Loading patent…
AssigneeHaldor TopsøE A/S
InventorsSøren DAHL, Jakob Weiland HØJ, Jonathan HØJBERG, Line Holten KOLLIN
Estimating the term…
The invention relates to a cathode active material for a high voltage secondary battery with a cathode arranged for being fully or mainly operated above 4.4 V vs. Li/Li+, wherein the cathode active material is an oxide that comprises sulfate as a capacity fade reducing compound. The invention also relates to a cathode active material for a high voltage secondary battery having the composition LixMyMn2−yO4−v(SO4)z, where 0.9≤x≤1.1, 0.4≤y≤0.5, 0<z≤0.1, 0≤v≤z and M is a transition metal chosen from the group consisting of Ni, Mg, Ti, V, Cr, Fe, Co, Cu, Zn, Al, Ga, Rb, Ge, Mo, Nb, Zr, Si and combinations thereof, wherein the cathode active material comprises sulfate as a capacity fade reducing compound. Furthermore, the invention relates to a secondary battery comprising the cathode active material according to the invention, and to a method for preparing the cathode active materials of the invention.
A cathode active material for a high voltage secondary battery with a cathode arranged for being fully or mainly operated above 4.4 V vs. Li/Li+, wherein the cathode active material is an oxide that comprises sulfate as a capacity fade reducing compound.
A method for preparing a cathode active material for a high voltage secondary battery having the composition LixMyMn2−yO4−v(SO4)z, where 0.9≤x≤1.1, 0.4≤y≤0.5, 0<z≤0.1, 0≤v≤z and M is a transition metal chosen from the group consisting of Ni, Mg, Ti, V, Cr, Fe, Co, Cu, Zn, Al, Ga, Rb, Ge, Mo, Nb, Zr, Si and combinations thereof, wherein the cathode active material comprises sulfate as a capacity enhancing compound, the process comprising the steps of:
Dependencies are inferred from the claim text.