Properties of lithium cobaltate powders prepared by FEAG and ultrasonic spray pyrolysis process

概要

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LiCoO2 cathode powders were prepared by the two different spray pyrolysis processes. The mean size of the post-treated LiCoO2 powders prepared by the FEAG process was 1.6 μm when the excess amount of lithium component was 10 mol% of the stoichiometric value. The post-treated LiCoO2 powders obtained by ultrasonic spray pyrolysis were finer than those prepared by the FEAG process. The initial discharge capacities of the LiCoO2 powders prepared by the FEAG process changed from 119 to 156 mAh/g when the excess amounts of lithium component were changed from 3 to 20 mol% of the stoichiometric value. The maximum initial discharge capacity of the LiCoO2 powders prepared by the ultrasonic spray pyroysis was 151 mAh/g obtained from the excess amount of lithium component of 3 mol% of the stoichiometric value.
社団法人日本セラミックス協会の論文
2009-05-01