Negative electrode plate, secondary battery, battery module, battery pack and power consuming device
AssigneeContemporary Amperex Technology (Hong Kong) Limited
InventorsDongyang Shi, Ning Chen, Shuangshuang Liu, Sitong Liu
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Abstract
A negative electrode plate includes a current collector and a coating applied to at least one surface of the current collector, the coating comprising a negative electrode active material and a metal powder, wherein the electrode potential of the metal powder in the coating relative to lithium may be between 1.6 and 3.5 V, the negative electrode active material may be a silicon-based material, and relative to the total weight of the silicon-based material and the metal powder, the proportion by weight of the metal powder may be 5 to 20% and the proportion by weight of the silicon-based material may be 80 to 95%.
Claims10
A negative electrode plate
- comprising a current collector and a coating applied to at least one surface of the current collector,
- the coating comprising a negative electrode active material and a metal powder,
- wherein an electrode potential of the metal powder in the coating relative to lithium is between 1.6 and 3.5 V, the negative electrode active material is a silicon-based material, and the silicon-based material includes silicon oxide,
- wherein, relative to a total weight of the silicon-based material and the metal powder, a proportion by weight of the metal powder is 5 to 20% and a proportion by weight of the silicon-based material is 80 to 95%, and
- wherein the metal powder is Ga, Tl, In, Sn, or Pb.
Dependencies are inferred from the claim text.