Performance Evaluation of Lithium Vanadium Fluorophosphate in Lithium Metal and Lithium-Ion Cells

In this study it is demonstrated that the lithium vanadium fluorophosphate, LiVPO4F phase, offers considerable promise as a viable cathode material for commercial lithium-ion batteries. The active material was synthesized using a reaction scheme based on carbothermal reduction. The LiVPO4F is isostr...

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Published inJournal of the Electrochemical Society Vol. 152; no. 9; pp. A1776 - A1779
Main Authors Barker, J., Gover, R. K. B., Burns, P., Bryan, A., Saidi, M. Y., Swoyer, J. L.
Format Journal Article
LanguageEnglish
Published 2005
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Summary:In this study it is demonstrated that the lithium vanadium fluorophosphate, LiVPO4F phase, offers considerable promise as a viable cathode material for commercial lithium-ion batteries. The active material was synthesized using a reaction scheme based on carbothermal reduction. The LiVPO4F is isostructural with the known mineral ambygonite, LiAlPO4F, crystallizing with a triclinic structure (space group, Py). Performance evaluation of graphite//LiVPO4F lithium-ion cells indicates a reversible material utilization for the LiVPO4F of around 130 mAh/g and an average discharge voltage of 4.06 V. Long-term cycling (C/5 rate at 23DGC) of this lithium-ion configuration predicts a cycle life > 500 cycles to around 90% of the original discharge capacity.
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ISSN:0013-4651
DOI:10.1149/1.1990068