Ningde Amperex Technology Limited

Qunchao Liao

Yuansen Xie

Hang Cui

A negative electrode material includes a silicon-based material and a carbon material. Peaks with a shift range of 1255˜1355 cmand 1575˜1600 cmin a Raman spectrum of the carbon material are a D peak and a G peak respectively. Peaks with a shift range of 1255˜1355 cmand 1575˜1600 cmin a Raman spectrum of the silicon-based material are the D peak and the G peak respectively. A scattering peak intensity ratio of D versus G peaks of the carbon material is A, and a scattering peak intensity ratio of D versus G peaks of the silicon-based material is B. 0.15≤A≤0.9, 0.8≤B≤2.0, and 0.2<B−A<1.8.

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Fujian, China

Qunchao Liao