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Synthesis and electrochemical properties of a new vanadyl phosphate: Li<inf>4</inf>VO(PO<inf>4</inf>)<inf>2</inf>
Date Issued
01-10-2006
Author(s)
Kishore, M. Satya
Pralong, V.
Caignaert, V.
Indian Institute of Technology, Madras
Raveau, B.
Abstract
The exchange of lithium for proton in VO(H2PO4)2 has been studied. Beside the continuous exchange from VO(H2PO4)2 to Li2H2VO(PO4)2, a new cathode material Li4VO(PO4)2 has been synthesized, whose structure is closely related to that of VO(H2PO4)2. The electrochemical evaluation of Li4VO(PO4)2 vs. Li shows that it undergoes reversible lithium deintercalation/intercalation at high voltage, ∼4.0 V with a reversible capacity of ∼70 mAh/g. © 2006 Elsevier B.V. All rights reserved.
Volume
8