{
  "$type": "site.standard.document",
  "description": "The present invention relates to a positive electrode active material including a lithium composite transition metal oxide in the form of a single particle composed of one nodule or a pseudo-single particle, which is a composite of 30 or fewer nodules, and a coating layer including a first coating…",
  "path": "/patents/1427383",
  "publishedAt": "2026-06-24T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "C01G53/50",
    "LG ENERGY SOLUTION LTD [KR]"
  ],
  "textContent": "The present invention relates to a positive electrode active material including a lithium composite transition metal oxide in the form of a single particle composed of one nodule or a pseudo-single particle, which is a composite of 30 or fewer nodules, and a coating layer including a first coating layer formed on the surface of the lithium composite transition metal oxide and a second coating layer formed on the surface of the first coating layer, wherein the lithium composite transition metal oxide has a roundness, which is defined by Equation 1 below, of 0.50 to 0.68, and the second coating layer contains boron, wherein the boron is included in a weight of 300 ppm to 2400 ppm based on the total weight of the positive electrode active material. Roundness=4×Area/π×R2In Equation 1 above, R denotes the length of a major axis passing through the center of the lithium composite transition metal oxide, and Area denotes an actual area of the lithium composite transition metal oxide.",
  "title": "CATHODE ACTIVE MATERIAL, AND CATHODE AND LITHIUM SECONDARY BATTERY COMPRISING SAME"
}