{
  "$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 has a layer structure represented by the compositional formula: Li x (Ni y M 1-y )O z…",
  "path": "/patents/994116",
  "publishedAt": "2013-01-09T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M10/0525",
    "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 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 0.6 to 0.65, and z denotes a number of 1.8 to 2.4). When 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 4.3V, and then 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) is used based on 1.0 mg of the positive electrode mix to measure the obtained lithium ion battery by differential scanning calorimetry (DSC) performed at a temperature rise rate of 5°C/min, a difference ”T = T1 - T2 between a first exothermic peak temperature T1 (°C) and a temperature T2 at which an exothermic strength is 1/2 of the first exothermic peak strength (T2 < T1) satisfies the equation: ”T ‰¥ 10 (°C).",
  "title": "POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM-ION BATTERIES, POSITIVE ELECTRODE FOR LITHIUM-ION BATTERIES, AND LITHIUM-ION BATTERY"
}