{
  "$type": "site.standard.document",
  "description": "An energy storage device 10 comprises a positive electrode 410, a negative electrode 420, and a separator 430 arranged between the positive electrode 410 and the negative electrode 420, wherein the negative electrode 420 has a negative substrate layer 421, and a negative composite layer 422…",
  "path": "/patents/948046",
  "publishedAt": "2015-12-02T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M10/0525",
    "GS YUASA INT LTD [JP]"
  ],
  "textContent": "An energy storage device 10 comprises a positive electrode 410, a negative electrode 420, and a separator 430 arranged between the positive electrode 410 and the negative electrode 420, wherein the negative electrode 420 has a negative substrate layer 421, and a negative composite layer 422 arranged on the surface of the negative substrate layer 421, the separator 430 has a separator substrate layer 431, the negative composite layer 422 contains a non-graphitizable carbon having a particle diameter D50 of 2.0 µm or more and 6.0 µm or less as a negative active material, and a corrected negative electrode density, which is defined as a value obtained by dividing, by a thickness of the separator substrate layer 431, a value obtained by multiplying a density of the negative composite layer 422 by a thickness of the negative composite layer 422, is 1.2 (g/cm) or more and 5.1 (g/cm) or less.",
  "title": "Energy storage device, energy storage apparatus, vehicle, and method for using energy storage device"
}