{
  "$type": "site.standard.document",
  "coverImage": {
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  "description": "A positive electrode active material includes a primary particle and a coating, wherein the primary particle includes an olivine-type phosphate compound, the coating covers at least part of a surface of the primary particle, the coating includes carbon, and when a filtrate is obtained by a…",
  "path": "/patents/1423415",
  "publishedAt": "2026-06-18T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M4/5825",
    "TOYOTA JIDOSHA KABUSHIKI KAISHA"
  ],
  "textContent": "A positive electrode active material includes a primary particle and a coating, wherein the primary particle includes an olivine-type phosphate compound, the coating covers at least part of a surface of the primary particle, the coating includes carbon, and when a filtrate is obtained by a preparation method including immersing 0.5 g of the positive electrode active material in 10 g of pure water and subjecting a resulting immersed liquid to ultrasonic treatment for 10 minutes and stirring for 6 hours followed by filtration, a concentration of a transition metal element in the filtrate detected by ICP-AES is 200 ppm or less in total.",
  "title": "POSITIVE ELECTRODE ACTIVE MATERIAL, BATTERY, AND METHOD FOR PRODUCING POSITIVE ELECTRODE ACTIVE MATERIAL"
}