Patent ID: 7709142

Claim:
A battery comprising: a cathode; an anode; and an electrolytic solution, wherein, the cathode has a cathode active material layer with a thickness of from 100 μm to 130 μm, the anode has an anode active material layer containing a carbon material and having a thickness of from 85 μm to 120 μm and a volume density of from 1.7 g/cm 3 to 1.85 g/cm 3 , the electrolytic solution contains a solvent including vinylene carbonate and 4-fluoro-1,3-dioxolane-2-one, and a weight ratio of vinylene carbonate to 4-fluoro-1,3-dioxolane-2-one in the solvent is in the range from 0.02 to 10.