Carbon coated LiFePO4 cathode material obtained by freeze-drying method

2013
Authors
Kuzmanović, Maja
Jugović, Dragana

Mitrić, Miodrag

Jokić, Bojan

Cvjetićanin, Nikola

Uskoković, Dragan

Conference object (Published version)
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One of the most perspective cathode materials for the application in the Li-ion batteries is LiFePO4. It has high theoretical specific capacity, good cycle life and technically suitable flat voltage of 3.45 V versus Li. However, its main disadvantages are low electronic and ionic conductivities which can be overcome by particle size minimization and/or carbon coating. Here is presented the freeze-drying method for the preparation of carbon coated LiFePO4 particles. It involves freezing of a precursor solution, vacuum drying and final calcination of as-dried powder under slightly reductive atmosphere. The main advantage of this preparation process is mixing at the atomic level which provides more homogeneous precursor. Water solutions containing Li+,PO4 3- and Fe2+ ions with the addition of various organic compounds as a carbon source were used as the precursor solutions. The as-prepared powders were fully characterized by means of X-ray powder diffraction, scanning electron microscopy,... particle size analyzer and galvanostatic cycling.
Keywords:
LiFePO4 / lithium iron phosphate / cathode materials / freeze-dryingSource:
The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts, 2013, 76-76Publisher:
- Belgrade : Materials Research Society of Serbia
Funding / projects:
Institution/Community
Институт техничких наука САНУ / Institute of Technical Sciences of SASATY - CONF AU - Kuzmanović, Maja AU - Jugović, Dragana AU - Mitrić, Miodrag AU - Jokić, Bojan AU - Cvjetićanin, Nikola AU - Uskoković, Dragan PY - 2013 UR - https://dais.sanu.ac.rs/123456789/395 AB - One of the most perspective cathode materials for the application in the Li-ion batteries is LiFePO4. It has high theoretical specific capacity, good cycle life and technically suitable flat voltage of 3.45 V versus Li. However, its main disadvantages are low electronic and ionic conductivities which can be overcome by particle size minimization and/or carbon coating. Here is presented the freeze-drying method for the preparation of carbon coated LiFePO4 particles. It involves freezing of a precursor solution, vacuum drying and final calcination of as-dried powder under slightly reductive atmosphere. The main advantage of this preparation process is mixing at the atomic level which provides more homogeneous precursor. Water solutions containing Li+,PO4 3- and Fe2+ ions with the addition of various organic compounds as a carbon source were used as the precursor solutions. The as-prepared powders were fully characterized by means of X-ray powder diffraction, scanning electron microscopy, particle size analyzer and galvanostatic cycling. PB - Belgrade : Materials Research Society of Serbia C3 - The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts T1 - Carbon coated LiFePO4 cathode material obtained by freeze-drying method SP - 76 EP - 76 UR - https://hdl.handle.net/21.15107/rcub_dais_395 ER -
@conference{ author = "Kuzmanović, Maja and Jugović, Dragana and Mitrić, Miodrag and Jokić, Bojan and Cvjetićanin, Nikola and Uskoković, Dragan", year = "2013", abstract = "One of the most perspective cathode materials for the application in the Li-ion batteries is LiFePO4. It has high theoretical specific capacity, good cycle life and technically suitable flat voltage of 3.45 V versus Li. However, its main disadvantages are low electronic and ionic conductivities which can be overcome by particle size minimization and/or carbon coating. Here is presented the freeze-drying method for the preparation of carbon coated LiFePO4 particles. It involves freezing of a precursor solution, vacuum drying and final calcination of as-dried powder under slightly reductive atmosphere. The main advantage of this preparation process is mixing at the atomic level which provides more homogeneous precursor. Water solutions containing Li+,PO4 3- and Fe2+ ions with the addition of various organic compounds as a carbon source were used as the precursor solutions. The as-prepared powders were fully characterized by means of X-ray powder diffraction, scanning electron microscopy, particle size analyzer and galvanostatic cycling.", publisher = "Belgrade : Materials Research Society of Serbia", journal = "The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts", title = "Carbon coated LiFePO4 cathode material obtained by freeze-drying method", pages = "76-76", url = "https://hdl.handle.net/21.15107/rcub_dais_395" }
Kuzmanović, M., Jugović, D., Mitrić, M., Jokić, B., Cvjetićanin, N.,& Uskoković, D.. (2013). Carbon coated LiFePO4 cathode material obtained by freeze-drying method. in The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts Belgrade : Materials Research Society of Serbia., 76-76. https://hdl.handle.net/21.15107/rcub_dais_395
Kuzmanović M, Jugović D, Mitrić M, Jokić B, Cvjetićanin N, Uskoković D. Carbon coated LiFePO4 cathode material obtained by freeze-drying method. in The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts. 2013;:76-76. https://hdl.handle.net/21.15107/rcub_dais_395 .
Kuzmanović, Maja, Jugović, Dragana, Mitrić, Miodrag, Jokić, Bojan, Cvjetićanin, Nikola, Uskoković, Dragan, "Carbon coated LiFePO4 cathode material obtained by freeze-drying method" in The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts (2013):76-76, https://hdl.handle.net/21.15107/rcub_dais_395 .