{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
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  "description": "The non-aqueous secondary battery of the present invention includes a positive electrode, a negative electrode, a non-aqueous electrolyte, and a separator, the negative electrode contains a negative electrode active material containing a graphitic carbon material and a composite in which a carbon…",
  "path": "/patents/988451",
  "publishedAt": "2013-07-24T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "C01B33/113",
    "HITACHI MAXELL [JP]"
  ],
  "textContent": "The non-aqueous secondary battery of the present invention includes a positive electrode, a negative electrode, a non-aqueous electrolyte, and a separator, the negative electrode contains a negative electrode active material containing a graphitic carbon material and a composite in which a carbon coating layer is formed on a surface of a core material containing Si and O as constituent elements, the composite has a carbon content of 10 to 30 mass%, the composite has an intensity ratio I 510 /I 1343 of a peak intensity I 510 at 510 cm -1 derived from Si to a peak intensity I 1343 at 1343 cm -1 derived from carbon of 0.25 or less when a Raman spectrum of the composite is measured at a laser wavelength of 532 nm, and the half-width of the (111) diffraction peak of Si is less than 3.0° when the crystallite size of an Si phase contained in the core material is measured by X-ray diffractometry using CuK± radiation.",
  "title": "NONAQUEOUS SECONDARY CELL"
}