{
  "$type": "site.standard.document",
  "coverImage": {
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  "description": "A secondary battery including a negative electrode plate. The negative electrode plate includes a negative electrode current collector and a negative electrode material layer disposed on at least one surface of the negative electrode current collector. The negative electrode material layer includes…",
  "path": "/patents/1385587",
  "publishedAt": "2026-06-04T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M4/364",
    "Ningde Amperex Technology Limited"
  ],
  "textContent": "A secondary battery including a negative electrode plate. The negative electrode plate includes a negative electrode current collector and a negative electrode material layer disposed on at least one surface of the negative electrode current collector. The negative electrode material layer includes a negative electrode active material, a binder, and a conductive agent. The negative electrode active material includes a carbon material and silicon-carbon composite particles. Based on a mass of the negative electrode material layer, a mass percentage of silicon element is 4.4% to 10.5%, and a mass percentage of carbon element is 85% to 90%. A powder conductivity of the negative electrode material layer is 8 S/m to 15 S/m.",
  "title": "SECONDARY BATTERY AND ELECTRONIC APPARATUS"
}