Silicon-carbon composite material and preparation method therefor, secondary battery, and electric device
AssigneeContemporary Amperex Technology Co., Limited
InventorsKai WU, Liang YUN, Xin SUN, Yonghuang YE
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Abstract
Provided are a silicon-carbon composite material and a preparation method therefor, a secondary battery, and an electric device. The silicon-carbon composite material comprises silicon-carbon secondary particles; the silicon-carbon secondary particles comprise silicon-carbon primary particles and one-dimensional conductive agents; the one-dimensional conductive agents are distributed between the silicon-carbon primary particles.
Claims17
A silicon-carbon composite material, comprising silicon-carbon secondary particles, wherein the silicon-carbon secondary particles comprise silicon-carbon primary particles and a one-dimensional conductive agent, and the one-dimensional conductive agent is distributed between the silicon-carbon primary particles.
A preparation method for a silicon-carbon composite material, comprising:
- mixing and granulating silicon-carbon primary particles and a one-dimensional conductive agent in a solvent, and performing spray drying to obtain the silicon-carbon composite material,
- wherein the silicon-carbon composite material comprises silicon-carbon secondary particles, the silicon-carbon secondary particles comprise silicon-carbon primary particles and a one-dimensional conductive agent, and the one-dimensional conductive agent is distributed between the silicon-carbon primary particles.
Dependencies are inferred from the claim text.