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Aloe vera extract-assisted sol-gel synthesis of NiOx nanopyramids for supercapacitor application

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dc.citedby4
dc.contributor.authorSelvanathan V.en_US
dc.contributor.authorIslam M.A.en_US
dc.contributor.authorKiong T.S.en_US
dc.contributor.authorRazali S.A.en_US
dc.contributor.authorAlharbi H.F.en_US
dc.contributor.authorAkhtaruzzaman M.en_US
dc.contributor.authorid57160057200en_US
dc.contributor.authorid57361246600en_US
dc.contributor.authorid57216824752en_US
dc.contributor.authorid57225826234en_US
dc.contributor.authorid57188221000en_US
dc.contributor.authorid57195441001en_US
dc.date.accessioned2025-03-03T07:44:07Z
dc.date.available2025-03-03T07:44:07Z
dc.date.issued2024
dc.description.abstractGreen synthesis of metal oxide nanoparticles is a cost-effective and sustainable approach that allows tailoring of the size and shape of the nanostructures for versatile applications. In this study, aloe vera extract-assisted sol-gel synthesis of nickel oxide nanoparticles (NiOx NPs) was explored for supercapacitor application. The NiOx NPs were synthesized at different aloe vera concentrations (2.5 and 5 wt%) and calcination temperatures (300, 400 and 500 �C). The phytochemical-assisted synthesis yielded NiOx nanopyramids with pores on their surface which widens as calcination temperature increases. As confirmed by XRD analysis, NiOx crystallite size also increased at higher calcination temperatures. Upon electrochemical characterization, NiOx-400B which was synthesized with 5 wt% aloe vera extract at 400 �C recorded the highest specific capacitance of 721 F g?1 at 1 A g-1 current density with the energy and power density of 10.38 Whkg?1 and 241.08 W kg-1 respectively. The charge storage mechanisms in the samples were gauged using Dunn's method which revealed that NiOx synthesized at higher calcination temperatures exhibited a greater contribution of the diffusion-controlled process. The optimized composition, NiOx-400B, also demonstrated excellent cycle stability by retaining up to 90.4 % of its original capacitance over 1500 cycles. This work is an attempt to investigate the viability of green synthesized nanoparticles in energy storage applications and the novel NiOx nanopyramid substantiates its prospect as a good electrode material for supercapacitors. ? 2024 Elsevier Ltd and Techna Group S.r.l.en_US
dc.description.natureFinalen_US
dc.identifier.doi10.1016/j.ceramint.2023.12.400
dc.identifier.epage10853
dc.identifier.issue7
dc.identifier.scopus2-s2.0-85182346106
dc.identifier.spage10843
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85182346106&doi=10.1016%2fj.ceramint.2023.12.400&partnerID=40&md5=2b07fbcf225d4a3eadef44c03d4fac13
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/36715
dc.identifier.volume50
dc.pagecount10
dc.publisherElsevier Ltden_US
dc.sourceScopus
dc.sourcetitleCeramics International
dc.subjectCalcination
dc.subjectCapacitance
dc.subjectCost effectiveness
dc.subjectCrystallite size
dc.subjectEnergy storage
dc.subjectMetal nanoparticles
dc.subjectNickel oxide
dc.subjectSol-gel process
dc.subjectSol-gels
dc.subjectStorage (materials)
dc.subjectSynthesis (chemical)
dc.subjectAloe vera
dc.subjectCalcination temperature
dc.subjectCharge storage
dc.subjectEnergy
dc.subjectGreen synthesis
dc.subjectNanopyramids
dc.subjectNickel oxide nanoparticle
dc.subjectSol - Gel synthesis
dc.subjectSupercapacitor application
dc.subjectSynthesised
dc.subjectSupercapacitor
dc.titleAloe vera extract-assisted sol-gel synthesis of NiOx nanopyramids for supercapacitor applicationen_US
dc.typeArticleen_US
dspace.entity.typePublication
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