{
  "$type": "site.standard.document",
  "description": "The purpose of the present invention is to provide a nickel composite hydroxide which is a precursor of a positive electrode active material for a lithium ion secondary battery excellent in a positive electrode resistance or a cycle characteristic. The nickel composite hydroxide comprises a nickel…",
  "path": "/patents/1412635",
  "publishedAt": "2026-05-06T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "C01G53/04",
    "SUMITOMO METAL MINING CO [JP]"
  ],
  "textContent": "The purpose of the present invention is to provide a nickel composite hydroxide which is a precursor of a positive electrode active material for a lithium ion secondary battery excellent in a positive electrode resistance or a cycle characteristic. The nickel composite hydroxide comprises a nickel, a cobalt, a manganese, and an element M with an atomic ratio of Ni: Co: Mn: M = 1-x1-y1-z1: x1: y1: z1 (wherein M is at least one element selected from a group consisting of a transition metal element other than Ni, Co, Mn, a II group element, and a XIII group element, 0.15≦x1≦0.25, 0.15≦y1≦0.25, 0 ≦z1≦0.1), the nickel composite hydroxide is having a cobalt rich layer or a manganese rich layer from a surface of a particle of the secondary particles toward an inside of the particle of the secondary particles and a layered low-density layer between the cobalt rich layer or the manganese rich layer and a center of the particle of the secondary particles, and a thickness of the cobalt rich layer or the manganese rich layer is 1% or more and 10% or less with respect to a diameter of the secondary particles, and also, a thickness of the low-density layer is 1% or more and 10% or less with respect to the diameter of the secondary particles.",
  "title": "NICKEL COMPOSITE HYDROXIDE, METHOD FOR PRODUCING NICKEL COMPOSITE HYDROXIDE, POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERY, METHOD FOR PRODUCING POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERY, AND LITHIUM ION SECONDARY BATTERY"
}