{
  "$type": "site.standard.document",
  "description": "A negative electrode material for a secondary battery includes a matrix containing silicon oxide, a composite oxide of one or more doping elements selected from the group consisting of an alkali metal, an alkaline earth metal, and a post-transition metal, and silicon, or a mixture thereof; and…",
  "path": "/patents/1336757",
  "publishedAt": "2023-02-02T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M4/48",
    "Tera Technos Co, Ltd."
  ],
  "textContent": "A negative electrode material for a secondary battery includes a matrix containing silicon oxide, a composite oxide of one or more doping elements selected from the group consisting of an alkali metal, an alkaline earth metal, and a post-transition metal, and silicon, or a mixture thereof; and silicon nanoparticles dispersed and embedded in the matrix; wherein a hardness and a Young's modulus measured by a nanoindentation test are 4.0 GPa or more and 40 GPa or more, respectively, and in an X-ray diffraction pattern using a CuKα ray, a ratio (A/A) of an area (A) of a first peak present in a region where a diffraction angle θ is 10° to 27.4° to an area (A) of a second peak present in a region where the diffraction angle θ is 28±0.5° is 0.8 to 6.",
  "title": "NEGATIVE ELECTRODE MATERIAL FOR SECONDARY BATTERY"
}