ENERGY STORAGE CELLS WITH RAPID CHARGE AND DISCHARGE CAPABILITIES HAVING NB2O5 AND ACTIVATED CARBON AS NEGATIVE ACTIVE MATERIAL AND LITHIUM MANGANESE OXIDE AS POSITIVE ACTIVE MATERIAL

An energy storage cell (1) for storing electrical energy, the cell (1) comprises a negative electrode (22) and a positive electrode (32) that are immersed in an organic anhydrous electrolyte (4), wherein the negative electrode (22) includes a negative active material composition that has Nb2O5 particles and activated carbon (AC) particles; wherein the positive electrode (32) includes a positive active material composition that for the most part has LiMn2O4 (LMO) particles.