Mass Production and Battery Properties of LiNi0.5Mn1.5O4 Powders Prepared by Internal Combustion Type Spray Pyrolysis

Masayuki Kojima; Izumi Mukoyama; Kenichi Myoujin; Takayuki Kodera; Takashi Ogihara

doi:10.4028/www.scientific.net/KEM.388.85

Paper Titles

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Mass Production and Battery Properties of LiNi_0.5Mn_1.5O₄ Powders Prepared by Internal Combustion Type Spray Pyrolysis

Abstract:

Internal combustion type spray pyrolysis apparatus was used to prepare cathode materials for lithium ion batteries. Spherical LiNi0.5Mn1.5O4 precursor powders with an average size of about 2 m were successfully produced by this technique. After calcination at 800°C, LiNi0.5Mn1.5O4 precursor powders crystallized to a spinel structure. The spherical morphology changed to an irregular morphology at temperatures higher than 900°C. The discharge capacity of the LiNi0.5Mn1.5O4 cathode was 130 mAh/g at 1C. After 300 cycles at 1C, 90% of the initial discharge capacity was maintained, and after 100 cycles at 6C, 70% of the discharge capacity at 1C was maintained.