Lithium battery

A lithium battery comprising:

• a positive electrode;
• a negative electrode;
• and an organic electrolytic solution, wherein
• the positive electrode comprises a positive active material comprising lithium metal oxide,
• the negative electrode comprises a negative active material comprising a composite comprising a metal/metalloid nanostructure and a porous carbonaceous material,
• the organic electrolytic solution comprises a lithium sulfonimide-based compound and a lithium salt that reacts with the residual water molecules in an organic solvent in the organic electrolytic solution to produce at least one of a protonic acid and a Lewis acid,
• wherein the metal/metalloid nanostructure has at least one type of a structure selected from a nanowire, a nanotube, a nanobelt, and a nanorod,
• wherein the metal/metalloid nanostructure comprises at least one element selected from Si, Ge and Sn, and
• wherein the amount of lithium sulfonimide-based compound is about 0.05M to about 2.0M.