{
  "$type": "site.standard.document",
  "coverImage": {
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  "description": "An object is to provide a positive electrode active material having improved charging and discharging cycle characteristics in an all-solid-state battery. A positive electrode active material for an all-solid-state lithium ion secondary battery, including: lithium-nickel composite oxide particles…",
  "path": "/patents/1423410",
  "publishedAt": "2026-06-18T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M4/525",
    "SUMITOMO METAL MINING CO., LTD."
  ],
  "textContent": "An object is to provide a positive electrode active material having improved charging and discharging cycle characteristics in an all-solid-state battery. A positive electrode active material for an all-solid-state lithium ion secondary battery, including: lithium-nickel composite oxide particles; and coating layers, wherein the lithium-nickel composite oxide particles have a crystal structure belonging to a space group R-m, and contain Li, Ni, Mn, and an element M, a mole number ratio among elements being represented by Li:Ni:Mn:M=a:(1−x−y):x:y (0.95≤a≤1.10, 0",
  "title": "POSITIVE ELECTRODE ACTIVE MATERIAL FOR ALL-SOLID-STATE LITHIUM ION SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME"
}