{
  "$type": "site.standard.document",
  "coverImage": {
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  "description": "Provided are a microporous polyolefin film usable as a separator for a lithium ion secondary battery and a method for preparing the same, the microporous polyolefin film including one or more layers, wherein the microporous polyolefin has a thickness of 5-40 µm, a porosity of 30¼60%, a puncture…",
  "path": "/patents/988851",
  "publishedAt": "2013-07-10T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B01D61/147",
    "SK INNOVATION CO LTD [KR]"
  ],
  "textContent": "Provided are a microporous polyolefin film usable as a separator for a lithium ion secondary battery and a method for preparing the same, the microporous polyolefin film including one or more layers, wherein the microporous polyolefin has a thickness of 5-40 µm, a porosity of 30¼60%, a puncture strength of 0.22N/µm or higher, and a quality factor of 20gf/(sec/100cc) or greater, so that the microporous polyolefin film can have excellent mechanical strength, permeability, and heat shrinkage characteristics, and thus, is suitably used for a separator for a high-capacity and high-output battery.",
  "title": "Microporous polyolefin film and method for preparing the same"
}