Lithium iron phosphate has become of great interest as storage cathode for the next generation of rechargeable lithium batteries. Olivine structure LiFePO(4)/C composite powder was prepared by ultrasound assisted synthesis. A polyvinyl alcohol solution was used as the source of an in situ formed carbon. X-ray powder diffraction confirmed the phase purity. X-ray powder diffraction data were used for the crystal structure refinement, based on Rietveld full profile method. All relevant structural and microstructural crystal parameters that could be significant for electrochemical intercalation/deintercalation processes were determined. The Rietveld refinement also showed additional electron density on the lithium sites, indicating 3 at.% iron on the lithium site. Electrochemical characteristic of the composite was evaluated by using galvanostatic charge/discharge tests. While cycling at C/3 (C/10) rate the discharge capacity increases, starting from the value of 94.1 (116.0) mAh/g and rea...ching 99.5 (124.0) mAh/g at the end of the cycling. Particle morphology was revealed by both scanning and transmission electron microscopies. On the thin particle edges carbon film with a typical thickness of several nanometers can be observed, as well as small carbon agglomerates (typical size LT 6 nm) at certain spots on the substrate surface. (c) 2008 Elsevier B.V. All rights reserved.
Keywords:
olivine / Rietveld analysis / lithium iron phosphate (LiFePO(4)) / sonochemistry / cathode material
TY - JOUR
AU - Jugović, Dragana
AU - Mitrić, Miodrag
AU - Cvjetićanin, Nikola
AU - Jančar, Boštjan
AU - Mentus, Slavko
AU - Uskoković, Dragan
PY - 2008
UR - http://dais.sanu.ac.rs/123456789/2739
AB - Lithium iron phosphate has become of great interest as storage cathode for the next generation of rechargeable lithium batteries. Olivine structure LiFePO(4)/C composite powder was prepared by ultrasound assisted synthesis. A polyvinyl alcohol solution was used as the source of an in situ formed carbon. X-ray powder diffraction confirmed the phase purity. X-ray powder diffraction data were used for the crystal structure refinement, based on Rietveld full profile method. All relevant structural and microstructural crystal parameters that could be significant for electrochemical intercalation/deintercalation processes were determined. The Rietveld refinement also showed additional electron density on the lithium sites, indicating 3 at.% iron on the lithium site. Electrochemical characteristic of the composite was evaluated by using galvanostatic charge/discharge tests. While cycling at C/3 (C/10) rate the discharge capacity increases, starting from the value of 94.1 (116.0) mAh/g and reaching 99.5 (124.0) mAh/g at the end of the cycling. Particle morphology was revealed by both scanning and transmission electron microscopies. On the thin particle edges carbon film with a typical thickness of several nanometers can be observed, as well as small carbon agglomerates (typical size LT 6 nm) at certain spots on the substrate surface. (c) 2008 Elsevier B.V. All rights reserved.
T2 - Solid State Ionics
T1 - Synthesis and characterization of LiFePO(4)/C composite obtained by sonochemical method
SP - 415
EP - 419
VL - 179
IS - 11-12
DO - 10.1016/j.ssi.2008.03.014
ER -
@article{
author = "Jugović, Dragana and Mitrić, Miodrag and Cvjetićanin, Nikola and Jančar, Boštjan and Mentus, Slavko and Uskoković, Dragan",
year = "2008",
url = "http://dais.sanu.ac.rs/123456789/2739",
abstract = "Lithium iron phosphate has become of great interest as storage cathode for the next generation of rechargeable lithium batteries. Olivine structure LiFePO(4)/C composite powder was prepared by ultrasound assisted synthesis. A polyvinyl alcohol solution was used as the source of an in situ formed carbon. X-ray powder diffraction confirmed the phase purity. X-ray powder diffraction data were used for the crystal structure refinement, based on Rietveld full profile method. All relevant structural and microstructural crystal parameters that could be significant for electrochemical intercalation/deintercalation processes were determined. The Rietveld refinement also showed additional electron density on the lithium sites, indicating 3 at.% iron on the lithium site. Electrochemical characteristic of the composite was evaluated by using galvanostatic charge/discharge tests. While cycling at C/3 (C/10) rate the discharge capacity increases, starting from the value of 94.1 (116.0) mAh/g and reaching 99.5 (124.0) mAh/g at the end of the cycling. Particle morphology was revealed by both scanning and transmission electron microscopies. On the thin particle edges carbon film with a typical thickness of several nanometers can be observed, as well as small carbon agglomerates (typical size LT 6 nm) at certain spots on the substrate surface. (c) 2008 Elsevier B.V. All rights reserved.",
journal = "Solid State Ionics",
title = "Synthesis and characterization of LiFePO(4)/C composite obtained by sonochemical method",
pages = "415-419",
volume = "179",
number = "11-12",
doi = "10.1016/j.ssi.2008.03.014"
}
Jugović D, Mitrić M, Cvjetićanin N, Jančar B, Mentus S, Uskoković D. Synthesis and characterization of LiFePO(4)/C composite obtained by sonochemical method. Solid State Ionics. 2008;179(11-12):415-419
Jugović, D., Mitrić, M., Cvjetićanin, N., Jančar, B., Mentus, S.,& Uskoković, D. (2008). Synthesis and characterization of LiFePO(4)/C composite obtained by sonochemical method.
Solid State Ionics, 179(11-12), 415-419.
https://doi.org/10.1016/j.ssi.2008.03.014
Jugović Dragana, Mitrić Miodrag, Cvjetićanin Nikola, Jančar Boštjan, Mentus Slavko, Uskoković Dragan, "Synthesis and characterization of LiFePO(4)/C composite obtained by sonochemical method" 179, no. 11-12 (2008):415-419,
https://doi.org/10.1016/j.ssi.2008.03.014 .
