{
  "$type": "site.standard.document",
  "description": "A lithium ion secondary battery and a method for preparing the same are provided. The lithium ion secondary battery includes a positive electrode having a positive active material represented by Formula (1), a negative electrode and an electrolyte, wherein the positive active material is activated…",
  "path": "/patents/983557",
  "publishedAt": "2013-10-09T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M10/0525",
    "SAMSUNG CORNING PREC MAT CO [KR]"
  ],
  "textContent": "A lithium ion secondary battery and a method for preparing the same are provided. The lithium ion secondary battery includes a positive electrode having a positive active material represented by Formula (1), a negative electrode and an electrolyte, wherein the positive active material is activated by performing a first charge operation with a voltage ranging from 4.5 V to 4.7 V and the voltage is then reduced to less than 4.5 V: aLi 2 MnO 3 -(1-a)LiMO 2 (1) where M is at least one selected from the group consisting of Ni, Co and Mn, and 0",
  "title": "Lithium ion secondary battery and method for preparing the same"
}