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Electrochemical Properties of Pristine and Vanadium Doped LiFePO4 Nanocrystallized Glasses

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dc.abstract.en<jats:p>In our recent papers, it was shown that the thermal nanocrystallization of glassy analogs of selected cathode materials led to a substantial increase in electrical conductivity. The advantage of this technique is the lack of carbon additive during synthesis. In this paper, the electrochemical performance of nanocrystalline LiFePO4 (LFP) and LiFe0.88V0.08PO4 (LFVP) cathode materials was studied and compared with commercially purchased high-performance LiFePO4 (C-LFP). The structure of the nanocrystalline materials was confirmed using X-ray diffractometry. The laboratory cells were tested at a wide variety of loads ranging from 0.1 to 3 C-rate. Their performance is discussed with reference to their microstructure and electrical conductivity. LFP exhibited a modest electrochemical performance, while the gravimetric capacity of LFVP reached ca. 100 mAh/g. This value is lower than the theoretical capacity, probably due to the residual glassy matrix in which the nanocrystallites are embedded, and thus does not play a significant role in the electrochemistry of the material. The relative capacity fade at high loads was, however, comparable to that of the commercially purchased high-performance LFP. Further optimization of the crystallites-to-matrix ratio could possibly result in further improvement of the electrochemical performance of nanocrystallized LFVP glasses.</jats:p>
dc.affiliationUniwersytet Warszawski
dc.contributor.authorWasiucionek, Marek
dc.contributor.authorGarbarczyk, Jerzy
dc.contributor.authorFrąckiewicz, Justyna E.
dc.contributor.authorBoczar, Maciej
dc.contributor.authorPietrzak, Tomasz
dc.contributor.authorCzerwiński, Andrzej
dc.contributor.authorBuchberger, Dominika
dc.date.accessioned2024-01-24T22:33:23Z
dc.date.available2024-01-24T22:33:23Z
dc.date.copyright2021-12-01
dc.date.issued2021
dc.description.accesstimeAT_PUBLICATION
dc.description.financePublikacja bezkosztowa
dc.description.number23
dc.description.versionFINAL_PUBLISHED
dc.description.volume14
dc.identifier.doi10.3390/EN14238042
dc.identifier.issn1996-1073
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/105988
dc.languageeng
dc.pbn.affiliationchemical sciences
dc.relation.ispartofEnergies
dc.relation.pages8042
dc.rightsCC-BY
dc.sciencecloudnosend
dc.titleElectrochemical Properties of Pristine and Vanadium Doped LiFePO4 Nanocrystallized Glasses
dc.typeJournalArticle
dspace.entity.typePublication