{
  "$type": "site.standard.document",
  "description": "A secondary battery includes a positive electrode, a negative electrode, and an electrolytic solution. The negative electrode includes a film covering a negative electrode active material layer. The electrolytic solution includes a chain carboxylic acid ester. According to an analysis of the film…",
  "path": "/patents/1341572",
  "publishedAt": "2023-04-13T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M10/0567",
    "MURATA MANUFACTURING CO., LTD."
  ],
  "textContent": "A secondary battery includes a positive electrode, a negative electrode, and an electrolytic solution. The negative electrode includes a film covering a negative electrode active material layer. The electrolytic solution includes a chain carboxylic acid ester. According to an analysis of the film by inductively coupled plasma optical emission spectroscopy, a content of boron in the film is greater than or equal to 10 μmol/mand less than or equal to 30 μmol/m, a content of sulfur in the film is greater than or equal to 20 μmol/mand less than or equal to 70 μmol/m, and a ratio of the content of sulfur to the content of boron is greater than or equal to 1.0 and less than or equal to 3.0.",
  "title": "SECONDARY BATTERY"
}