IR Study of Ozone Modified Graphite Matrix

The oxidation of graphite powder was reported to enhance the capacity of graphite anodes in Li-ion batteries. Here we present IR-spectroscopic study of the graphite powder modified via oxidation by ozone with the subsequent LiOH or butyl-Li treatment compared to the results obtained by "wet&quo...

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Published in:Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals Molecular crystals and liquid crystals, 2000-03, Vol.340 (1), p.331-336
Main Authors: Asrian, Nadejda A., Bondarenko, Galina N., Yemelianova, Galina I., Gorlenko, Liubov Ye, Adrov, Oleg I., Marassi, Roberto, Nalimova, Vera A., Sklovsky, Dmitry E.
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Language:English
Subjects:
graphite
IR-spectroscopy
lithium ion batteries
oxidation
ozone
solid electrolyte interface
surface
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creator Asrian, Nadejda A.
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description The oxidation of graphite powder was reported to enhance the capacity of graphite anodes in Li-ion batteries. Here we present IR-spectroscopic study of the graphite powder modified via oxidation by ozone with the subsequent LiOH or butyl-Li treatment compared to the results obtained by "wet" acid oxidation. Ozone treatment leads to the formation of ozonides, C-O-O-C, carboxylic and epoxy groups on graphite surface. Subsequent treatment of ozone modified graphite with LiOH eliminates the majority of C-O containing groups and yields only a few COOLi surface groups. Treatment of ozonated graphite with butyllithium appears to be more efficient.
doi_str_mv 10.1080/10587250008025488
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subjects graphite
IR-spectroscopy
lithium ion batteries
oxidation
ozone
solid electrolyte interface
surface
title IR Study of Ozone Modified Graphite Matrix
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