| 摘要 |
The present invention provides lithium manganate which has a high output and is excellent in high-temperature stability. The present invention relates to lithium manganate particles which are produced by mixing a lithium compound, a manganese compound, a Y compound and an A compound with each other and then calcining the resulting mixture, and have a composition represented by the following chemical formula 1 and an average secondary particle diameter (D 50 ) of 1 to 15 µm,
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ(Chemical Formula)€ƒ€ƒ€ƒ€ƒ€ƒLi 1+x Mn 2-x-y Y y O 4 + zA
in which Y is at least one element selected from the group consisting of Al and Mg; A is a sintering aid element having a melting point of not higher than 850°C; x and y satisfy 0.03 ‰¤ x s 0.15 and 0 ‰¤ y ‰¤ 0.20, respectively; z is in the range of 0 to 2.5 mol% based on Mn,
wherein the lithium manganate particles have a sulfur content of not more than 100 ppm. |
