Positive electrode active material for nonaqueous electrolyte secondary batteries, and nonaqueous electrolyte secondary battery

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United States of America

PATENT NO 12166207
APP PUB NO 20220271284A1
SERIAL NO

17630362

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Abstract

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A positive electrode active material for nonaqueous electrolyte secondary batteries contains a lithium transition metal composite oxide that contains not less than 80% by mole of Ni relative to the total number of moles of metal elements other than Li; and Ti is present at least in the surfaces of particles of the composite oxide. With respect to this positive electrode active material, if particles having a volume-based particle diameter more than the 70% particle diameter (D70) are taken as first particles and particles having a volume-based particle diameter less than the 30% particle diameter (D30) are taken as second particles, the molar fraction (A2) of Ti relative to the total number of moles of metal elements in the surfaces of the second particles is higher than the molar fraction (A1) of Ti relative to the total number of moles of metal elements in the surfaces of the first particles.

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Patent Owner(s)

Patent OwnerAddress
PANASONIC HOLDINGS CORPORATION1006 OAZA KADOMA KADOMA-SHI OSAKA 571-8501

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Goto, Natsumi Hyogo, JP 25 38
Ko, Takashi Osaka, JP 22 8
Niina, Fumiharu Hyogo, JP 48 128
Suzuki, Shinya Hyogo, JP 272 1691
Tsuruta, Sho Osaka, JP 24 65
Yanagida, Katsunori Hyogo, JP 89 474

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