| abstract |
The present invention relates to a sulphate containing mixed Lithium-manganese iron phosphate of formula n Li x Fe y Mn 1−y M 1−(y+z) (PO 4 ) u (SO 4 ) v n wherein M is a metal selected from the group Co, Ni, Al, Mg, Sn, Pb, Nb , B, Cu, Cr, Mo, Ru, V, Ga, Ca, Sr, Ba, Ti, Zr, Cd and mixtures thereof and wherein 0.9≦x≦1.5, 0≦y<1, and 0.5≦(y+z)≦1 and 0.0<u≦1.0 and 0<v≦0.25, a process for producing it as well as its use as cathode material in a secondary lithium-ion battery. |