Spherical and core–shell-structured LiMn1.5Ni0.5O4 lithium-ion battery cathode with enhanced cyclability

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dc.authorid0000-0003-0670-5987
dc.authorscopusid15840195400
dc.authorwosidGDX-1262-2022
dc.contributor.authorKunduracı, Muharrem
dc.contributor.authorÇağlayan, Uğur
dc.date.accessioned2023-07-03T11:07:15Z
dc.date.available2023-07-03T11:07:15Z
dc.date.issued2022
dc.departmentFakülteler, Havacılık ve Uzay Bilimleri Fakültesi, Havacılık ve Uzay Mühendisliği Bölümü
dc.description.abstractSpherical LiMn1.5Ni0.5O4(LMN) spinel materials with Co or Al doping were synthesized using coprecipitation technique and the dopants’ impacts on cathode performance were explored. While both dopants were conducive to the capacity retention of LMN spinel, aluminum was more efective. Cobalt doping also helped increase the discharge capacity of control spinel, unlike aluminum. Core–shell-structured materials with Co-doped core and Al-doped shell segments were synthesized with the aim to create synergy between two dopants. Indeed, the best cathode performance in terms of lithium capacity and cyclability was reached with core–shell material. The best cathode material denoted as CS 3-1 had a frst cycle lithium capacity of 133.1 mAh g?1 and exhibited capacity fade rate of 0.08% per cycle. X-ray difraction and FTIR studies revealed that all cathode materials were single phase and spinel type with Fd3m space group. Focused-ion beam (FIB) and Scanning Electron Microscope photos showed that spinel materials were made of distinct spherical particles 3–4 µm in diameter. The core–shell structure was also substantiated with the photos. Energy dispersive analysis confrmed that constituent elements Mn, Ni, Co and Al had a homogeneous distribution within spherical particles. Electrochemical impedance spectroscopy results showed that Al doping on the surface was benefcial to reducing impedance growth, thereby explaining the better cyclability and rate performance of these cathodes.
dc.identifier.citationKunduraci, M., Çağlayan, U. (2022). Spherical and core–shell-structured LiMn1.5Ni0.5O4 lithium-ion battery cathode with enhanced cyclability. J Appl Electrochem 52, 477–486.
dc.identifier.doi10.1007/s10800-021-01653-y
dc.identifier.endpage486en_US
dc.identifier.issn1572-8838
dc.identifier.issue3en_US
dc.identifier.scopus2-s2.0-85122304998
dc.identifier.startpage477en_US
dc.identifier.urihttps://hdl.handle.net/20.500.13099/132
dc.identifier.volume52en_US
dc.identifier.wosWOS:000739308200001
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.institutionauthorKunduracı, Muharrem
dc.language.isoen
dc.publisherSpringer
dc.relation.ispartofJournal of Applied Electrochemistry
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectBattery
dc.subjectSpinel
dc.subjectCoprecipitation
dc.subjectCore
dc.subjectShell
dc.titleSpherical and core–shell-structured LiMn1.5Ni0.5O4 lithium-ion battery cathode with enhanced cyclability
dc.typeArticle

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