{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
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    "mimeType": "image/png",
    "size": 114710
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  "description": "Provided is a separator for a secondary battery including a porous substrate and a coating layer disposed on at least one surface of the porous substrate. The coating layer includes a first fluorine-based binder including a vinylidene fluoride (VDF)-derived unit and a hexafluoropropylene…",
  "path": "/patents/1329539",
  "publishedAt": "2022-10-13T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M50/426",
    "SAMSUNG SDI CO., LTD."
  ],
  "textContent": "Provided is a separator for a secondary battery including a porous substrate and a coating layer disposed on at least one surface of the porous substrate. The coating layer includes a first fluorine-based binder including a vinylidene fluoride (VDF)-derived unit and a hexafluoropropylene (HFP)-derived unit, and a second fluorine-based binder including vinylidene fluoride (VDF)-derived unit and a tetrafluoroethylene (TFE)-derived unit, the hexafluoropropylene (HFP)-derived unit is included in an amount of less than or equal to 5 mol % based on 100 mol % of the first fluorine-based binder, the tetrafluoroethylene (TFE)-derived unit is included in an amount of greater than 10 mol % and less than or equal to 40 mol % based on 100 mol % of the second fluorine-based binder.",
  "title": "SEPARATOR FOR SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY COMPRISING SAME"
}