{
  "$type": "site.standard.document",
  "description": "A method of preparing a composite separator for a lithium battery includes: coating a binder composition on one side or both sides of a porous substrate; hot-air drying the porous substrate coated with the binder composition; and supplying a non-solvent during the hot-air drying, such that a porous…",
  "path": "/patents/1299676",
  "publishedAt": "2021-09-09T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M50/403",
    "Samsung SDI Co., Ltd."
  ],
  "textContent": "A method of preparing a composite separator for a lithium battery includes: coating a binder composition on one side or both sides of a porous substrate; hot-air drying the porous substrate coated with the binder composition; and supplying a non-solvent during the hot-air drying, such that a porous layer is on one side or both sides of the porous substrate, wherein the binder composition includes a good-solvent, a binder, and inorganic particles, an amount of the non-solvent supplied during the hot-air drying is from 12 g/mto 17 g/m, and a ratio (e) of the hot-air supply speed to the moving speed of the porous substrate per unit transit time in the hot-air dryer is from 2.2 to 5.0.",
  "title": "METHOD FOR PREPARING COMPOSITE SEPARATOR, COMPOSITE SEPARATOR, AND LITHIUM BATTERY COMPRISING COMPOSITE SEPARATOR"
}