{
  "$type": "site.standard.document",
  "description": "In a non-aqueous electrolyte secondary battery according to the present disclosure, a positive electrode comprises a lithium-containing composite oxide, and a sulfonic acid compound, and a negative electrode mixture layer of a negative electrode includes first graphite particles having an internal…",
  "path": "/patents/1380818",
  "publishedAt": "2026-04-09T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M4/628",
    "Panasonic Intellectual Property Management Co., Ltd."
  ],
  "textContent": "In a non-aqueous electrolyte secondary battery according to the present disclosure, a positive electrode comprises a lithium-containing composite oxide, and a sulfonic acid compound, and a negative electrode mixture layer of a negative electrode includes first graphite particles having an internal porosity of at most 5% and second graphite particles having an internal porosity of 8% to 20%. A thickness T of a first negative electrode mixture layer and a thickness T2 of a second negative electrode mixture layer satisfy 0.1≤TI/(T+T)≤0.9, and a ratio CI of the first graphite particles to the total mass in the first negative electrode mixture layer, and a ratio C of the first graphite particles to the total mass in the second negative electrode mixture layer satisfy C",
  "title": "NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY"
}