| 摘要 |
A powderous lithium transition metal oxide having a layered crystal structure Li1+a M1-a O2~b M'k S m with -0.03 < a < 0.06, b.congruent.= 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-d Mn c CO d, 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. |
