NOVELTY - A nonaqueous electrolyte secondary battery has a positive electrode, a negative electrode and a nonaqueous electrolyte. The opposing surface of positive electrode and negative electrode has area in which capacitance ratio of negative electrode with respect to positive electrode per unit area is less than another portion by 1% or more. The nonaqueous electrolyte contains 1,3-dioxane, and aromatic compound chosen from cycloalkyl benzene compound and compound having quaternary carbon adjacent to benzene ring.    USE - Nonaqueous electrolyte secondary battery. Uses include but are not limited to hybrid electric vehicles, electric vehicles, mobile telephone, notebook personal computer and portable music player.    ADVANTAGE - The nonaqueous electrolyte secondary battery has excellent charging/discharging characteristics, and high safety, even during overcharge.    DETAILED DESCRIPTION - A nonaqueous electrolyte secondary battery has a positive electrode comprising positive electrode active material mixed layer formed on a surface of a positive electrode core, a negative electrode having negative electrode active material mixed layer formed on the surface of a negative electrode core and a nonaqueous electrolyte containing nonaqueous solvent and electrolytic salt. The capacitance ratio of negative electrode is 1 or more with respect to capacitance ratio of positive electrode. The opposing surface of positive electrode and negative electrode has area in which capacitance ratio of negative electrode with respect to positive electrode per unit area is less than another portion by 1% or more. The proportion of area in which capacitance ratio of negative electrode with respect to positive electrode per unit area is less than another portion by 1% or more, is 5-95% with respect to total area of opposing portion of positive electrode and negative electrode. The nonaqueous electrolyte contains 1,3-dioxane, and an aromatic compound chosen from cycloalkyl benzene compound and compound having quaternary carbon adjacent to benzene ring.