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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 31, Number 2
BKCSDE 31(2)
February 20, 2010 

 
Title
Synthesis of LiCoO2 Nanoparticles by a Sonochemical Method under the Multibubble Sonoluminescence Conditions
Author
Jong Pil Park, Jea Young Park, Cha Hwan Hwang, Myung ho Choi, Jee Eon Kim, Kang Min Ok, Il Wun Shim*
Keywords
Co3O4 nanoparticles, LiOH-coated Co3O4 nanoparticles, LiCoO2 nanoparticles
Abstract
LiCoO2, a cathode material for lithium rechargeable batteries, was prepared in a nanoscale through a simple sonochemistry. First, Co3O4 nanoparticles were prepared by reacting NaOH and CoCl2 or CoSO4 with a sonochemical method, operated at 20 kHz and 220 W for 20 min, very powerful multibubble sonoluminescence conditions for chemical reactions. Second, LiOH was coated onto the Co3O4 nanoparticles by the same method as above. Finally, LiCoO2 nanoparticles of about 10 ~ 30 nm size in diameter were obtained by the thermal treatment of the resulting LiOH- coated Co3O4 nanoparticles at 500 oC for 3 hr. This synthetic process is relatively quite mild and simple compared to the known method for the synthesis of LiCoO2 nanoparticles. The materials synthesized were characterized by infrared spectroscopy, X-ray diffraction, inductively coupled plasma spectrometer, and high resolution-transmission electron microscopy analyses.
Page
327 - 330
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