{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
    "ref": {
      "$link": "bafkreiaamtzffctfwip62qh7t5idoqdvjh7fvcn2y3uhma7xg7wkax4y74"
    },
    "mimeType": "image/png",
    "size": 117261
  },
  "description": "The present application discloses a positive electrode active material and a preparation method thereof, a positive electrode plate, a lithium-ion secondary battery and a battery module, a battery pack and an apparatus related thereto. The positive electrode active material includes a lithium…",
  "path": "/patents/1413183",
  "publishedAt": "2025-08-20T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "C01G53/42",
    "CONTEMPORARY AMPEREX TECHNOLOGY CO LTD [CN]"
  ],
  "textContent": "The present application discloses a positive electrode active material and a preparation method thereof, a positive electrode plate, a lithium-ion secondary battery and a battery module, a battery pack and an apparatus related thereto. The positive electrode active material includes a lithium nickel cobalt manganese oxide, the molar content of nickel in the lithium nickel cobalt manganese oxide accounts for 60% - 90% of the total molar content of nickel, cobalt and manganese, and the lithium nickel cobalt manganese oxide has a layered crystal structure of a space group R 3m; a transition metal layer of the lithium nickel cobalt manganese oxide includes a doping element, and the local mass concentration of the doping element in particles of the positive electrode active material has a relative deviation of 20% or less; and in a differential scanning calorimetry spectrum of the positive electrode active material in a 78% delithiation state, an initial exothermic temperature of a main exothermic peak is 200°C or more, and an integral area of the main exothermic peak is 100 J/g or less.",
  "title": "POSITIVE ELECTRODE ACTIVE MATERIAL, PREPARATION METHOD THEREFOR, POSITIVE ELECTRODE SHEET, LITHIUM ION SECONDARY BATTERY AND RELATED BATTERY MODULE, BATTERY PACK AND DEVICE THEREOF"
}