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Fluorine Doping of Layered NaxCoO2 Structure

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2015
7537.pdf (387.1Kb)
Authors
Jugović, Dragana
Milović, Miloš
Mitrić, Miodrag
Cvjetićanin, Nikola
Avdeev, Max
Jokić, Bojan M.
Uskoković, Dragan
Contributors
Uskoković, Dragan
Radmilović, Velimir R.
Conference object
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Abstract
The room temperature Na-ion secondary battery has been under focus lately due to its feasibility to compete against the already well-established Li-ion secondary battery. Transition metal oxides of general formula NaxMO2 have been investigated as potential cathode materials for sodium batteries. Layered NaxCoO2 is synthesized via solid-state method at 900 ºC in air atmosphere. Fluorine doping of the as-prepared powder is established by the use of ammonium hydrogen difluoride (NH4HF2) as a fluorinating agent. The fluorination takes place only at low temperature (200 ºC), while the treatment at higher temperatures (≥ 400 ºC) facilitates the formation of NaF. It is shown that various and controllable amounts of fluorine can be successfully incorporated into the structure. Finally, the effects of fluorine doping on both structural and electrochemical properties are examined.
Keywords:
Na-ion secondary batteries / fluorine / doping / NaxCoO2
Source:
Programme and The Book of Abstracts / Seventeenth Annual Conference YUCOMAT 205, Herceg Novi, August 31– September 4, 2015, 2015, 12-12
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)
[ Google Scholar ]
URI
http://dais.sanu.ac.rs/123456789/827
http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/1107
http://www.itn.sanu.ac.rs/opus4/files/1107/Jugovic_YUCOMAT-2015.pdf
https://vinar.vin.bg.ac.rs/handle/123456789/7543
Collections
  • DAIS Import
Institution/Community
Vinča
TY  - CONF
AU  - Jugović, Dragana
AU  - Milović, Miloš
AU  - Mitrić, Miodrag
AU  - Cvjetićanin, Nikola
AU  - Avdeev, Max
AU  - Jokić, Bojan M.
AU  - Uskoković, Dragan
PY  - 2015
UR  - http://dais.sanu.ac.rs/123456789/827
UR  - http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/1107
UR  - http://www.itn.sanu.ac.rs/opus4/files/1107/Jugovic_YUCOMAT-2015.pdf
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7543
AB  - The room temperature Na-ion secondary battery has been under focus lately due to its feasibility to compete against the already well-established Li-ion secondary battery. Transition metal oxides of general formula NaxMO2 have been investigated as potential cathode materials for sodium batteries. Layered NaxCoO2 is synthesized via solid-state method at 900 ºC in air atmosphere. Fluorine doping of the as-prepared powder is established by the use of ammonium hydrogen difluoride (NH4HF2) as a fluorinating agent. The fluorination takes place only at low temperature (200 ºC), while the treatment at higher temperatures (≥ 400 ºC) facilitates the formation of NaF. It is shown that various and controllable amounts of fluorine can be successfully incorporated into the structure. Finally, the effects of fluorine doping on both structural and electrochemical properties are examined.
PB  - Belgrade : Materials Research Society of Serbia
C3  - Programme and The Book of Abstracts / Seventeenth Annual Conference YUCOMAT 205, Herceg Novi, August 31– September 4, 2015
T1  - Fluorine Doping of Layered NaxCoO2 Structure
SP  - 12
EP  - 12
ER  - 
@conference{
author = "Jugović, Dragana and Milović, Miloš and Mitrić, Miodrag and Cvjetićanin, Nikola and Avdeev, Max and Jokić, Bojan M. and Uskoković, Dragan",
year = "2015",
abstract = "The room temperature Na-ion secondary battery has been under focus lately due to its feasibility to compete against the already well-established Li-ion secondary battery. Transition metal oxides of general formula NaxMO2 have been investigated as potential cathode materials for sodium batteries. Layered NaxCoO2 is synthesized via solid-state method at 900 ºC in air atmosphere. Fluorine doping of the as-prepared powder is established by the use of ammonium hydrogen difluoride (NH4HF2) as a fluorinating agent. The fluorination takes place only at low temperature (200 ºC), while the treatment at higher temperatures (≥ 400 ºC) facilitates the formation of NaF. It is shown that various and controllable amounts of fluorine can be successfully incorporated into the structure. Finally, the effects of fluorine doping on both structural and electrochemical properties are examined.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Programme and The Book of Abstracts / Seventeenth Annual Conference YUCOMAT 205, Herceg Novi, August 31– September 4, 2015",
title = "Fluorine Doping of Layered NaxCoO2 Structure",
pages = "12-12"
}
Jugović, D., Milović, M., Mitrić, M., Cvjetićanin, N., Avdeev, M., Jokić, B. M.,& Uskoković, D.. (2015). Fluorine Doping of Layered NaxCoO2 Structure. in Programme and The Book of Abstracts / Seventeenth Annual Conference YUCOMAT 205, Herceg Novi, August 31– September 4, 2015
Belgrade : Materials Research Society of Serbia., 12-12.
Jugović D, Milović M, Mitrić M, Cvjetićanin N, Avdeev M, Jokić BM, Uskoković D. Fluorine Doping of Layered NaxCoO2 Structure. in Programme and The Book of Abstracts / Seventeenth Annual Conference YUCOMAT 205, Herceg Novi, August 31– September 4, 2015. 2015;:12-12..
Jugović, Dragana, Milović, Miloš, Mitrić, Miodrag, Cvjetićanin, Nikola, Avdeev, Max, Jokić, Bojan M., Uskoković, Dragan, "Fluorine Doping of Layered NaxCoO2 Structure" in Programme and The Book of Abstracts / Seventeenth Annual Conference YUCOMAT 205, Herceg Novi, August 31– September 4, 2015 (2015):12-12.

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