Doped lithium titanium spinel compound and electrode comprising the same

The present invention relates to a doped lithium titanium spinel with formula I LiyK'TiK"OA (I), wherein A is on or more anions selected from the group is consisting I, N, Br, Cl, F, K', K" are each one or more cations selected from the group consisting of Na, K, Cd, Se, Te, S, Sb, As, P, Pb, Bi, Hg, Si, C and 0 ≤ x, y, z ≤ 0.4. Further, the present invention relates to an electrode comprising a layer of such lithium titanium spinel and a secondary non-aqueous electrolyte battery with such an electrode.