{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
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  "description": "In this nonaqueous electrolyte secondary battery, a negative electrode mixture layer has a first layer and a second layer formed in that order from the side of a negative electrode current collector. The first layer includes a first carbon-base active material with a 10% proof stress of less than…",
  "path": "/patents/1428165",
  "publishedAt": "2026-03-04T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M10/0525",
    "PANASONIC CORP [JP]"
  ],
  "textContent": "In this nonaqueous electrolyte secondary battery, a negative electrode mixture layer has a first layer and a second layer formed in that order from the side of a negative electrode current collector. The first layer includes a first carbon-base active material with a 10% proof stress of less than or equal to 3 MPa, and a silicon-base active material containing Si. The second layer contains a second carbon-base active material with a 10% proof stress of greater than or equal to 5 MPa, and has a lower content ratio (mass ratio) of the silicon-base active material than the first layer.",
  "title": "NEGATIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY"
}