{
  "$type": "site.standard.document",
  "description": "A negative electrode active material of the present disclosure includes a base particle 10 including: an alkali aluminate phase 11 including at least one alkali metal element and Al; a silicon phase 12 dispersed in the alkali aluminate phase 11; and a carbon phase 13 dispersed in the alkali…",
  "path": "/patents/1390388",
  "publishedAt": "2026-06-10T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M4/36",
    "PANASONIC IP MAN CO LTD [JP]"
  ],
  "textContent": "A negative electrode active material of the present disclosure includes a base particle 10 including: an alkali aluminate phase 11 including at least one alkali metal element and Al; a silicon phase 12 dispersed in the alkali aluminate phase 11; and a carbon phase 13 dispersed in the alkali aluminate phase 11. An area ratio of the carbon phase 13 in a cross-section of a primary particle of the base particle 10 is 4% or more and 25% or less.",
  "title": "NEGATIVE ELECTRODE ACTIVE MATERIAL AND BATTERY"
}