| 摘要 |
Disclosed is a transition metal precursor used for preparation of lithium composite transition metal oxide, the transition metal precursor comprising a composite transition metal compound represented by the following Formula 1:
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒM(OH 1-x ) 2-y A y/n €ƒ€ƒ€ƒ€ƒ€ƒ(1)
wherein
M comprises two or more selected from the group consisting of Ni, Co, Mn, Al, Cu, Fe, Mg, B, Cr and second period transition metals;
A comprises one or more anions except OH 1-x ; 0 ‰¤ x ‰¤ 0.5 ; 0.01 ‰¤ y ‰¤ 0.5 ;
and
n is an oxidation number of A. The transition metal precursor according to the present invention contains a specific anion. A lithium composite transition metal oxide prepared using the transition metal precursor comprises the anion homogeneously present on the surface and inside thereof, and a secondary battery based on the lithium composite transition metal oxide thus exerts superior power and lifespan characteristics, and high charge and discharge efficiency. |
