{
  "$type": "site.standard.document",
  "description": "Provided is a negative electrode active material for a lithium-ion secondary battery, comprising SiO x that has an intensity ratio A 1 /A 2 of 0.1 or less in spectra measured by a Fourier transform infrared spectrometer after subjecting the SiO x to evacuation treatment at 200°C, given that A 1…",
  "path": "/patents/998969",
  "publishedAt": "2012-08-29T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "C01B33/113",
    "OSAKA TITANIUM TECHNOLOGIES CO [JP]"
  ],
  "textContent": "Provided is a negative electrode active material for a lithium-ion secondary battery, comprising SiO x that has an intensity ratio A 1 /A 2 of 0.1 or less in spectra measured by a Fourier transform infrared spectrometer after subjecting the SiO x to evacuation treatment at 200°C, given that A 1 designates an intensity of a silanol group-derived peak which appears around 3400 to 3800 cm -1 , and A 2 designates an intensity of a siloxane bond-derived peak which appears around 1000 to 1200 cm -1 . It is preferred that x in the SiO x satisfies x",
  "title": "NEGATIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERY"
}