dc.contributor.authorAmaresh, Samuthirapandian
dc.contributor.authorKim, G. J.
dc.contributor.authorKarthikeyan, K.
dc.contributor.authorAravindan, Vanchiappan
dc.contributor.authorChung, K. Y.
dc.contributor.authorCho, B. W.
dc.contributor.authorLee, Y. S.
dc.identifier.citationAmaresh, S., Kim, G. J., Karthikeyan, K., Aravindan, V., Chung, K. Y., Cho, B. W., et al. (2012). Synthesis and enhanced electrochemical performance of Li2CoPO4F cathodes under high current cycling. Physical Chemistry Chemical Physics, 14(34), 11904-11909.en_US
dc.description.abstractLithium cobalt fluorophosphate, Li2CoPO4F, is successfully synthesized by a solid state reaction under Ar flow at 700 °C. X-ray diffraction and scanning electron microscopic studies are utilized to analyze the structural and morphological features of the synthesized materials, respectively. The presence of fluorine is also supported by energy-dispersive X-ray spectroscopy. The electrochemical properties are evaluated by means of Li/Li2CoPO4F half-cell configurations in both potentiostatic and galvanostatic modes. The Li/Li2CoPO4F cell delivers an initial discharge capacity of 132 mA h g−1 at a current density of 0.1 mA cm−2 between 2.0 and 5.1 V at room temperature. Due to the higher operating potential of the Co2+/3+ couple in the fluorophosphate matrix, this cell shows a capacity retention of only 53% after 20 cycles, still the material delivered 108 mA h g−1 at a high current rate of 1 C. Cyclic voltammetric studies corroborate the insertion and extraction of Li+ ions by a single phase reaction mechanism during cycling.en_US
dc.relation.ispartofseriesPhysical chemistry chemical physicsen_US
dc.rights© 2012 The Owner Societies.en_US
dc.titleSynthesis and enhanced electrochemical performance of Li2CoPO4F cathodes under high current cyclingen_US
dc.typeJournal Article
dc.contributor.researchEnergy Research Instituteen_US

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