NOVELTY - A nonaqueous electrolyte secondary battery (100) consists of a wound electrode component (55) formed by winding a positive electrode and a negative electrode through a separator, and an electrolyte solution. A negative-mix layer containing a negative-electrode active material is formed in the surface of negative electrode. The cumulative frequency of active material having a particle diameter of 3 mu m or less is 10-50%. The electrolyte solution comprises 0.1-0.4M oxalatoborate type compound and 0.06M or more difluorophosphoric acid compound.    USE - Nonaqueous electrolyte secondary battery e.g. lithium ion secondary battery. Uses include but are not limited to hybrid vehicles, electric vehicles, personal computers, portable terminals, and other electric products.    ADVANTAGE - The nonaqueous electrolyte secondary battery has excellent input characteristics, safety, and storage durability.    DETAILED DESCRIPTION - A nonaqueous electrolyte secondary battery consists of a wound electrode component formed by winding a positive electrode and a negative electrode through a separator, and an electrolyte solution interposed between the electrodes. A negative-mix layer containing a negative-electrode active material is formed in the surface of negative electrode. The average particle diameter of active material is 5-20 mu m. The cumulative frequency of active material having a particle diameter of 3 mu m or less is 10-50%. The electrolyte solution comprises 0.1-0.4M oxalatoborate type compound and 0.06M or more difluorophosphoric acid compound. An INDEPENDENT CLAIM is included for manufacture of nonaqueous electrolyte secondary battery.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a lithium ion secondary battery as the nonaqueous electrolyte secondary battery.    Battery case (40)    Positive-electrode current collector (51)    Negative-electrode current collector (52)    Wound electrode component (55)    Nonaqueous electrolyte secondary battery (100)