Cobalt-Free Layered LiNi0.8Mn0.15Al0.05O2/Graphene Aerogel Composite Electrode for Next-Generation Li-Ion Batteries

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dc.authoridSingil, Mustafa Mahmut/0000-0002-7666-8918en_US
dc.authoridguler, aslıhan/0000-0002-5155-2214en_US
dc.authoridAKBULUT, Hatem/0000-0002-6299-136Xen_US
dc.authoridkuruahmet, deniz/0000-0002-4749-682Xen_US
dc.authorscopusid57442986900en_US
dc.authorscopusid57034927900en_US
dc.authorscopusid58157415500en_US
dc.authorscopusid57201131288en_US
dc.authorscopusid57203584519en_US
dc.authorscopusid58157073100en_US
dc.authorscopusid57201131686en_US
dc.authorwosidUZUN, ESMA/KMC-8801-2024en_US
dc.authorwosidSingil, Mustafa Mahmut/HTM-0086-2023en_US
dc.authorwosidAKBULUT, Hatem/AAQ-4909-2020en_US
dc.authorwosidguler, aslıhan/GZG-4499-2022en_US
dc.contributor.authorKuruahmet, Deniz
dc.contributor.authorGuler, Aslihan
dc.contributor.authorYildirim, Sidika
dc.contributor.authorSingil, Mustafa Mahmut
dc.contributor.authorGungor, Hatice
dc.contributor.authorUzun, Esma
dc.contributor.authorAlkan, Engin
dc.date.accessioned2024-08-23T16:04:30Z
dc.date.available2024-08-23T16:04:30Z
dc.date.issued2023en_US
dc.departmentDüzce Üniversitesien_US
dc.description.abstractIn this work, we introduce LiNi0.8Mn0.15Al0.05O2 (NMA), which is cobalt-free and has a high nickel content, and a conductive composite material to NMA by supporting it with a three-dimensional (3D) graphene aerogel (GA). With an easy freeze-drying approach, NMA nanoparticles are properly dispersed on graphene sheets, and GA creates a strong and conductive framework, significantly improving the structure and conductivity. The structure of the pure NMA and NMA/ graphene aerogel (NMA/GA) composite was investigated by X-ray diffraction (XRD) and field emission scanning electron microscopy (FE -SEM). XRD and FE-SEM analyses clearly indicated that ultrapure NMA structures are homogeneously dispersed among the GAs. In addition, the composite structure was examined using transmission electron microscopy (TEM) to determine the dispersion mechanisms. The electrochemical cycling performance of the pure NMA and NMA/GA composite was evaluated by rate capacitance, cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS). The synthesized NMA/GA was able to provide 89.81% specific capacity retention after the 500th cycle at C/2. The average charge/ discharge rates of the obtained cathode show good electrochemical results and exhibit capacities of 190.2,186.3, 185.2, 176.2, 161.2,142.6, and 188.5 mAh g-1 at C/20, C/10, C/5, C, 3C, 5C, and C/20, respectively. EIS data showed an improvement in the impedance of the composite containing GA. According to the results of the electrochemical tests, NMA nanoparticles formed a conductive network with its porous structure thanks to GA, formed a protective layer on the surface, prevented the side reactions between the cathode and the electrolyte, decreased the impedance of the cathode, and increased the redox kinetics. In addition, the changes in the structure were investigated in the NMA/GA composite cathode by XRD, FE-SEM, and Raman analyses at the end of the 50th, 250th, and 500th cycles. In summary, the NMA/GA cathode is expected to play an important role in lithium-ion batteries (LIBs) by taking advantage of its easy synthesis and excellent cycle stability.en_US
dc.description.sponsorshipCouncil of Higher Education in Energy Storage [100/2000]; TUBITAK [2211-A]en_US
dc.description.sponsorshipAuthor Deniz Kuruahmet is a Council of Higher Education 100/2000 in Energy Storage and TUBITAK 2211-A General Domestic PhD Scholar.en_US
dc.identifier.doi10.1021/acsomega.2c08281
dc.identifier.endpage15140en_US
dc.identifier.issn2470-1343
dc.identifier.issue17en_US
dc.identifier.pmid37151515en_US
dc.identifier.scopus2-s2.0-85154030617en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage15124en_US
dc.identifier.urihttps://doi.org/10.1021/acsomega.2c08281
dc.identifier.urihttps://hdl.handle.net/20.500.12684/14240
dc.identifier.volume8en_US
dc.identifier.wosWOS:000974401900001en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherAmer Chemical Socen_US
dc.relation.ispartofAcs Omegaen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectLithium Insertion Materialen_US
dc.subjectRich Cathode Materialsen_US
dc.subjectHigh-Energy Densityen_US
dc.subjectThermal-Stabilityen_US
dc.subjectLini0.8co0.15al0.05o2 Cathodeen_US
dc.subjectElectrochemical Performanceen_US
dc.subjectOxide Cathodesen_US
dc.subjectGrapheneen_US
dc.subjectNien_US
dc.subjectOptimizationen_US
dc.titleCobalt-Free Layered LiNi0.8Mn0.15Al0.05O2/Graphene Aerogel Composite Electrode for Next-Generation Li-Ion Batteriesen_US
dc.typeArticleen_US

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