{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
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  "description": "This application provides a negative electrode plate, a secondary battery (5), a battery module (4), a battery pack (1), and an apparatus. The negative electrode plate includes a negative current collector and a plurality of active substance layers on the negative current collector. The plurality…",
  "path": "/patents/1427762",
  "publishedAt": "2024-05-22T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M10/0525",
    "CONTEMPORARY AMPEREX TECHNOLOGY CO LTD [CN]"
  ],
  "textContent": "This application provides a negative electrode plate, a secondary battery (5), a battery module (4), a battery pack (1), and an apparatus. The negative electrode plate includes a negative current collector and a plurality of active substance layers on the negative current collector. The plurality of active substance layers include at least a first active substance layer and a second active substance layer. The first active substance layer includes a first negative active substance, and the second active substance layer includes a second negative active substance. A ratio of gram capacity of the negative active substance of the first active substance layer to thickness of the first active substance layer is 3.5-10.0. Aratio of gram capacity of the negative active substance of the second active substance layer to thickness of the second active substance layer is 6.5-23.0.",
  "title": "NEGATIVE ELECTRODE PIECE, SECONDARY BATTERY, BATTERY MODULE, BATTERY PACK AND DEVICE"
}