{
  "$type": "site.standard.document",
  "description": "A non-aqueous secondary battery separator composed of a porous film made of an organic polymer, which includes a network-like support, swells in the electrolyte solution and retains the electrolyte solution, wherein the network-like support has a mean film thickness of 10-30 µm, a basis weight of…",
  "path": "/patents/1077256",
  "publishedAt": "2005-06-08T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M10/052",
    "TEIJIN LTD [JP]"
  ],
  "textContent": "A non-aqueous secondary battery separator composed of a porous film made of an organic polymer, which includes a network-like support, swells in the electrolyte solution and retains the electrolyte solution, wherein the network-like support has a mean film thickness of 10-30 µm, a basis weight of 6-20 g/m, a Gurley value of no greater than 10 sec/100 cc, a McMullin number (25°C) of no greater than 10 and a (McMullin number x mean film thickness (µm)) product of no greater than 200 µm, and the separator has a mean film thickness of 10-35 µm, a basis weight of 10-25 g/mand a Gurley value of no greater than 60 sec/100 cc, or exceeding 60 sec/100 cc and no greater than 500 sec/100 cc. Both battery characteristics and safety are achieved by establishing a specific electrochemical relationship between the effective active substance content of the battery system and the overcharge-preventing function characteristic values.",
  "title": "NON-AQUEOUS SECONDARY BATTERY AND SEPARATOR USED THEREFOR"
}