Abstract
Lithium cobalt oxide powders have been successfully prepared by a molten-salt synthesis (MSS) method using a eutectic mixture of LiCl and Li2CO3 salts. The physico-chemical properties of the lithium cobalt oxide powders are investigated by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), particle-size analysis and charge-discharge cycling. A lower temperature and a shorter time (approximately 700 °C and 1 h) in the Li:Co = 7 system are sufficient to prepare single-phase HT-LiCoO2 powders by the MSS method, compared with the solid-state reaction method. Charge-discharge tests show that the lithium cobalt oxide prepared at 800 °C has an initial discharge capacity as high as 140 mA h g-1, and 100 mA h g-1 after 40 cycles. The dependence of the synthetic conditions of HT-LiCoO2 on the reaction temperature, time and amount of flux with respect to starting oxides is extensively investigated.
| Original language | English |
|---|---|
| Pages (from-to) | 95-101 |
| Number of pages | 7 |
| Journal | Journal of Power Sources |
| Volume | 92 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - 2001 Jan 1 |
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ASJC Scopus subject areas
- Electrochemistry
- Fuel Technology
- Materials Chemistry
Cite this
Synthesis and electrochemical properties of lithium cobalt oxides prepared by molten-salt synthesis using the eutectic mixture of LiCl-Li2CO3 . / Han, Chi Hwan; Hong, Young Sik; Park, Chang Moon; Kim, Keon.
In: Journal of Power Sources, Vol. 92, No. 1-2, 01.01.2001, p. 95-101.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Synthesis and electrochemical properties of lithium cobalt oxides prepared by molten-salt synthesis using the eutectic mixture of LiCl-Li2CO3
AU - Han, Chi Hwan
AU - Hong, Young Sik
AU - Park, Chang Moon
AU - Kim, Keon
PY - 2001/1/1
Y1 - 2001/1/1
N2 - Lithium cobalt oxide powders have been successfully prepared by a molten-salt synthesis (MSS) method using a eutectic mixture of LiCl and Li2CO3 salts. The physico-chemical properties of the lithium cobalt oxide powders are investigated by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), particle-size analysis and charge-discharge cycling. A lower temperature and a shorter time (approximately 700 °C and 1 h) in the Li:Co = 7 system are sufficient to prepare single-phase HT-LiCoO2 powders by the MSS method, compared with the solid-state reaction method. Charge-discharge tests show that the lithium cobalt oxide prepared at 800 °C has an initial discharge capacity as high as 140 mA h g-1, and 100 mA h g-1 after 40 cycles. The dependence of the synthetic conditions of HT-LiCoO2 on the reaction temperature, time and amount of flux with respect to starting oxides is extensively investigated.
AB - Lithium cobalt oxide powders have been successfully prepared by a molten-salt synthesis (MSS) method using a eutectic mixture of LiCl and Li2CO3 salts. The physico-chemical properties of the lithium cobalt oxide powders are investigated by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), particle-size analysis and charge-discharge cycling. A lower temperature and a shorter time (approximately 700 °C and 1 h) in the Li:Co = 7 system are sufficient to prepare single-phase HT-LiCoO2 powders by the MSS method, compared with the solid-state reaction method. Charge-discharge tests show that the lithium cobalt oxide prepared at 800 °C has an initial discharge capacity as high as 140 mA h g-1, and 100 mA h g-1 after 40 cycles. The dependence of the synthetic conditions of HT-LiCoO2 on the reaction temperature, time and amount of flux with respect to starting oxides is extensively investigated.
UR - http://www.scopus.com/inward/record.url?scp=0035203838&partnerID=8YFLogxK
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U2 - 10.1016/S0378-7753(00)00505-X
DO - 10.1016/S0378-7753(00)00505-X
M3 - Article
AN - SCOPUS:0035203838
VL - 92
SP - 95
EP - 101
JO - Journal of Power Sources
JF - Journal of Power Sources
SN - 0378-7753
IS - 1-2
ER -