Fluidized large-scale preparation method for silicon-carbon negative electrode material

Abstract

Some embodiments relate to a fluidized large-scale preparation method for a silicon-carbon negative electrode material, relating to the technical field of battery materials, including: crushing a raw material, performing a fluidized silicon deposition reaction and a fluidized carbon deposition reaction. The fluidized silicon deposition reaction and the fluidized carbon deposition reaction are performed in a stirred fluidized bed reactor; and conditions of the stirred fluidized bed reactor include: a temperature of 300-1000° C., and a stirring speed of 1-240 r/min. A silicon material and a carbon material are compounded using the stirred fluidized bed reactor, so as to realize large-scale preparation of the silicon-carbon negative electrode material, implement conductance modulation of materials, improve reaction activity and area of an electrode, shorten a lithium-ion diffusion distance, elevate a diffusion rate of lithium ions, and finally ameliorate cycle capacity, rate capability and the like of batteries.

Dependencies are inferred from the claim text.