{
  "$type": "site.standard.document",
  "description": "A purpose of the present invention is to provide a lithium ion secondary battery having more improved life characteristics while suppressing gelation of an electrode mixture slurry in a manufacturing process. The lithium ion secondary battery according to the present invention comprises a positive…",
  "path": "/patents/1274587",
  "publishedAt": "2020-10-15T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M4/525",
    "NEC CORPORATION"
  ],
  "textContent": "A purpose of the present invention is to provide a lithium ion secondary battery having more improved life characteristics while suppressing gelation of an electrode mixture slurry in a manufacturing process. The lithium ion secondary battery according to the present invention comprises a positive electrode having a positive electrode mixture layer comprising a layered lithium-nickel composite oxide in which a proportion of nickel in metals other than lithium is 80 mol % or more; LiOH; LiCO; and a chlorine-containing polyvinylidene fluoride-based polymer, wherein a content of LiOH in the positive electrode mixture layer and a content of LiCOin the positive electrode mixture layer are each 0.1 weight % or more and 2.1 weight % or less, a total content of LiOH and LiCOin the positive electrode mixture layer is 0.2 weight % or more and 4.2 weight % or less, and a content of chlorine in the positive electrode mixture layer is 30 μg/g or more and 120 μg/g or less.",
  "title": "LITHIUM ION SECONDARY BATTERY"
}