{
  "$type": "site.standard.document",
  "description": "The present disclosure relates to a separator for a lithium secondary battery, a method for manufacturing the same and a lithium secondary battery comprising the same, and the separator according to an embodiment of the present disclosure comprises a porous polymer substrate having a plurality of…",
  "path": "/patents/1402455",
  "publishedAt": "2026-01-28T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M10/052",
    "LG ENERGY SOLUTION LTD [KR]"
  ],
  "textContent": "The present disclosure relates to a separator for a lithium secondary battery, a method for manufacturing the same and a lithium secondary battery comprising the same, and the separator according to an embodiment of the present disclosure comprises a porous polymer substrate having a plurality of pores and a polymer coating layer formed on at least one surface of the porous polymer substrate, wherein the polymer coating layer comprises a thermosetting phenol-based resin having at least one hydroxyl group and an aromatic ring, and a coating amount of the thermosetting phenol-based resin is 0.01g to 3g per 1m2 of the porous polymer substrate on the basis of one surface coated.When the separator of the present disclosure is exposed to high temperature due to ignition or the like, the thermosetting phenol-based resin of the porous coating layer is thermoset to form a network structure, thereby improving the heat resistant property of the separator without using inorganic particles and suppressing the thermal contraction of the separator when soaked in an electrolyte solution.",
  "title": "SEPARATOR FOR LITHIUM SECONDARY BATTERY, METHOD FOR MANUFACTURING SAME, AND LITHIUM SECONDARY BATTERY COMPRISING SAME"
}