Patent ID: 8940439
Filing Date: 2015-01-27
Classification: H01M,Y02E,Y02P,Y02T

Abstract:
1. A secondary battery comprising: a cathode; an anode; and an electrolytic solution, wherein the anode contains one or more of titanium-containing lithium composite oxides expressed by the following Formula 1 to Formula 3 as an anode active material, and the electrolytic solution contains cyclic disulfonic acid anhydride expressed by the following Formula 4 or cyclic disulfonic acid anhydride expressed by the following Formula 5 or both: where M1 is one or more of Mg, Ca, Cu, Zn, and Sr, and x satisfies 0≦x≦⅓: where M2 is one or more of Al, Sc, Cr, Mn, Fe, Ga, and Y, and y satisfies 0≦y≦⅓: where M3 is one or more of V, Zr, and Nb, and z satisfies 0≦z≦⅔: where R1 to R4 are an alkyl group (C m H 2m+1 : m satisfies 0≦m≦4): where R5 to R10 are an alkyl group (C n H 2n+1 : n satisfies 0≦n≦4).