{
  "$type": "site.standard.document",
  "description": "Provided is a positive active material for a lithium secondary battery or a lithium secondary battery using the positive active material, in which the positive active material includes a lithium transition metal composite oxide having an ±-NaFeO 2 -type crystal structure and represented by the…",
  "path": "/patents/980404",
  "publishedAt": "2013-12-25T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "C01G53/50",
    "GS YUASA INT LTD [JP]"
  ],
  "textContent": "Provided is a positive active material for a lithium secondary battery or a lithium secondary battery using the positive active material, in which the positive active material includes a lithium transition metal composite oxide having an ±-NaFeO 2 -type crystal structure and represented by the composition formula of Li 1+± Me 1-± O 2 (Me is a transition metal including Co, Ni and Mn and ± > 0). The positive active material contains Na in an amount of 900 ppm or more and 16000 ppm or less, or K in an amount of 1200 ppm or more and 18000 ppm or less. Also provided is a method for production of the positive active material for a lithium secondary battery. In a sintering step, to a carbonate precursor containing Na or K and represented by MeCO 3 (Me is a transition metal including Co, Ni and Mn) are added a sodium compound or a potassium compound together with a lithium compound.",
  "title": "Positive active material for lithium secondary battery, precursor of positive active material, electrode for lithium secondary battery and lithium secondary battery"
}