Preparation of LiFePO4/C composites by co-precipitation in the presence of stearic acid
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The olivine type compositions LiMPO4 (M = Fe, Mn, Co) are among the most attractive materials for the positive electrode of lithium-ion battery. The benefits of using LiFePO4 are excellent cycle life, high structural stability, low cost and environmental friendliness. Its main limitation is low total electrical conductivity, which can be overcome by carbon coating and/or the achievement of a small and homogeneous particle size distribution. Here is presented a simple and inexpensive route for obtaining LiFePO4/C composites by aqueous co-precipitation of an Fe(II) precursor material in the presence of stearic acid and subsequent heat treatment at different temperatures. Stearic acid serves as both chelating agent and carbonaceous material. During pyrolytic degradation stearic acid decomposes to carbon while creating reductive atmosphere. The crystal structures of the powders were revealed by X-ray powder diffraction. It was shown that phase purity of the synthesized powders is very depe...ndent on calcination temperature, as well as their electrochemical properties.
Keywords:
LiFePO4 / co-precipitation / stearic acidSource:
Programme and The Book of Abstracts / Twelfth Annual Conference YUCOMAT 2010, Herceg Novi, September 6–10, 2010, 2010, 10-10Publisher:
- Belgrade : Institute of Technical Sciences of SASA
Funding / projects:
- Sinteza funkcionalnih materijala sa kontrolisanom strukturom na molekularnom i nano nivou (RS-142006)
Institution/Community
Институт техничких наука САНУ / Institute of Technical Sciences of SASATY - CONF AU - Jugović, Dragana AU - Jović, Maja AU - Mitrić, Miodrag AU - Cvjetićanin, Nikola AU - Uskoković, Dragan PY - 2010 UR - https://dais.sanu.ac.rs/123456789/3556 AB - The olivine type compositions LiMPO4 (M = Fe, Mn, Co) are among the most attractive materials for the positive electrode of lithium-ion battery. The benefits of using LiFePO4 are excellent cycle life, high structural stability, low cost and environmental friendliness. Its main limitation is low total electrical conductivity, which can be overcome by carbon coating and/or the achievement of a small and homogeneous particle size distribution. Here is presented a simple and inexpensive route for obtaining LiFePO4/C composites by aqueous co-precipitation of an Fe(II) precursor material in the presence of stearic acid and subsequent heat treatment at different temperatures. Stearic acid serves as both chelating agent and carbonaceous material. During pyrolytic degradation stearic acid decomposes to carbon while creating reductive atmosphere. The crystal structures of the powders were revealed by X-ray powder diffraction. It was shown that phase purity of the synthesized powders is very dependent on calcination temperature, as well as their electrochemical properties. PB - Belgrade : Institute of Technical Sciences of SASA C3 - Programme and The Book of Abstracts / Twelfth Annual Conference YUCOMAT 2010, Herceg Novi, September 6–10, 2010 T1 - Preparation of LiFePO4/C composites by co-precipitation in the presence of stearic acid SP - 10 EP - 10 UR - https://hdl.handle.net/21.15107/rcub_dais_3556 ER -
@conference{ author = "Jugović, Dragana and Jović, Maja and Mitrić, Miodrag and Cvjetićanin, Nikola and Uskoković, Dragan", year = "2010", abstract = "The olivine type compositions LiMPO4 (M = Fe, Mn, Co) are among the most attractive materials for the positive electrode of lithium-ion battery. The benefits of using LiFePO4 are excellent cycle life, high structural stability, low cost and environmental friendliness. Its main limitation is low total electrical conductivity, which can be overcome by carbon coating and/or the achievement of a small and homogeneous particle size distribution. Here is presented a simple and inexpensive route for obtaining LiFePO4/C composites by aqueous co-precipitation of an Fe(II) precursor material in the presence of stearic acid and subsequent heat treatment at different temperatures. Stearic acid serves as both chelating agent and carbonaceous material. During pyrolytic degradation stearic acid decomposes to carbon while creating reductive atmosphere. The crystal structures of the powders were revealed by X-ray powder diffraction. It was shown that phase purity of the synthesized powders is very dependent on calcination temperature, as well as their electrochemical properties.", publisher = "Belgrade : Institute of Technical Sciences of SASA", journal = "Programme and The Book of Abstracts / Twelfth Annual Conference YUCOMAT 2010, Herceg Novi, September 6–10, 2010", title = "Preparation of LiFePO4/C composites by co-precipitation in the presence of stearic acid", pages = "10-10", url = "https://hdl.handle.net/21.15107/rcub_dais_3556" }
Jugović, D., Jović, M., Mitrić, M., Cvjetićanin, N.,& Uskoković, D.. (2010). Preparation of LiFePO4/C composites by co-precipitation in the presence of stearic acid. in Programme and The Book of Abstracts / Twelfth Annual Conference YUCOMAT 2010, Herceg Novi, September 6–10, 2010 Belgrade : Institute of Technical Sciences of SASA., 10-10. https://hdl.handle.net/21.15107/rcub_dais_3556
Jugović D, Jović M, Mitrić M, Cvjetićanin N, Uskoković D. Preparation of LiFePO4/C composites by co-precipitation in the presence of stearic acid. in Programme and The Book of Abstracts / Twelfth Annual Conference YUCOMAT 2010, Herceg Novi, September 6–10, 2010. 2010;:10-10. https://hdl.handle.net/21.15107/rcub_dais_3556 .
Jugović, Dragana, Jović, Maja, Mitrić, Miodrag, Cvjetićanin, Nikola, Uskoković, Dragan, "Preparation of LiFePO4/C composites by co-precipitation in the presence of stearic acid" in Programme and The Book of Abstracts / Twelfth Annual Conference YUCOMAT 2010, Herceg Novi, September 6–10, 2010 (2010):10-10, https://hdl.handle.net/21.15107/rcub_dais_3556 .