Effect of doping amount on capacity retention and electrolyte decomposition of LiNi0. 5Mn1. 5O4-based cathode at high temperature

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dc.authorid0000-0003-0670-5987
dc.authorscopusid15840195400
dc.authorwosidGDX-1262-2022
dc.contributor.authorKoçak, Tayfun
dc.contributor.authorWu, Langyuan
dc.contributor.authorUğur, Alper
dc.contributor.authorShen, Laifa
dc.contributor.authorGiorgio, Francesca De
dc.contributor.authorKunduracı, Muharrem
dc.date.accessioned2023-08-10T15:16:59Z
dc.date.available2023-08-10T15:16:59Z
dc.date.issued2022
dc.departmentFakülteler, Havacılık ve Uzay Bilimleri Fakültesi, Havacılık ve Uzay Mühendisliği Bölümü
dc.description.abstractThe long service life of batteries is one of the most desired parameters for the battery industry and end-users. Several doping elements have been proposed to increase discharge capacity, capacity retention, and rate capability of high voltage LiNi0.5Mn1.5O4 (LNMO) cathode. In this study, two different doping elements, i.e., boron (III) and vanadium (IV), are compared to investigate the doping effect on capacity retention of LNMO-electrodes at high temperatures (50 ?) and extended cycle performance. Different doping amounts are investigated for comparison, i.e., 1, 3, 5, 7, 10 wt% for boron and 10 wt% for vanadium. The actual benefit of doping is observed over extended cycle tests (> 1000 cycles) at 50 ? and 1C. While pristine LNMO electrodes fail after 80 cycles, 10% B-doped LNMO exhibits the highest capacity retention, 80% at 50 ? and 1C after 1200 cycles. The operando differential electrochemical mass spectroscopy results reveal that LNMO electrodes show the highest amount of gas emission (H-2 and O-2) at ~ 4.7 V, where the oxidation of Ni4+/3+ and Ni3+/2+ occurs. Since high amount doping strategy increases Mn3+ amount and, consequently, the charge voltage plateau at ~4 V (Mn3+/Mn4+), this implicitly prevents electrolyte decomposition at high voltage due to decreasing of nickel voltage plateau and less charging step duration at ~ 4.7 V. This investigation shows that the cathode life remarkably can be extended by reducing the nickel content with high amount of doping.
dc.identifier.citationTayfun Kocak, Langyuan Wu, Alper Ugur, Laifa Shen, Francesca De Giorgio, Muharrem Kunduraci, Xiaogang Zhang, (2022). Effect of doping amount on capacity retention and electrolyte decomposition of LiNi0.5Mn1.5O4-based cathode at high temperature, Journal of Solid State Chemistry, 310,123006, Erişim Adresi: https://www.sciencedirect.com/science/article/pii/S002245962200130X
dc.identifier.doi10.1016/j.jssc.2022.123006
dc.identifier.endpage10en_US
dc.identifier.issn0022-4596
dc.identifier.issn1095-726X
dc.identifier.issue123006en_US
dc.identifier.scopus2-s2.0-85126551931
dc.identifier.scopusqualityQ1
dc.identifier.startpage1en_US
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S002245962200130X?via%3Dihub
dc.identifier.urihttps://hdl.handle.net/20.500.13099/164
dc.identifier.volume310en_US
dc.identifier.wosWOS:000780270500014
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorKunduracı, Muharrem
dc.language.isoen
dc.publisherAcademic Press
dc.relation.ispartofJournal of Solid State Chemistry
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectHigh voltage spinel
dc.subjectLNMO
dc.subjectBoron doping
dc.subjectVanadium doping
dc.subjectOperando differential electrochemical mass spectroscopy (DEMS)
dc.titleEffect of doping amount on capacity retention and electrolyte decomposition of LiNi0. 5Mn1. 5O4-based cathode at high temperature
dc.typeArticle

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