| 摘要 |
A powderous lithium transition metal oxide having a layered crystal structure Li1+aM1−aO2±bM′kSm with −0.03<a<0.06, b≅0, 0≦̸m≦̸0.6, m being expressed in mol %, M being a transition metal compound, consisting of at least 95% of either one or more elements of the group Ni, Mn, Co and Ti; M′ being present on the surface of the powderous oxide, and consisting of either one or more elements of the group Ca, Sr, Y, La, Ce and Zr, wherein: either k=0 and M=Ni1−c−dMncCOd, with 0<c<1, and 0<d<1; or 0.015<k<0.15, k being expressed in wt % of said lithium transition metal oxide; characterized in that for said powderous oxide, the X-ray diffraction peak at 44.5±0.3 degree, having as index 104, measured with K alpha radiation, has a FWHM value of ≦̸0.1 degree. By optimizing the sintering temperature of the metal oxide the FWHM value can be minimized. |
