{
  "$type": "site.standard.document",
  "coverImage": {
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  "description": "An object of the present invention is to provide a lithium metal composite oxide, when used as a positive electrode active material for a lithium secondary battery, capable of obtaining a lithium secondary battery having a high cycle retention rate, and a positive electrode active material for a…",
  "path": "/patents/1433806",
  "publishedAt": "2026-06-30T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M4/525",
    "SUMITOMO METAL MINING CO., LTD."
  ],
  "textContent": "An object of the present invention is to provide a lithium metal composite oxide, when used as a positive electrode active material for a lithium secondary battery, capable of obtaining a lithium secondary battery having a high cycle retention rate, and a positive electrode active material for a lithium secondary battery, a positive electrode for a lithium secondary battery, and a lithium secondary battery in which the lithium metal composite oxide is used. This lithium metal composite oxide is a particulate lithium metal composite oxide, comprising first particles having a particle diameter equal to or less than a 50% cumulative volume particle size Dof the lithium metal composite oxide and second particles having a particle diameter exceeding the D, in which the Dis 2 to 20 μm, an average particle strength Pof the first particles is larger than an average particle strength Pof the second particles, and a standard deviation σof the particle strength of the first particles is larger than a standard deviation σof the particle strength of the second particles.",
  "title": "Lithium metal composite oxide, positive electrode active material for lithium secondary battery, positive electrode for lithium secondary battery, and lithium secondary battery"
}