Contemporary Amperex Technology (hong Kong) Limited

Contemporary Amperex Technology Co., Ltd.

Fan Wang

Xiaomei Liu

Guobao Wang

Xianfeng Zheng

The present application relates to a positive electrode lithium replenishment material, and a preparation method thereof. The positive electrode lithium replenishment material, includes a first lithium-containing compound selected from one or more of compounds whose chemical formula is denoted by Formula I, LiA, 0<x, y≤3. An outer layer of the positive electrode lithium replenishment material includes a second lithium-containing compound. An activity of reacting with water by the second lithium-containing compound is lower than that by the first lithium-containing compound. The positive electrode lithium replenishment material can effectively prevent a gelling phenomenon in a slurry preparation process, and slow down inactivation of the lithium replenishment material caused by a reaction between the electrode plate with moisture and carbon dioxide in the air during storage of the electrode plate, thereby increasing manufacturability of lithium-ion batteries replenished with lithium, and improving the electrochemical performance of the lithium-ion batteries.

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Ningde, China

Fan Wang