Reversible Li insertion studies on V4O3(PO4)3 as high energy storage material for Li-Ion battery applications

M. Satyanarayana; R. S. Rao; V. Pralong; U. V. Varadaraju

doi:10.1149/2.0311701jes

Reversible Li insertion studies on V₄O₃(PO₄)₃ as high energy storage material for Li-Ion battery applications

M. Satyanarayana, R. S. Rao, V. Pralong, U. V. Varadaraju

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

Li-insertion studies were performed on V₄O₃(PO₄)₃ that belongs to the libscombite/lazulite family. Availability of multiple oxidation states and vacancies in crystal structure allows for the insertion of more than 7 lithium ions per formula unit. We will show that in the voltage window of 1-4 V vs. Li⁺/Li, 6.0 Li-ions could be inserted leading to a reversible capacity of 195 mAh/g at a C/5 rate. A structural transformation is observed from ex-situ XRD patterns after the insertion of 2 lithium at 2.4 V vs. Li⁺/Li, consistent with the available crystallographic sites in the structure. Interestingly we show that from this phase Li₂V₄O₃(PO₄)₃, further lithium insertion lead to an amorphous material but the structure is completely recovered on charge.

Original language	English
Pages (from-to)	A6201-A6205
Journal	Journal of the Electrochemical Society
Volume	164
Issue number	1
DOIs	https://doi.org/10.1149/2.0311701jes
State	Published - 2017
Externally published	Yes

Bibliographical note

Publisher Copyright:
© The Author(s) 2016. Published by ECS.

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10.1149/2.0311701jes

Cite this

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abstract = "Li-insertion studies were performed on V4O3(PO4)3 that belongs to the libscombite/lazulite family. Availability of multiple oxidation states and vacancies in crystal structure allows for the insertion of more than 7 lithium ions per formula unit. We will show that in the voltage window of 1-4 V vs. Li+/Li, 6.0 Li-ions could be inserted leading to a reversible capacity of 195 mAh/g at a C/5 rate. A structural transformation is observed from ex-situ XRD patterns after the insertion of 2 lithium at 2.4 V vs. Li+/Li, consistent with the available crystallographic sites in the structure. Interestingly we show that from this phase Li2V4O3(PO4)3, further lithium insertion lead to an amorphous material but the structure is completely recovered on charge.",

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