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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 31, Number 6
BKCSDE 31(6)
June 20, 2010 

LiMnBO3/C: A Potential Cathode Material for Lithium Batteries
V Aravindan, K Karthikeyan, S Amaresh, Y S Lee*
LiMnBO3, Carbon coating, Nano materials, Adipic acid, Impedance spectroscopy
LiMnBO3 was successfully synthesized by a solid-state reaction method both with and without a carbon coating. Adipic acid was used as source material for the carbon coating. LiMnBO3 was composed of many small polycrystalline particles with a size of about 50 - 70 nm, which showed a very even particle morphology and highly ordered crystalline particulates. Whereas the carbon coated LiMnBO3 was well covered by mat-like, fine material consisting of amorphous carbon derived from the carbonization of adipic acid during the synthetic process. Carbon coated cell exhibited improved and stable discharge capacity profile over the untreated. Two cells delivered an initial discharge capacity of 111 and 58 mAh/g for LiMnBO3/C and LiMnBO3, respectively. Carbon coating on the surface of the LiMnBO3 drastically improved discharge capacity due to the improved electric conductivity in the LiMnBO3 material.
1506 - 1508
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