Positive electrode active material, secondary battery, and electronic device

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12244007
APP PUB NO 20240266515A1
SERIAL NO

18608249

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Abstract

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A positive electrode active material in which a capacity decrease caused by charge and discharge cycles is suppressed is provided. Alternatively, a positive electrode active material having a crystal structure that is unlikely to be broken by repeated charging and discharging is provided. The positive electrode active material contains titanium, nickel, aluminum, magnesium, and fluorine, and includes a region where titanium is unevenly distributed, a region where nickel is unevenly distributed, and a region where magnesium is unevenly distributed in a projection on its surface. Aluminum is preferably unevenly distributed in a surface portion, not in the projection, of the positive electrode active material.

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Patent Owner(s)

  • SEMICONDUCTOR ENERGY LABORATORY CO. LTD.

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kadoma, Hiroshi Kanagawa, JP 110 1990
Komatsu, Yoshihiro Kanagawa, JP 44 248
Momma, Yohei Kanagawa, JP 150 546
Saga, Shiori Kanagawa, JP 6 1
Yamazaki, Shunpei Tokyo, JP 7534 239327

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