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

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2016
895.pdf (63.00Kb)
Authors
Jugović, Dragana
Mitrić, Miodrag
Milović, Miloš
Cvjetićanin, Nikola
Jokić, Bojan
Umićević, Ana
Uskoković, Dragan
Conference object (Published version)
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Abstract
Low intrinsic electronic conductivity is the main weakness of LiFePO4 for the use as cathode material in lithium ion batteries. Here is presented an experimental proof of the theoretical prediction that fluorine doping of LiFePO4 can enhance its electrical conductivity. LiFePO4 and fluorine-doped LiFePO4 olivine type, carbon-free powders are synthesized and examined. Crystal structure refinements in the space group Pnma reveal that doping with fluorine ions preserves olivine structure with the reduction of both the lattice parameters and the antisite defect, and an increase of a crystallite size. A small amount of incorporated fluorine enhances electrical conductivity from 4.6 × 10-7 Scm-1 to 2.3 × 10-6 Scm-1 and has positive impact on the electrochemical performances. Several spectroscopy techniques (Mössbauer, FTIR, and Raman) disclose differences between two powders and additionally support the findings of both the Rietveld refinement and the conductivity measurements.
Keywords:
LiFePO4 / fluorine doping / magnetic properties
Source:
Programme and The Book of Abstracts / Eighteenth Annual Conference YUCOMAT 2016, Herceg Novi, September 5-10, 2016, 2016, 35-35
Publisher:
  • Belgrade : Materials Research Society of Serbia
Funding / projects:
  • Molecular designing of nanoparticles with controlled morphological and physicochemical characteristics and functional materials based on them (RS-45004)
  • Lithium-ion batteries and fuel cells - research and development (RS-45014)

ISBN: 978-86-919111-1-9

[ Google Scholar ]
Handle
https://hdl.handle.net/21.15107/rcub_dais_898
URI
https://dais.sanu.ac.rs/123456789/898
Collections
  • ИТН САНУ - Општа колекција / ITS SASA - General collection
Institution/Community
Институт техничких наука САНУ / Institute of Technical Sciences of SASA
TY  - CONF
AU  - Jugović, Dragana
AU  - Mitrić, Miodrag
AU  - Milović, Miloš
AU  - Cvjetićanin, Nikola
AU  - Jokić, Bojan
AU  - Umićević, Ana
AU  - Uskoković, Dragan
PY  - 2016
UR  - https://dais.sanu.ac.rs/123456789/898
AB  - Low intrinsic electronic conductivity is the main weakness of LiFePO4 for the use as cathode material in lithium ion batteries. Here is presented an experimental proof of the theoretical prediction that fluorine doping of LiFePO4 can enhance its electrical conductivity. LiFePO4 and fluorine-doped LiFePO4 olivine type, carbon-free powders are synthesized and examined. Crystal structure refinements in the space group Pnma reveal that doping with fluorine ions preserves olivine structure with the reduction of both the lattice parameters and the antisite defect, and an increase of a crystallite size. A small amount of incorporated fluorine enhances electrical conductivity from 4.6 × 10-7 Scm-1 to 2.3 × 10-6 Scm-1 and has positive impact on the electrochemical performances. Several spectroscopy techniques (Mössbauer, FTIR, and Raman) disclose differences between two powders and additionally support the findings of both the Rietveld refinement and the conductivity measurements.
PB  - Belgrade : Materials Research Society of Serbia
C3  - Programme and The Book of Abstracts / Eighteenth Annual Conference YUCOMAT 2016, Herceg Novi, September 5-10, 2016
T1  - The influence of fluorine doping on the structural and the electrical properties of LiFePO4 powder
SP  - 35
EP  - 35
UR  - https://hdl.handle.net/21.15107/rcub_dais_898
ER  - 
@conference{
author = "Jugović, Dragana and Mitrić, Miodrag and Milović, Miloš and Cvjetićanin, Nikola and Jokić, Bojan and Umićević, Ana and Uskoković, Dragan",
year = "2016",
abstract = "Low intrinsic electronic conductivity is the main weakness of LiFePO4 for the use as cathode material in lithium ion batteries. Here is presented an experimental proof of the theoretical prediction that fluorine doping of LiFePO4 can enhance its electrical conductivity. LiFePO4 and fluorine-doped LiFePO4 olivine type, carbon-free powders are synthesized and examined. Crystal structure refinements in the space group Pnma reveal that doping with fluorine ions preserves olivine structure with the reduction of both the lattice parameters and the antisite defect, and an increase of a crystallite size. A small amount of incorporated fluorine enhances electrical conductivity from 4.6 × 10-7 Scm-1 to 2.3 × 10-6 Scm-1 and has positive impact on the electrochemical performances. Several spectroscopy techniques (Mössbauer, FTIR, and Raman) disclose differences between two powders and additionally support the findings of both the Rietveld refinement and the conductivity measurements.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Programme and The Book of Abstracts / Eighteenth Annual Conference YUCOMAT 2016, Herceg Novi, September 5-10, 2016",
title = "The influence of fluorine doping on the structural and the electrical properties of LiFePO4 powder",
pages = "35-35",
url = "https://hdl.handle.net/21.15107/rcub_dais_898"
}
Jugović, D., Mitrić, M., Milović, M., Cvjetićanin, N., Jokić, B., Umićević, A.,& Uskoković, D.. (2016). The influence of fluorine doping on the structural and the electrical properties of LiFePO4 powder. in Programme and The Book of Abstracts / Eighteenth Annual Conference YUCOMAT 2016, Herceg Novi, September 5-10, 2016
Belgrade : Materials Research Society of Serbia., 35-35.
https://hdl.handle.net/21.15107/rcub_dais_898
Jugović D, Mitrić M, Milović M, Cvjetićanin N, Jokić B, Umićević A, Uskoković D. The influence of fluorine doping on the structural and the electrical properties of LiFePO4 powder. in Programme and The Book of Abstracts / Eighteenth Annual Conference YUCOMAT 2016, Herceg Novi, September 5-10, 2016. 2016;:35-35.
https://hdl.handle.net/21.15107/rcub_dais_898 .
Jugović, Dragana, Mitrić, Miodrag, Milović, Miloš, Cvjetićanin, Nikola, Jokić, Bojan, Umićević, Ana, Uskoković, Dragan, "The influence of fluorine doping on the structural and the electrical properties of LiFePO4 powder" in Programme and The Book of Abstracts / Eighteenth Annual Conference YUCOMAT 2016, Herceg Novi, September 5-10, 2016 (2016):35-35,
https://hdl.handle.net/21.15107/rcub_dais_898 .

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