{
  "$type": "site.standard.document",
  "coverImage": {
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  "description": "The purpose of the present disclosure is to provide a nonaqueous electrolyte secondary battery which is provided with a negative electrode mixture layer that exhibits excellent electrolyte absorbing properties. A nonaqueous electrolyte secondary battery according to one embodiment of the present…",
  "path": "/patents/1322064",
  "publishedAt": "2022-07-07T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M4/583",
    "SANYO Electric Co., Ltd."
  ],
  "textContent": "The purpose of the present disclosure is to provide a nonaqueous electrolyte secondary battery which is provided with a negative electrode mixture layer that exhibits excellent electrolyte absorbing properties. A nonaqueous electrolyte secondary battery according to one embodiment of the present disclosure is characterized by being provided with a negative electrode having a negative electrode collector and a negative electrode mixture layer that is provided on the surface of the negative electrode collector, and is also characterized in that: the negative electrode mixture layer contains graphite particles A and graphite particles B, which serve as a negative electrode active material, and a rubber binder which serves as a binding agent; the graphite particles A have an internal void fraction of 5% or less; the graphite particles B have an internal void fraction of from 8% to 20%; if the negative electrode mixture layer is divided into two halves in the thickness direction, the outer surface-side half contains more graphite particles A than the negative electrode collector-side half; and from 90% to 100% of the all rubber binder contained in the negative electrode mixture layer is contained in the negative electrode collector-side half.",
  "title": "NONAQUEOUS ELECTROLYTE SECONDARY BATTERY"
}