{
  "$type": "site.standard.document",
  "description": "According to the present invention, a negative electrode of a wound electrode body has a non-facing part which is wound 1.25 turns or more without facing a positive electrode from a facing part that faces the inner winding surface of a leading end of the positive electrode in the winding direction…",
  "path": "/patents/1426681",
  "publishedAt": "2026-06-25T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M10/0525",
    "Panasonic Energy Co., Ltd."
  ],
  "textContent": "According to the present invention, a negative electrode of a wound electrode body has a non-facing part which is wound 1.25 turns or more without facing a positive electrode from a facing part that faces the inner winding surface of a leading end of the positive electrode in the winding direction toward the winding start side. The non-facing part has, sequentially from the facing part toward the winding start side, a first negative electrode mixture layer formed part where a negative electrode mixture layer is provided on at least one surface of a negative electrode core body, a first negative electrode core body exposed part where the negative electrode core body is exposed, and a second negative electrode mixture layer formed part where the negative electrode mixture layer is provided on at least one surface of the negative electrode core body.",
  "title": "CYLINDRICAL NONAQUEOUS ELECTROLYTE SECONDARY BATTERY"
}