| 摘要 |
A lithium battery includes a cathode containing a lithium manganese oxide with a spinel structure; an anode; and an electrolyte. When stored at a temperature of about 50° C. or greater for about 7 days or longer in a charged state, the lithium manganese oxide with the spinel structure has a peak intensity ratio of the 660 cm-1 peak to the 590 cm-1 peak (I(660)/I(590)) in the Raman spectrum of about 0 to about 2. The electrolyte includes a mixed solvent of a high-k solvent and a low-boiling-point solvent in a volumetric ratio of from about 1:9 to about 4:6, and a lithium salt at a concentration of about 0.5M to about 2M.
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