{
  "$type": "site.standard.document",
  "description": "A secondary battery is provided and including a positive electrode and a negative electrode. A negative electrode includes: a negative electrode current collector; a first negative electrode layer provided on the negative electrode current collector and containing graphene; a lithium metal layer…",
  "path": "/patents/1426591",
  "publishedAt": "2026-06-25T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M4/366",
    "MURATA MANUFACTURING CO., LTD."
  ],
  "textContent": "A secondary battery is provided and including a positive electrode and a negative electrode. A negative electrode includes: a negative electrode current collector; a first negative electrode layer provided on the negative electrode current collector and containing graphene; a lithium metal layer provided on the first negative electrode layer, containing lithium metal, and not including graphene; and a second negative electrode layer provided on the lithium metal layer and containing graphene. In a state in which the potential of the negative electrode is 0 V (vs Li/Li), the first negative electrode layer includes lithium alloy particles containing lithium and a metal that forms an alloy with lithium, and a mass fraction of the lithium alloy particles in the first negative electrode layer is larger than a mass fraction of the lithium alloy particles in the second negative electrode layer.",
  "title": "SECONDARY BATTERY, NEGATIVE ELECTRODE AND METHOD FOR PRODUCING A NEGATIVE ELECTRODE"
}