{
  "$type": "site.standard.document",
  "description": "A positive electrode active material for a lithium-ion secondary battery containing secondary particles in which a plurality of primary particles are aggregated with each other contains a lithium-transition metal complex oxide having a layered rock-salt type structure. In a crystal structure of the…",
  "path": "/patents/1390451",
  "publishedAt": "2026-06-10T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "C01G53/00",
    "SUMITOMO METAL MINING CO [JP]"
  ],
  "textContent": "A positive electrode active material for a lithium-ion secondary battery containing secondary particles in which a plurality of primary particles are aggregated with each other contains a lithium-transition metal complex oxide having a layered rock-salt type structure. In a crystal structure of the lithium-transition metal complex oxide, a percentage of an element other than Li occupying an Li site (3b site) is 2% or more and 8% or less. A composition of the lithium-transition metal complex oxide is represented by general formula (1) below: General formula (1): LiNiO (where 0.02≤x≤0.08 and -0.1≤α≤0.1).",
  "title": "POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERIES, METHOD FOR PRODUCING POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERIES, AND LITHIUM ION SECONDARY BATTERY"
}