy storage applications. In this work, a simple hydrothermal method is employed for the synthesis of magnesium vanadate (MgV2O5) and Ag-doped magnesium vanadate (Ag doped MgV3O8) nanomaterials. The X-ray diffraction (XRD) analysis reveals the formation of an orthorhombic structure for magnesium vanadate, whereas the Ag-doped magnesium vanadate results in a monoclinic structure. Interestingly, the optical bandgap is observed to increase from 2.85 eV to 3.92 eV with the increase in Ag-doping as revealed from Tauc's plot of the UV-visible absorption spectrum. The electrochemical performance of magnesium vanadate electrodes is thoroughly investigated by cyclic voltammetry (CV), Galvanostatic charge-discharge (GCD), and electrochemical impedance spectroscopy. The Ag-doped magnesium vanadate shows higher specific capacitance (Cs = 706 Fg?1) in comparison to undoped (325 Fg?1) at a current density J = 5 Ag?1. The theoretical investigations through Dunn's model demonstrate a major contribution arises from surface-controlled processes, which increase as high as 91% at scan rate of 60 mVsec?1. Our findings indicate that Ag-doping significantly improves the overall electrochemical response of magnesium vanadate as an efficient electrode material for supercapacitor applications. � 2023 Hydrogen Energy Publications LLCen_US
dc.identifier.doi10.1016/j.ijhydene.2023.05.279
dc.identifier.issn3603199
dc.identifier.urihttps://kr.cup.edu.in/handle/32116/3771
dc.identifier.urlhttps://linkinghub.elsevier.com/retrieve/pii/S0360319923026691
dc.language.isoen_USen_US
dc.publisherElsevier Ltden_US
dc.subjectElectrochemical propertiesen_US
dc.subjectSilver doped magnesium vanadateen_US
dc.subjectSurface-controlled processen_US
dc.titlePredominated capacitive behavior of Ag-doped magnesium vanadate as a novel electrode material for supercapacitorsen_US
dc.title.journalInternational Journal of Hydrogen Energyen_US
dc.typeArticleen_US
dc.type.accesstypeClosed Accessen_US

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