{
  "$type": "site.standard.document",
  "description": "A positive electrode active material includes: a first positive electrode active material including a lithium nickel-manganese composite oxide having a nickel content of at least about 60 mol% based on a total metal excluding lithium and being in a form of secondary particles each including a…",
  "path": "/patents/1387089",
  "publishedAt": "2026-04-22T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "C01G53/50",
    "SAMSUNG SDI CO LTD [KR]"
  ],
  "textContent": "A positive electrode active material includes: a first positive electrode active material including a lithium nickel-manganese composite oxide having a nickel content of at least about 60 mol% based on a total metal excluding lithium and being in a form of secondary particles each including a plurality of primary particles; and a second positive electrode active material including a lithium nickel-manganese-based composite oxide having a nickel content of at least about 60 mol% based on a total metal excluding lithium and being in a form of single particles and a coating layer on the surface of the single particle and containing aluminium and yttrium, an aluminium content of the coating layer being about 0.1 mol% to about 2 mol% and an yttrium content of the coating layer being about 0.1 mol% to about 1 mol%, based on a total metal excluding lithium in the second positive electrode active material.",
  "title": "POSITIVE ELECTRODE ACTIVE MATERIAL, POSITIVE ELECTRODE, AND RECHARGEABLE LITHIUM BATTERIES"
}