{
  "$type": "site.standard.document",
  "description": "An object of the present invention is to obtain a lithium ion battery that has high safety and a high energy density and allows estimation of the remaining capacity of the battery from the discharge voltage, and the present invention provides a positive electrode for lithium ion secondary batteries…",
  "path": "/patents/1417373",
  "publishedAt": "2025-09-17T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M10/052",
    "TOYOTA MOTOR CO LTD [JP]"
  ],
  "textContent": "An object of the present invention is to obtain a lithium ion battery that has high safety and a high energy density and allows estimation of the remaining capacity of the battery from the discharge voltage, and the present invention provides a positive electrode for lithium ion secondary batteries that includes a lithium iron phosphate particle, a lithium iron manganese phosphate particle, and a layered oxide-based active material particle at a weight ratio of x : y : z, wherein 0.10 ≤ x ≤ 0.60, 0.10 ≤ y ≤ 0.70, 0.10 ≤ z ≤ 0.40, and x + y + z = 1, and provides a lithium ion secondary battery characterized in that a discharge curve indicating a relationship between a discharge voltage and a discharge capacity of the lithium ion secondary battery has one non-plateau region between two plateau regions, and a width of the non-plateau region is 20% or more in terms of a state of charge (SOC).",
  "title": "POSITIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERIES, ELECTRODE PASTE FOR LITHIUM ION SECONDARY BATTERIES, AND LITHIUM ION SECONDARY BATTERY"
}