{
  "$type": "site.standard.document",
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  "description": "The positive active material for a lithium secondary battery 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…",
  "path": "/patents/980138",
  "publishedAt": "2014-01-01T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "C01D15/02",
    "GS YUASA INT LTD [JP]"
  ],
  "textContent": "The positive active material for a lithium secondary battery 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 no less than 1900 ppm and no more than 8000 ppm, and has a 50% particle size (D50) of 5 µm or less in particle size distribution measurement. There is provided a method for production of the positive active material, wherein a precursor for synthesis of the lithium transition metal composite oxide is a hydroxide of a transition metal including Co, Ni and Mn.",
  "title": "Positive active material for lithium secondary battery, method for production thereof, electrode for lithium secondary battery and lithium secondary battery"
}