NOVELTY - A positive electrode (1) for a non-aqueous electrolytic secondary battery (11) comprises a positive electrode active material layer containing a positive electrode active material and at least one coupling agent (I). The positive electrode active material includes lithium transition metal oxide particles that contain nickel and/or cobalt and at least one rare-earth compound selected from e.g. erbium hydroxide/oxyhydroxide, ytterbium hydroxide/oxyhydroxide, and thulium hydroxide/oxyhydroxide, fixed on surfaces of the lithium transition metal oxide particles in a dispersed form.    USE - As positive electrode for a non-aqueous electrolytic secondary battery (claimed) used in driving power supply of mobile terminal devices such as cellular phones, notebook computers, and personal digital assistants, and in hybrid electric vehicles or electric tools.    ADVANTAGE - In the positive electrode, the coupling agent selectively coordinates with the rare-earth compound fixed on the surfaces of the lithium transition metal oxide particles. Thus, a stable film is formed around the rare-earth compound. In addition, due to the interaction between the coupling agent and the rare-earth compound, the catalytic property of decomposing the electrolytic solution is suppressed and the decomposition of the electrolytic solution also considerably suppressed. As a result, in the battery comprising the positive electrode, even under storage at high temperature or continuous charging, a decrease in the capacity and the generation of gas are suppressed.    DETAILED DESCRIPTION - A positive electrode (1) for a non-aqueous electrolytic secondary battery (11) comprises a positive electrode active material layer, where the positive electrode active material layer contains a positive electrode active material and at least one coupling agent of formula (I). The positive electrode active material includes lithium transition metal oxide particles that contain nickel and/or cobalt and at least one rare-earth compound selected from erbium hydroxide, erbium oxyhydroxide, ytterbium hydroxide, ytterbium oxyhydroxide, terbium hydroxide, terbium oxyhydroxide, dysprosium hydroxide, dysprosium oxyhydroxide, holmium hydroxide, holmium oxyhydroxide, thulium hydroxide, thulium oxyhydroxide, lutetium hydroxide, lutetium oxyhydroxide, neodymium hydroxide, neodymium oxyhydroxide, samarium hydroxide, samarium oxyhydroxide, praseodymium hydroxide, europium hydroxide, europium oxyhydroxide, gadolinium hydroxide, gadolinium oxyhydroxide, lanthanum hydroxide, lanthanum oxyhydroxide, yttrium hydroxide, yttrium oxyhydroxide, scandium hydroxide, and scandium oxyhydroxide, fixed on surfaces of the lithium transition metal oxide particles in a dispersed form.    M1=Al to which a functional group can be bonded;    R1 and R2= less than or equal to 18C alkyl or less than or equal to 18C alkoxy (both linear or branched);and    n=1-3.    An INDEPENDENT CLAIM is included for a non-aqueous electrolytic secondary battery comprising: the positive electrode (1); a negative electrode (2); a separator (3); a non-aqueous electrolytic solution; and a casing (6) within which the positive electrode, negative electrode, separator, and the non-aqueous electrolytic solution are disposed, where the coupling agent (I) is contained within the casing.    DESCRIPTION OF DRAWING(S) - The figure shows a sectional view of a non-aqueous electrolytic secondary battery.    Positive electrode (1)    Negative electrode (2)    Separator (3)    Aluminum-laminate casing (6)    Non-aqueous electrolytic secondary battery (11)