{
  "$type": "site.standard.document",
  "description": "To provide a cathode active material capable of reducing cathode resistance of a secondary battery by enhancing electron conductivity thereof without reducing discharge capacity of the secondary battery. Lanthanum compound particles each having a perovskite-type structure are dispersed on surfaces…",
  "path": "/patents/1301373",
  "publishedAt": "2021-09-30T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M4/525",
    "SUMITOMO METAL MINING CO., LTD."
  ],
  "textContent": "To provide a cathode active material capable of reducing cathode resistance of a secondary battery by enhancing electron conductivity thereof without reducing discharge capacity of the secondary battery. Lanthanum compound particles each having a perovskite-type structure are dispersed on surfaces of secondary particles of a lithium transition metal-containing composite oxide and/or in gaps or grain boundaries between primary particles thereof. The lanthanum compound particles have a cross-sectional average particle size of 0.70 μm or less. The number of lanthanum compound particles present per unit area of the cross sections of the secondary particles is 0.03 particles/μmto 0.10 particles/μm, and the number of lanthanum compound particles present per unit area of the surfaces of the secondary particles is 0.01 particles/mμto 0.25 particles/μm. The content of lanthanum with respect to the entire cathode active material is within a range of 0.1% by mass to 5% by mass.",
  "title": "CATHODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERY AND LITHIUM ION SECONDARY BATTERY"
}