| abstract |
(57) [Abstract] [PROBLEMS] Lithium battery container and / or current collector, In particular, to provide a battery in which a container and / or a current collector made of aluminum has practically no corrosion and has a high energy capacity. In a secondary battery including at least a positive electrode current collector layer, a positive electrode active material layer, an electrolyte layer, a negative electrode active material layer made of lithium or a lithium compound, and a laminated structure of a negative electrode current collector layer and an outer container, The outer container is made of aluminum or a material mainly containing aluminum, and the electrolyte salt of the electrolyte layer is selected from the group consisting of sulfonates represented by the following formulas (1), (2), (3) and (4). Secondary battery in which at least one selected from the above and at least one lithium salt other than lithium sulfonate are used in combination. Embedded image LiN (CF 3 SO 2 ) 2 (1) LiC (CF 3 SO 2 ) 3 (2) LiOCF 3 SO 2 (3) LiCRq (CF 3 SO 2 ) n (4) (wherein R is It is an alkyl group, and q and n represent a positive integer, provided that the sum of q and n is 3.) |