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The influence of fluorine doping on the structural and electrical properties of the LiFePO4 powder

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2017
Accepted version (1.029Mb)
Authors
Jugović, Dragana
Mitrić, Miodrag
Milović, Miloš
Cvjetićanin, Nikola
Jokić, Bojan
Umićević, Ana
Uskoković, Dragan
Article (Accepted Version)
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Abstract
Low intrinsic electronic conductivity is the main disadvantage of LiFePO4 when used as a cathode material in lithium ion batteries. The paper offers experimental proofs of the theoretical prediction that fluorine doping of LiFePO4 can enhance its electrical conductivity. The LiFePO4 and fluorine-doped LiFePO4 olivine type, carbon-free powders are synthesized and examined. The crystal structure refinements in the Pnma space group reveal that doping with fluorine ions preserves the olivine structure, while reducing both the lattice parameters and the antisite defect, and increasing the crystallite size. A small amount of incorporated fluorine enhances the electrical conductivity from 4.6×10−7 S cm−1 to 2.3×10−6 S cm−1 and has a positive impact on the electrochemical performance. Several spectroscopy techniques (Mössbauer, FTIR, and Raman) reveal differences between the two powders and additionally support the findings of both the Rietveld refinement and the conductivity measurements.
Keywords:
powders / solid state reaction / spectroscopy / electrical properties / electrodes
Source:
Ceramics International, 2017, 43, 3, 3224-3230
Publisher:
  • Elsevier
Funding / projects:
  • Molecular designing of nanoparticles with controlled morphological and physicochemical characteristics and functional materials based on them (RS-45004)
  • Investigation of intermetallics and semiconductors and possible application in renewable energy sources (RS-171001)
  • Magnetic and radionuclide labeled nanostructured materials for medical applications (RS-45015)
  • Lithium-ion batteries and fuel cells - research and development (RS-45014)
Note:
  • This is the peer-reviewed version of the paperJugović, D., Mitrić, M., Milović, M., Cvjetićanin, N., Jokić, B., Umićević, A., Uskoković, D., 2017. The influence of fluorine doping on the structural and electrical properties of the LiFePO4 powder. Ceramics International 43, 3224–3230. https://doi.org/10.1016/j.ceramint.2016.11.149

DOI: 10.1016/j.ceramint.2016.11.149

ISSN: 0272-8842

WoS: 000392769600045

Scopus: 2-s2.0-85006469947
[ Google Scholar ]
18
12
Handle
https://hdl.handle.net/21.15107/rcub_dais_15433
URI
https://dais.sanu.ac.rs/123456789/15433
Collections
  • ИТН САНУ - Општа колекција / ITS SASA - General collection
Institution/Community
Институт техничких наука САНУ / Institute of Technical Sciences of SASA
TY  - JOUR
AU  - Jugović, Dragana
AU  - Mitrić, Miodrag
AU  - Milović, Miloš
AU  - Cvjetićanin, Nikola
AU  - Jokić, Bojan
AU  - Umićević, Ana
AU  - Uskoković, Dragan
PY  - 2017
UR  - https://dais.sanu.ac.rs/123456789/15433
AB  - Low intrinsic electronic conductivity is the main disadvantage of LiFePO4 when used as a cathode material in lithium ion batteries. The paper offers experimental proofs of the theoretical prediction that fluorine doping of LiFePO4 can enhance its electrical conductivity. The LiFePO4 and fluorine-doped LiFePO4 olivine type, carbon-free powders are synthesized and examined. The crystal structure refinements in the Pnma space group reveal that doping with fluorine ions preserves the olivine structure, while reducing both the lattice parameters and the antisite defect, and increasing the crystallite size. A small amount of incorporated fluorine enhances the electrical conductivity from 4.6×10−7 S cm−1 to 2.3×10−6 S cm−1 and has a positive impact on the electrochemical performance. Several spectroscopy techniques (Mössbauer, FTIR, and Raman) reveal differences between the two powders and additionally support the findings of both the Rietveld refinement and the conductivity measurements.
PB  - Elsevier
T2  - Ceramics International
T1  - The influence of fluorine doping on the structural and electrical properties of the LiFePO4 powder
SP  - 3224
EP  - 3230
VL  - 43
IS  - 3
DO  - 10.1016/j.ceramint.2016.11.149
UR  - https://hdl.handle.net/21.15107/rcub_dais_15433
ER  - 
@article{
author = "Jugović, Dragana and Mitrić, Miodrag and Milović, Miloš and Cvjetićanin, Nikola and Jokić, Bojan and Umićević, Ana and Uskoković, Dragan",
year = "2017",
abstract = "Low intrinsic electronic conductivity is the main disadvantage of LiFePO4 when used as a cathode material in lithium ion batteries. The paper offers experimental proofs of the theoretical prediction that fluorine doping of LiFePO4 can enhance its electrical conductivity. The LiFePO4 and fluorine-doped LiFePO4 olivine type, carbon-free powders are synthesized and examined. The crystal structure refinements in the Pnma space group reveal that doping with fluorine ions preserves the olivine structure, while reducing both the lattice parameters and the antisite defect, and increasing the crystallite size. A small amount of incorporated fluorine enhances the electrical conductivity from 4.6×10−7 S cm−1 to 2.3×10−6 S cm−1 and has a positive impact on the electrochemical performance. Several spectroscopy techniques (Mössbauer, FTIR, and Raman) reveal differences between the two powders and additionally support the findings of both the Rietveld refinement and the conductivity measurements.",
publisher = "Elsevier",
journal = "Ceramics International",
title = "The influence of fluorine doping on the structural and electrical properties of the LiFePO4 powder",
pages = "3224-3230",
volume = "43",
number = "3",
doi = "10.1016/j.ceramint.2016.11.149",
url = "https://hdl.handle.net/21.15107/rcub_dais_15433"
}
Jugović, D., Mitrić, M., Milović, M., Cvjetićanin, N., Jokić, B., Umićević, A.,& Uskoković, D.. (2017). The influence of fluorine doping on the structural and electrical properties of the LiFePO4 powder. in Ceramics International
Elsevier., 43(3), 3224-3230.
https://doi.org/10.1016/j.ceramint.2016.11.149
https://hdl.handle.net/21.15107/rcub_dais_15433
Jugović D, Mitrić M, Milović M, Cvjetićanin N, Jokić B, Umićević A, Uskoković D. The influence of fluorine doping on the structural and electrical properties of the LiFePO4 powder. in Ceramics International. 2017;43(3):3224-3230.
doi:10.1016/j.ceramint.2016.11.149
https://hdl.handle.net/21.15107/rcub_dais_15433 .
Jugović, Dragana, Mitrić, Miodrag, Milović, Miloš, Cvjetićanin, Nikola, Jokić, Bojan, Umićević, Ana, Uskoković, Dragan, "The influence of fluorine doping on the structural and electrical properties of the LiFePO4 powder" in Ceramics International, 43, no. 3 (2017):3224-3230,
https://doi.org/10.1016/j.ceramint.2016.11.149 .,
https://hdl.handle.net/21.15107/rcub_dais_15433 .

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