{
  "$type": "site.standard.document",
  "description": "An aspect of the present invention achieves a nonaqueous electrolyte secondary battery laminated separator which has excellent heat resistance and exhibits an excellent initial battery characteristic when used in a nonaqueous electrolyte secondary battery. A nonaqueous electrolyte secondary battery…",
  "path": "/patents/1275064",
  "publishedAt": "2020-10-22T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M2/1686",
    "Sumitomo Chemical Company, Limited"
  ],
  "textContent": "An aspect of the present invention achieves a nonaqueous electrolyte secondary battery laminated separator which has excellent heat resistance and exhibits an excellent initial battery characteristic when used in a nonaqueous electrolyte secondary battery. A nonaqueous electrolyte secondary battery laminated separator in accordance with an aspect of the present invention includes: a polyolefin porous film; and a porous layer which (i) is disposed on at least one surface of the polyolefin porous film and (ii) includes a heat resistant filler, the porous layer having a surface which has cracks, a ratio of a total area of the cracks to a surface area of the porous layer being 0.15% to 10%.",
  "title": "NONAQUEOUS ELECTROLYTE SECONDARY BATTERY LAMINATED SEPARATOR"
}