{
  "$type": "site.standard.document",
  "description": "A positive electrode active material for a lithium ion secondary battery containing lithium nickel manganese complex oxide particles, wherein the lithium nickel manganese complex oxide particles are composed of secondary particles in which primary particles of a lithium nickel manganese complex…",
  "path": "/patents/1421319",
  "publishedAt": "2025-04-02T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "C01G53/50",
    "SUMITOMO METAL MINING CO [JP]"
  ],
  "textContent": "A positive electrode active material for a lithium ion secondary battery containing lithium nickel manganese complex oxide particles, wherein the lithium nickel manganese complex oxide particles are composed of secondary particles in which primary particles of a lithium nickel manganese complex oxide represented by a general formula LidNi1-a-b-cMnaMbZrcO2+α (where M is at least one element selected from Co, W, Mo, Mg, Ca, Al, Ti, Cr, and Ta, and is 0.05 ≦ a < 0.60, 0 ≦ b < 0.60, 0.00003 ≦ c ≦ 0.03, 0.05 ≦ a + b + c ≦ 0.60, 0.95≦d≦ 1.20, and -0.2 ≦ α ≦ 0.2), wherein at least a portion of zirconium is dispersed in the primary particle, and wherein an amount of a positive active material for a lithium ion secondary battery in which an amount of excessive lithium determined by a neutralization titration method is 0.02 mass% or more and 0.09 mass% or less.",
  "title": "NEGATIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY CELL, METHOD FOR MANUFACTURING NEGATIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY CELL, AND LITHIUM ION SECONDARY CELL"
}