{
  "$type": "site.standard.document",
  "description": "The present invention provides a positive electrode active material for lithium ion battery which attains a lithium ion battery having high safety. The positive electrode active material for lithium ion battery which has a layer structure represented by the compositional formula: Li x (Ni y M 1-y…",
  "path": "/patents/994153",
  "publishedAt": "2013-01-09T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "C01G53/50",
    "JX NIPPON MINING & METALS CORP [JP]"
  ],
  "textContent": "The present invention provides a positive electrode active material for lithium ion battery which attains a lithium ion battery having high safety. The positive electrode active material for lithium ion battery which has a layer structure represented by the compositional formula: Li x (Ni y M 1-y )O z (wherein M represents Mn and Co, x denotes a number of 0.9 to 1.2, y denotes a number of 0.8 ± 0.025, and z denotes a number of 1.8 to 2.4). After a lithium ion battery using a positive electrode mix produced by the positive electrode active material, a binder, and a conductive material in a ratio by weight of 91%, 4.2%, and 4.8%, respectively, is charged to 4.3 V, an accumulated calorific value in a temperature range from 170 to 300 °C, which is obtained by differential scanning calorimetry (DSC) performed at a temperature rise rate of 5°C/min using an electrolytic solution prepared by dissolving 1 M-LiPF 6 in a mixture solvent of ethylene carbonate (EC)-dimethyl carbonate (DMC) (volume ratio 1 : 1) based on 1.0 mg of the positive electrode mix, is 1.4 kJ/g or less.",
  "title": "POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM-ION BATTERIES, POSITIVE ELECTRODE FOR LITHION-ION BATTERIES, LITHIUM-ION BATTERY"
}