Transition metal composite hydroxide particles and production method thereof, cathode active material for non-aqueous electrolyte rechargeable battery and production method thereof, and nonaqueous electrolyte rechargeable battery

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United States of America

PATENT NO 11283072
APP PUB NO 20200006770A1
SERIAL NO

16539170

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Abstract

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Transition metal composite hydroxide particles as a precursor to a cathode active material for use in a non-aqueous electrolyte rechargeable battery, where the transition metal composite hydroxide has secondary particles formed by an aggregation of plate-shaped primary particles and fine primary particles, are described. The secondary particles have a center section formed by the plate-shaped primary particles, a layered structure with a low-density section formed by the fine primary particles, and a high-density section formed by the plate-shaped primary particles on the outside of the center section. The average value of the ratio of the center section outer diameter to the particle size of the secondary particles is 30% to 80%, and the average value of the ratio of the high-density section radial direction thickness to the particle size of the secondary particles is 5% to 25%.

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Patent Owner(s)

Patent OwnerAddress
SUMITOMO METAL MINING CO LTDTOKYO 105-8716

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Aida, Taira Ehime, JP 31 147
Kamata, Yasutaka Ehime, JP 16 107
Toya, Hiroyuki Ehime, JP 53 652

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