Modified high-nickel cathode material and preparation method thereof

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United States of America

PATENT NO 12244011
APP PUB NO 20230327102A1
SERIAL NO

18005965

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Abstract

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The present disclosure discloses a modified high-nickel cathode material, where the modified high-nickel cathode material is a SO42−-doped modified high-nickel cathode material, and SO42− is distributed in a secondary particle with a content gradient from high inside to low outside. A preparation method of the modified high-nickel cathode material includes: mixing a high-nickel cathode material, a lithium source, and a sulfate, and sintering a resulting mixture to obtain a matrix material; and water-washing and drying the matrix material to obtain the modified high-nickel cathode material. The present disclosure increases a migration rate of lithium ions in the material and greatly improves the initial capacity of the material, which reduces an energy barrier for migration of lithium ions, increases a migration rate of lithium ions among primary particles of the material, and improves the safety performance of the material.

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Patent Owner(s)

  • BASF SHANSHAN BATTERY MATERIALS CO., LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Han, Guishi Changsha, CN 2 0
Mo, Mengxia Changsha, CN 1 0
Tang, Bo Changsha, CN 64 240
Yu, Haiyang Changsha, CN 75 97

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