{
  "$type": "site.standard.document",
  "description": "A preparation method of soft carbon comprises heating heavy oil to raw coke under a condition of 480°C-550°C, heating the raw coke to 850°C-900°C at a first heating rate of 3°C/min to 5°C/min and holding the temperature for 4 hours or more to obtain a carbon-containing material, grinding and…",
  "path": "/patents/1388908",
  "publishedAt": "2025-08-06T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "C01B32/00",
    "CPC CORP TAIWAN [TW]"
  ],
  "textContent": "A preparation method of soft carbon comprises heating heavy oil to raw coke under a condition of 480°C-550°C, heating the raw coke to 850°C-900°C at a first heating rate of 3°C/min to 5°C/min and holding the temperature for 4 hours or more to obtain a carbon-containing material, grinding and grading the carbon-containing material to obtain a carbon-containing powder, heating the carbon-containing powder to 1030°C-1220°C at a second heating rate of 3°C/min to 10°C/min and holding the temperature for 4 hours or more to obtain a carbon material powder,; and adding pitch to the carbon material powder, and then heating it to 1030°C-1220°C at a third heating rate of 0.90°C/min to 1.25°C/min and holding the temperature for 5 hours or more to obtain soft carbon.",
  "title": "PREPARATION METHOD OF SOFT CARBON AND LITHIUM-ION SECONDARY BATTERY"
}