| Electrochemical Performance of Spherical LiCoO2 Powders Synthesized Using Ultrasonic Spray Pyrolysis Method (I) : Effect of Pyrolysis Conditions on Powder Characteristics |
| Seon-Hye Kim, Yong-Ho Choa1, Kwang-Bo Shim, Byung-Won Cho2, Chang-Sam Kim3 |
Department of Ceramic Engineering, Hanyang University
1Department of Chemical Engineering, Hanyang University
2Eco-Nano Research Center, KIST
3Division of Materials Science and Engineering, KIST |
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| ABSTRACT |
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Process Parameters were studied in synthesis of LiCoO$_2$ Powder by ultrasonic spray Pyrolysis. Concentration of the mixed solution influenced the size, shape, and yield of the synthesized powder. The yield was affected primarily by the height of the solution, and then by the flow rate of a carrier gas. The temperature of the reactor governed the crystallinity and morphology of the powder. LiCoO$_2$ powders were synthesized as a layered high temperature phase above 800$^{circ}C$. The synthesized powders were sphere and secondary Particles consisted of primary particles of 55-70 nm. The secondary Particles became bigger from 0.28 to 1.43 $mutextrm{m}$ as the concentration of the solution was increased from 0.05 to 2.0 M. The 2.0 M solution provided the highest production rate. |
| Key words:
Ultrasonic spray pyrolysis, Process parameter, Production rate |
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