Contemporary Amperex Technology Co., Ltd.

Contemporary Amperex Technology (hong Kong) Limited

Binyi Chen

Jiazheng Wang

Na Liu

Chuying Ouyang

Liangbin Liu

Zijian Lv

Qingwei Yan

Xuan Li

The present disclosure provides a secondary battery including a negative electrode sheet. The negative electrode sheet includes: a negative electrode current collector; a first negative film layer provided on at least one surface of the negative electrode current collector; and a second negative film layer provided on a surface of the first negative film layer. The first negative film layer includes a first negative active material and a first conductive agent, and the first negative active material includes a silicon-based material. A mass proportion of the silicon-based material in the first negative film layer is greater than or equal to 30%, and a mass proportion of the first conductive agent in the first negative film layer is greater than or equal to 25%. The secondary battery of the present disclosure does not easily expand and has good cycle performance.

Secondary battery and power consumption apparatus including the same preliminary class

An artificial graphite satisfies: PD/PD≤1.35, where PDis a compacted density of the artificial graphite measured under a pressure of 5 ton, and PDis a compacted density of the artificial graphite measured under a pressure of 0.5 ton.

Artificial graphite, preparation method thereof, secondary battery containing the same and power consuming device

Growing community of inventors

Ningde, China

Binyi Chen