{
  "$type": "site.standard.document",
  "description": "Provided is a positive electrode material for a lithium ion secondary battery, including aggregated particles including aggregated multiple primary particles of a positive electrode active substance containing lithium iron phosphate coated with a carbonaceous film, the positive electrode active…",
  "path": "/patents/1381421",
  "publishedAt": "2026-04-23T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M4/366",
    "SUMITOMO METAL MINING CO., LTD."
  ],
  "textContent": "Provided is a positive electrode material for a lithium ion secondary battery, including aggregated particles including aggregated multiple primary particles of a positive electrode active substance containing lithium iron phosphate coated with a carbonaceous film, the positive electrode active substance having a prescribed composition containing lithium iron phosphate, the positive electrode material having a change rate of a lattice area of a b-c axis plane before charging and after full charging (((lattice area before charging-lattice area after full charging)/lattice area before charging)×100) of 1.10% or more and 1.33% or less. The positive electrode material has excellent cycle characteristics and high input and output characteristics in using as a positive electrode of a lithium ion secondary battery.",
  "title": "LITHIUM-ION SECONDARY BATTERY POSITIVE ELECTRODE MATERIAL AND METHOD FOR MANUFACTURING SAME, LITHIUM-ION SECONDARY BATTERY POSITIVE ELECTRODE, AND LITHIUM-ION SECONDARY BATTERY"
}