{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
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  "description": "The present invention provides a positive electrode active material which has improved capacity retention rate at room temperature. A negative electrode contained in a nonaqueous electrolyte secondary battery according to the present invention contains a negative electrode active material and a…",
  "path": "/patents/1423422",
  "publishedAt": "2026-06-18T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M4/62",
    "Panasonic Intellectual Property Management Co., Ltd."
  ],
  "textContent": "The present invention provides a positive electrode active material which has improved capacity retention rate at room temperature. A negative electrode contained in a nonaqueous electrolyte secondary battery according to the present invention contains a negative electrode active material and a lithium sulfonate salt represented by general formula (I); and the particle diameter of the lithium sulfonate salt is 1 nm to 1,000 nm. (In the formula, R presents an n-valent aliphatic hydrocarbon group having 1 to 5 carbon atoms; and n represents 1 or 2.)",
  "title": "NEGATIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY"
}