{
  "$type": "site.standard.document",
  "coverImage": {
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  "description": "A negative electrode material for a lithium-ion secondary battery is disclosed which contains a mass of graphite particle spherical aggregates in which a plurality of flat graphite particles are aggregated. The mass of the graphite particle spherical aggregates has an average circularity, D/D, and…",
  "path": "/patents/1281776",
  "publishedAt": "2021-01-21T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M4/133",
    "TOKAI CARBON CO., LTD."
  ],
  "textContent": "A negative electrode material for a lithium-ion secondary battery is disclosed which contains a mass of graphite particle spherical aggregates in which a plurality of flat graphite particles are aggregated. The mass of the graphite particle spherical aggregates has an average circularity, D/D, and a crystallite size Lc (004) within a predetermined range, and the proportion of the graphite particle spherical aggregates in which the largest flat graphite particle observed on the outermost surface has a circle equivalent diameter of 2 μm to 12 μm in graphite particle spherical aggregates having a circle equivalent diameter of 10 μm or more when observed by SEM is 80% or more.",
  "title": "NEGATIVE ELECTRODE MATERIAL FOR LITHIUM-ION SECONDARY BATTERY AND METHOD FOR PRODUCING NEGATIVE ELECTRODE MATERIAL FOR LITHIUM-ION SECONDARY BATTERY"
}