{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
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  "description": "The present application discloses a negative active material, a method for preparing the same, and related secondary batteries, battery modules, battery packs and apparatus. The negative active material includes a core material and a polymer-modified coating layer on at least a part of its surface…",
  "path": "/patents/1413688",
  "publishedAt": "2022-10-26T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M10/00",
    "CONTEMPORARY AMPEREX TECHNOLOGY CO LTD [CN]"
  ],
  "textContent": "The present application discloses a negative active material, a method for preparing the same, and related secondary batteries, battery modules, battery packs and apparatus. The negative active material includes a core material and a polymer-modified coating layer on at least a part of its surface; the core material includes one or more of silicon-based materials and tin-based materials; the coating layer includes sulfur element and carbon element; in the Raman spectrum of the negative active material, the negative active material has scattering peaks at the Raman shifts of 900cm-1∼960cm-1, 1300cm-1∼1380cm-1 and 1520cm-1∼1590cm-1, respectively, in which the scattering peak at the Raman shift of 900cm-1 ∼ 960cm-1 has a peak intensity recorded as I1, the scattering peak at the Raman shift of 1520cm-1 ∼ 1590cm-1 has a peak intensity recorded as IG, and I1 and IG satisfy 0.2 ≤ I1/IG ≤ 0.8.",
  "title": "NEGATIVE ACTIVE MATERIAL, METHOD FOR PREPARING THE SAME, AND RELATED SECONDARY BATTERY, BATTERY MODULE, BATTERY PACK AND APPARATUS"
}