NOVELTY - The non-aqueous electrolyte secondary battery useful in electronic device, comprises positive and negative electrodes (4,5) including positive and negative electrode current collectors carrying positive and negative electrode material mixture layers respectively, a separator (6) provided between the positive electrode and the negative electrode and a non-aqueous electrolyte solution. The positive electrode current collector is a conductive body containing aluminum. The positive electrode material mixture layer includes first and second material mixture layers.    USE - The non-aqueous electrolyte secondary battery such as lithium ion secondary battery is useful in electronic device.    ADVANTAGE - The lithium ion secondary battery has excellent safety and superior electrical performance thus the battery is applicable as a driving source for electrical devices, and easily restrains the excessive heating even if the internal short circuit occurs in the battery.    DETAILED DESCRIPTION - The non-aqueous electrolyte secondary battery useful in electronic device, comprises positive and negative electrodes (4,5) including positive and negative electrode current collectors carrying positive and negative electrode material mixture layers respectively, a separator (6) provided between the positive electrode and the negative electrode and a non-aqueous electrolyte solution. The positive electrode current collector is a conductive body containing aluminum. The positive electrode material mixture layer includes a first material mixture layer and a second material mixture layer formed on the first material mixture layer. The first material mixture contains a first organic material, which is soluble or dispersible in water, a carbon conductive material, a positive electrode active material made of aluminum-containing lithium composite oxide, and a first binder made of the first organic material. The second material mixture layer is made of a second organic material, which is soluble or dispersible in an organic solvent. The second material mixture contains a second binder made of the second organic material. The first material mixture layer is formed by drying a first solution mixture prepared by mixing the first material mixture with water. The second material mixture layer is formed by drying a second solution mixture prepared by mixing the second material mixture with an organic solvent. An aluminum oxide coating is formed at an interface between the positive electrode current collector and the first material mixture layer by a reaction between water in the first solution mixture and aluminum in the positive electrode current collector. INDEPENDENT CLAIMS are included for:    (1) a method for manufacturing a positive electrode of a non-aqueous electrolyte secondary battery; and    (2) a method for manufacturing a positive electrode of a non-aqueous electrolyte secondary battery.    DESCRIPTION OF DRAWING(S) - The diagram shows a vertical sectional view a nonaqueous electrolyte secondary battery.    Sealing plate (2)    Gasket (3)    Positive electrode (4)    Negative electrode (5)    Separator. (6)