Patent ID: 11909035
Assignee: BTR NEW MATERIAL GROUP CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 9:
10. The method according to claim 6, wherein the method comprises the following steps:
dissolving the unsaturated carbonate and an unsaturated silane coupling agent in a solvent to prepare the monomer solution of the unsaturated carbonate;
polymerizing the monomer at 50° C. to 100° C. in the presence of the polymerization catalyst to obtain the polymer solution;
adding the SiOx-based active material, water and the polymer catalyst into the polymer solution, and further performing polymerizing at 50° C. to 100° C. to coat the SiOx-based active material; and
performing solid separation, and drying at 80° C. to 150° C. for 2 hours to 12 hours, to obtain the composite negative electrode material.