CATHODE MATERIAL FOR A LITHIUM-ION RECHARGEABLE BATTERY

摘要

A positive electrode for a rechargeable battery comprising a lithium metal oxide powder having a layered crystal structure and having the following formula: Li x Tm y Hm z O 6 Wherein, 3≤x≤4.8, 0.60≤y≤2.0, 0.60≤z≤2.0, and x+y+z=6, where Tm is at least one of Mn, Fe, Co, Ni and Cr is a transition metal, and Hm is one or more metals of the group consisting of Zr, Nb, Mo and W. The lithium metal oxide powder may include a dopant and may have the following formula: Formula Li x Tm y Hm z M" m O 6-δ A δ wherein A is one or more elements of the group consisting of F, S or N, and M" is one or more metals of the group consisting of Ca, Sr, Y, La, Ce and Zr, where δ>0 or m> 0, δ≦0.05, m≦0.05, and x+y+z+m=6.