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Title: Can Vanadium Be Substituted into LiFePO[subscript 4]?

Abstract

Vanadium is shown to substitute for iron in the olivine LiFePO{sub 4} up to at least 10 mol %, when the synthesis is carried out at 550 C. In the solid solution LiFe{sub 1-3y/2}V{sub y}PO{sub 4}, the a and b lattice parameters and cell volume decrease with increasing vanadium content, while the c lattice parameter increases slightly. However, when the synthesis is performed at 650 C, a NASICON phase, Li{sub 3}V{sub 2}(PO{sub 4}){sub 3}, is also formed, showing that solid solution is a function of the synthesis temperature. X-ray absorption near-edge structure indicates vanadium is in the 3+ oxidation state and in an octahedral environment. Magnetic studies reveal a shift of the antiferromagnetic ordering transition toward lower temperatures with increasing vanadium substitution, confirming solid solution formation. The addition of vanadium enhances the electrochemical performance of the materials especially at high current densities.

Authors:
; ; ; ; ; ;  [1]
  1. Binghamton
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
DOE - BASIC ENERGY SCIENCES
OSTI Identifier:
1029006
Resource Type:
Journal Article
Journal Name:
Chem. Mater.
Additional Journal Information:
Journal Volume: 23; Journal Issue: (21) ; 11, 2011; Journal ID: ISSN 0897-4756
Country of Publication:
United States
Language:
ENGLISH

Citation Formats

Omenya, Fredrick, Chernova, Natasha A., Upreti, Shailesh, Zavalij, Peter Y., Nam, Kyung-Wan, Yang, Xiao-Qing, Whittingham, M. Stanley, BNL), and Maryland). Can Vanadium Be Substituted into LiFePO[subscript 4]?. United States: N. p., 2015. Web. doi:10.1021/cm2017032.
Omenya, Fredrick, Chernova, Natasha A., Upreti, Shailesh, Zavalij, Peter Y., Nam, Kyung-Wan, Yang, Xiao-Qing, Whittingham, M. Stanley, BNL), & Maryland). Can Vanadium Be Substituted into LiFePO[subscript 4]?. United States. https://doi.org/10.1021/cm2017032
Omenya, Fredrick, Chernova, Natasha A., Upreti, Shailesh, Zavalij, Peter Y., Nam, Kyung-Wan, Yang, Xiao-Qing, Whittingham, M. Stanley, BNL), and Maryland). 2015. "Can Vanadium Be Substituted into LiFePO[subscript 4]?". United States. https://doi.org/10.1021/cm2017032.
@article{osti_1029006,
title = {Can Vanadium Be Substituted into LiFePO[subscript 4]?},
author = {Omenya, Fredrick and Chernova, Natasha A. and Upreti, Shailesh and Zavalij, Peter Y. and Nam, Kyung-Wan and Yang, Xiao-Qing and Whittingham, M. Stanley and BNL) and Maryland)},
abstractNote = {Vanadium is shown to substitute for iron in the olivine LiFePO{sub 4} up to at least 10 mol %, when the synthesis is carried out at 550 C. In the solid solution LiFe{sub 1-3y/2}V{sub y}PO{sub 4}, the a and b lattice parameters and cell volume decrease with increasing vanadium content, while the c lattice parameter increases slightly. However, when the synthesis is performed at 650 C, a NASICON phase, Li{sub 3}V{sub 2}(PO{sub 4}){sub 3}, is also formed, showing that solid solution is a function of the synthesis temperature. X-ray absorption near-edge structure indicates vanadium is in the 3+ oxidation state and in an octahedral environment. Magnetic studies reveal a shift of the antiferromagnetic ordering transition toward lower temperatures with increasing vanadium substitution, confirming solid solution formation. The addition of vanadium enhances the electrochemical performance of the materials especially at high current densities.},
doi = {10.1021/cm2017032},
url = {https://www.osti.gov/biblio/1029006}, journal = {Chem. Mater.},
issn = {0897-4756},
number = (21) ; 11, 2011,
volume = 23,
place = {United States},
year = {Thu Oct 15 00:00:00 EDT 2015},
month = {Thu Oct 15 00:00:00 EDT 2015}
}