{
  "$type": "site.standard.document",
  "description": "A nonaqueous electrolyte energy storage device according to one aspect of the present invention includes: a negative electrode including a negative active material layer; and a nonaqueous electrolyte containing an unsaturated cyclic carbonate and a P—O bond-containing fluorophosphate, in which the…",
  "path": "/patents/1382310",
  "publishedAt": "2026-05-07T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M10/0568",
    "GS Yuasa International Ltd."
  ],
  "textContent": "A nonaqueous electrolyte energy storage device according to one aspect of the present invention includes: a negative electrode including a negative active material layer; and a nonaqueous electrolyte containing an unsaturated cyclic carbonate and a P—O bond-containing fluorophosphate, in which the negative active material layer has a BET specific surface area of 0.80 m/g or more and 1.5 m/g or less, and the ratio of the content of the unsaturated cyclic carbonate to the total content of the unsaturated cyclic carbonate and the P—O bond-containing fluorophosphate is 0.60 or more and less than 1.0 on a mole basis.",
  "title": "NONAQUEOUS ELECTROLYTE ENERGY STORAGE DEVICE"
}