{
  "$type": "site.standard.document",
  "description": "A positive electrode active material according to the present invention is a positive electrode active material including a lithium nickel-based oxide in the form of a single particle which is composed of one single nodule, or a pseudo-single particle which is a composite of 30 or fewer nodules…",
  "path": "/patents/1435880",
  "publishedAt": "2026-07-01T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "C01G53/00",
    "LG ENERGY SOLUTION LTD [KR]"
  ],
  "textContent": "A positive electrode active material according to the present invention is a positive electrode active material including a lithium nickel-based oxide in the form of a single particle which is composed of one single nodule, or a pseudo-single particle which is a composite of 30 or fewer nodules, wherein the lithium nickel-based oxide includes cobalt (Co) and aluminum (Al), and concentration ratios of cobalt (Co) and aluminum (Al) on the surface of the lithium nickel-based oxide which are measured by Energy Dispersive X-ray Spectroscopy (EDX) respectively satisfy Equations 1 and 2 below: (Concentration ratio of Co in nodule to positive electrode active material)≤(Concentration ratio of Co at nodule interface to positive electrode active material)≤ (Concentration ratio of Co on surface of lithium nickel-based oxide particle to positive electrode active material) (Concentration ratio of Al on surface of lithium nickel-based oxide particle to positive electrode active material)≤ (Concentration ratio of Al at nodule interface to positive electrode active material)",
  "title": "POSITIVE ELECTRODE ACTIVE MATERIAL, METHOD FOR PREPARING SAME, AND POSITIVE ELECTRODE AND LITHIUM SECONDARY BATTERY BOTH COMPRISING SAME"
}