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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 32, Number 8
BKCSDE 32(8)
August 20, 2011

Title	Study on the Dominant Film-Forming Site among Components of Li(Ni_1/3Co_1/3Mn_1/3)O₂ Cathode in Li-ion Batteries
Author	Ketack Kim*, Daewoong Kam, Cao Cuong Nguyen, Seung-Wan Song, Robert Kostecki
Keywords	Li-ion battery, Li(Ni1/3Co1/3Mn1/3)O2 cathode, Electrolyte decomposition
Abstract	Surface film formation on Li(Ni1/3Co1/3Mn1/3)O2 cathodes upon oxidation of electrolyte during electrochemical cycling was investigated. Information on the important factors for film formation on the cathode can facilitate the design of additives that improve the properties of the cathode. Pyrazole is added to the electrolyte because it is readily oxidized to form a surface film on the cathode. The results of differential scanning calorimetry and Fourier transform infrared spectroscopy (FTIR) showed that the active material played a dominant role in the interfacial film formation with the electrolyte. Carbon black played a negligible role in the surface film formation.
Page	2571 - 2576
Full Text	PDF

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