{
  "$type": "site.standard.document",
  "description": "Provided is a lithium ion positive electrode active material for a secondary battery that can realize a high operating voltage and a high capacity while suppressing capacity drop with cycles by using a low-cost material. A positive electrode active material for a secondary battery, which is a…",
  "path": "/patents/990039",
  "publishedAt": "2013-06-05T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M4/1315",
    "NEC ENERGY DEVICES LTD [JP]"
  ],
  "textContent": "Provided is a lithium ion positive electrode active material for a secondary battery that can realize a high operating voltage and a high capacity while suppressing capacity drop with cycles by using a low-cost material. A positive electrode active material for a secondary battery, which is a lithium manganese composite oxide represented by the following general formula (I) €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒLi a (M x Mn 2-x-y Y y )(O 4-w Z w )€ƒ€ƒ€ƒ€ƒ€ƒ(I) wherein in the formula (I), 0.5 ‰¤ x 1.2, 0 < y ‰¤ 0.3, 0 ‰¤ a ‰¤1.2, and 0 < w ‰¤ 1; M contains at least Fe and may further contain at least one selected from the group consisting of Ni, Cr and Cu other than Fe; Y is at least one selected from the group consisting of Li, Be, B, Na, Mg, Al, K, Ca, Ti and Si; and Z is at least one of F and Cl.",
  "title": "POSITIVE ELECTRODE ACTIVE MATERIAL FOR SECONDARY BATTERY AND SECONDARY BATTERY USING THE SAME"
}