{
  "$type": "site.standard.document",
  "coverImage": {
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  "description": "A lithium secondary battery has a positive electrode, a negative electrode, an electrolyte solution, and a separator. The negative electrode is operated by dissolution and precipitation of metallic lithium, and the electrolyte solution contains a nonaqueous solvent and a lithium salt and has a…",
  "path": "/patents/1435220",
  "publishedAt": "2026-07-02T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M10/0568",
    "TEIJIN LIMITED"
  ],
  "textContent": "A lithium secondary battery has a positive electrode, a negative electrode, an electrolyte solution, and a separator. The negative electrode is operated by dissolution and precipitation of metallic lithium, and the electrolyte solution contains a nonaqueous solvent and a lithium salt and has a lithium salt concentration of 3.0 mol/L or more. The separator has a polyolefin microporous film and a porous layer provided on one side or both sides of the polyolefin microporous film and containing a wholly aromatic polyamide.",
  "title": "LITHIUM SECONDARY BATTERY"
}