{
  "$type": "site.standard.document",
  "description": "In a non-aqueous electrolyte secondary battery according to an embodiment, a positive electrode includes a lithium-containing transition metal composite oxide and a sulfonic acid compound present on the surface of particles of the composite oxide. The sulfonic acid compound is represented by…",
  "path": "/patents/1382747",
  "publishedAt": "2026-05-14T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M10/4235",
    "Panasonic Intellectual Property Management Co., Ltd."
  ],
  "textContent": "In a non-aqueous electrolyte secondary battery according to an embodiment, a positive electrode includes a lithium-containing transition metal composite oxide and a sulfonic acid compound present on the surface of particles of the composite oxide. The sulfonic acid compound is represented by formula (I). In the formula, A is a Group 1 or Group 2 element, R is a hydrocarbon group, and n is 1 or 2. A negative electrode includes a silicon-containing material (). The silicon-containing material () contains an ion-conducting phase () and a Si phase () dispersed in the ion-conducting phase (), and the size of the Si phase () is 110 nm or less.",
  "title": "NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY"
}