Modified positive electrode material and preparation method therefor, and lithium ion battery

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United States of America

PATENT NO 12136730
APP PUB NO 20230163275A1
SERIAL NO

17535602

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Abstract

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The disclosure provides a modified positive electrode material, a preparation method therefor, and a lithium ion battery. The modified positive electrode material includes a core and a coating layer. The core contains Mn and Ni, the coating layer includes a first oxide coating layer coating on a surface of the core. A first element forming the first oxide coating layer is selected from one or more of a group of Si, Ti, V, Zr, Mo, W, Bi, Nb, and Ru. The first element with a high-valent state can partially enter the surface core structure of the positive electrode material to occupy the sites of manganese ions, and form a chemical bond stronger than a Mn—O. Thus, O and Mn in the core structure are difficult to precipitate, and the coating layer is difficult to fall off in cycle process. Moreover, structural stability of the modified positive electrode material is improved.

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Patent Owner(s)

Patent OwnerAddress
MICROVAST INC12603 SOUTHWEST FREEWAY SUITE 300 STAFFORD TX 77477
MICROVAST POWER SYSTEMS CO LTDNO 2198 HONGFENG ROAD NANHU NEW DISTRICT HUZHOU CITY ZHEJIANG PROVINCE 313000 HUZHOU CITY ZHEJIANG PROVINCE 313000

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Guo, Huijie Zhejiang, CN 4 0
Mattis, Wenjuan Liu Zhejiang, CN 22 3
Yonemoto, Bryan Clearwater, US 13 3

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