{
  "$type": "site.standard.document",
  "description": "The present application provides a composite negative electrode material of a lithium ion battery, a preparation method thereof and the use thereof in a lithium ion battery. The composite negative electrode material includes a SiO-based active material and a polycarbonate coating layer coated on a…",
  "path": "/patents/1291436",
  "publishedAt": "2021-05-27T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M4/366",
    "BTR NEW MATERIAL GROUP CO., LTD."
  ],
  "textContent": "The present application provides a composite negative electrode material of a lithium ion battery, a preparation method thereof and the use thereof in a lithium ion battery. The composite negative electrode material includes a SiO-based active material and a polycarbonate coating layer coated on a surface of the SiO-based active material. The method includes: (1) preparing a monomer solution of unsaturated carbonate; (2) polymerizing the monomer in presence of a polymerization catalyst to obtain a polymer solution; and (3) adding a SiO-based active material, water and a polymer catalyst to the polymer solution, and further polymerizing to coat the SiO-based active material, to obtain the composite negative electrode material.",
  "title": "COMPOSITE NEGATIVE ELECTRODE MATERIAL FOR LITHIUM ION BATTERY, PREPARATION METHOD THEREOF, AND USE THEREOF IN LITHIUM ION BATTERY"
}