{
  "$type": "site.standard.document",
  "description": "A lithium ion secondary battery includes: a positive electrode 8 having a positive electrode active material layer 12 on a surface of a positive electrode collector 11; a negative electrode 9 having a negative electrode active material layer 15 on a surface of a negative electrode collector 14; and…",
  "path": "/patents/1411910",
  "publishedAt": "2025-12-03T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M10/0525",
    "MAZDA MOTOR [JP]"
  ],
  "textContent": "A lithium ion secondary battery includes: a positive electrode 8 having a positive electrode active material layer 12 on a surface of a positive electrode collector 11; a negative electrode 9 having a negative electrode active material layer 15 on a surface of a negative electrode collector 14; and a nonaqueous electrolyte 17. The positive electrode 8, the negative electrode 9, and the nonaqueous electrolyte 17 are accommodated in a battery case 4. The nonaqueous electrolyte 17 contains γ-butyrolactone as a main component of a nonaqueous solvent. A monoalkyl sulfate ion-derived coat 13 is formed on the surface of the positive electrode active material layer 12. A VC-derived coat 16 is formed on the surface of the negative electrode active material layer 15.",
  "title": "LITHIUM ION SECONDARY BATTERY AND PRODUCTION METHOD THEREOF"
}