{
  "$type": "site.standard.document",
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  "description": "A positive electrode active material and a preparation method thereof, a positive electrode plate, a lithium-ion secondary battery (5), and a battery module (4), a battery pack (1), and apparatus containing the lithium-ion secondary battery (5) are provided. The positive electrode active material…",
  "path": "/patents/1413679",
  "publishedAt": "2025-02-12T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "C01G53/50",
    "CONTEMPORARY AMPEREX TECHNOLOGY CO LTD [CN]"
  ],
  "textContent": "A positive electrode active material and a preparation method thereof, a positive electrode plate, a lithium-ion secondary battery (5), and a battery module (4), a battery pack (1), and apparatus containing the lithium-ion secondary battery (5) are provided. The positive electrode active material includes secondary particles formed by agglomeration of primary particles, where the primary particles include a layered nickel-containing lithium composite oxide, and the nickel-containing lithium composite oxide includes a doping element; and when the positive electrode active material is charged from an 11% delithiated state to a 78% delithiated state at a rate of 0.1C, a lattice of the primary particles has a maximum shrinkage rate satisfying Δa ≤ 3.00% in an a-axis direction, and a maximum swelling rate satisfying Δc ≤ 3.02% in a c-axis direction.",
  "title": "POSITIVE ELECTRODE ACTIVE MATERIAL, PREPARATION METHOD THEREFOR, POSITIVE ELECTRODE PLATE, LITHIUM ION SECONDARY BATTERY, AND BATTERY MODULE, BATTERY PACK AND DEVICE COMPRISING LITHIUM ION SECONDARY BATTERY"
}