{
  "$type": "site.standard.document",
  "description": "A secondary battery comprises an electrode assembly comprising radical units in which first and second electrodes are alternately laminated with a separator therebetween and a separation film surrounding the radical units to be repeatedly laminated, wherein the electrode assembly comprises a…",
  "path": "/patents/1311163",
  "publishedAt": "2022-02-17T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M50/10",
    "LG Chem, Ltd."
  ],
  "textContent": "A secondary battery comprises an electrode assembly comprising radical units in which first and second electrodes are alternately laminated with a separator therebetween and a separation film surrounding the radical units to be repeatedly laminated, wherein the electrode assembly comprises a protection unit laminated on an outermost separation film disposed on the uppermost end or lowermost end of the separation film, the protection unit has a structure comprising a second protection electrode, a separator, and a first protection electrode which are successively laminated from the outermost separation film disposed on the uppermost end or lowermost end of the electrode assembly, the second protection electrode has a cross-sectional coating structure comprising a second collector and a second electrode active material portion coated with a second electrode active material on an inner surface of the second collector, and the inner surface is a surface facing a center of the electrode assembly.",
  "title": "Secondary Battery"
}