{
  "$type": "site.standard.document",
  "description": "A positive electrode active material for a secondary lithium battery, a method of preparing the same, and a lithium battery using the nickel-based positive electrode active material, wherein said positive electrode active material comprises a lithium nickel complex oxide material having a surface…",
  "path": "/patents/1006279",
  "publishedAt": "2012-01-11T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "C01G53/50",
    "SAMSUNG SDI CO LTD [KR]"
  ],
  "textContent": "A positive electrode active material for a secondary lithium battery, a method of preparing the same, and a lithium battery using the nickel-based positive electrode active material, wherein said positive electrode active material comprises a lithium nickel complex oxide material having a surface portion and a core portion, in which lithium ions are distributed in a concentration gradient decreasing from the surface portion to the core portion of the lithium nickel complex oxide material.",
  "title": "Nickel-based positive electrode active material, method of preparing the same, and lithium battery using the nickel-based positive electrode active material"
}