{
  "$type": "site.standard.document",
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  "description": "A secondary battery with high capacity and a high level of safety is provided. The battery includes a positive electrode including a positive electrode active material and a conductive material. The positive electrode active material contains cobalt, oxygen, magnesium, and nickel. A median diameter…",
  "path": "/patents/1379408",
  "publishedAt": "2026-03-12T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M4/525",
    "SEMICONDUCTOR ENERGY LABORATORY CO., LTD."
  ],
  "textContent": "A secondary battery with high capacity and a high level of safety is provided. The battery includes a positive electrode including a positive electrode active material and a conductive material. The positive electrode active material contains cobalt, oxygen, magnesium, and nickel. A median diameter of the positive electrode active material is greater than or equal to 1 μm and less than or equal to 12 μm. In EDX line analysis in a depth direction on a region of the positive electrode active material having a plane other than a (001) plane, a distribution of the magnesium partly overlaps with a distribution of the nickel. The conductive material adheres to part of the plane other than the (001) plane of the positive electrode active material.",
  "title": "BATTERY, ELECTRONIC DEVICE, AND VEHICLE"
}