Patent ID: 8916291

Claim:
A battery comprising: a cathode; an anode; and an electrolytic solution; and a film package member containing the cathode, the anode and the electrolytic solution, wherein, the electrolytic solution contains 4-fluoro-1,3-dioxolan-2-one and a nitrogen compound having an unshared electron, the nitrogen compound includes at least one selected from the group consisting of hexamethylenetetramine, a cyclic compound shown in Chemical formula 5, and a cyclic compound shown in Chemical formula 6, Chemical formulae 5-6 being: where R1 represents hydrogen or a substituent and p represents an integer number of 2 or more, and where R2 and R3 represent hydrogen or a substituent and q represents an integer number of 2 or more, and the concentration of the nitrogen compound is within the range: 4-fluoro-1,3-dioxolan-2-one (mol/kg)/number of unshared electron pairs in nitrogen compound×0.4≦concentration of nitrogen compound (mol/kg)≦concentration of 4-fluoro-1,3-dioxolan-2-one (mol/kg)/number of unshared electron pairs in nitrogen compound×10.