{
  "$type": "site.standard.document",
  "description": "A positive electrode active material includes positive electrode active material particles containing a composite oxide having a hexagonal crystal structure. The composite oxide includes Li, Co, and at least one element M1 selected from the group consisting of Ni, Fe, Pb, Mg, Al, K, Na, Ca, Si, Ti…",
  "path": "/patents/1422707",
  "publishedAt": "2024-09-18T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "C01G51/42",
    "MURATA MANUFACTURING CO [JP]"
  ],
  "textContent": "A positive electrode active material includes positive electrode active material particles containing a composite oxide having a hexagonal crystal structure. The composite oxide includes Li, Co, and at least one element M1 selected from the group consisting of Ni, Fe, Pb, Mg, Al, K, Na, Ca, Si, Ti, Sn, V, Ge, Ga, B, As, Zr, Mn and Cr, and the at least one element M1 is present on a surface of the positive electrode active material particles. An atomic ratio (total amount of at least one M1/Co amount) of an amount of Co on the surface of the positive electrode active material particles and a total amount of the at least one element M1 is 0.6 or more and 1.3 or less. A half-value width of a peak of an A1g vibration mode of the hexagonal crystal structure in a Raman spectrum is 10 cm-1 or more and 17 cm-1 or less. A peak intensity ratio IA1g-H/IEg of a peak intensity IA1g-H of the A1g vibration mode of the hexagonal crystal structure in the Raman spectrum and a peak intensity IEg of an Eg vibration mode of the hexagonal crystal structure is 1.1 or more and 1.9 or less.",
  "title": "POSITIVE ELECTRODE ACTIVE MATERIAL AND BATTERY"
}