{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
    "ref": {
      "$link": "bafkreiebc2jdjsckjo5zpyqwxhg3cavoforzev5x4ofwjwzao7wjkl4ngu"
    },
    "mimeType": "image/png",
    "size": 112790
  },
  "description": "The present invention relates to a negative electrode active material for a secondary battery and a manufacturing method thereof. A negative electrode active material, according to one embodiment of the present invention, comprises silicon-based primary particles, and a particle size distribution…",
  "path": "/patents/1343803",
  "publishedAt": "2023-05-18T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M4/386",
    "NEXEON LTD."
  ],
  "textContent": "The present invention relates to a negative electrode active material for a secondary battery and a manufacturing method thereof. A negative electrode active material, according to one embodiment of the present invention, comprises silicon-based primary particles, and a particle size distribution of the silicon-based primary particles is D10≥50 nm and D90≤150 nm. The negative electrode active material suppresses or reduces tensile hoop stress generated in lithiated silicon particles during a charging of a battery to thus suppress a crack due to a volume expansion of the silicon particles and/or an irreversible reaction caused by the crack, such that the lifetime and capacity of the battery can be improved.",
  "title": "NEGATIVE ELECTRODE ACTIVE MATERIAL FOR SECONDARY BATTERY AND MANUFACTURING METHOD THEREOF"
}