Patent ID: 8822076

Claim:
A positive electrode for a nonaqueous electrolytic secondary battery, the positive electrode comprising a positive electrode active material layer, wherein the positive electrode active material layer contains a positive electrode active material and at least one coupling agent represented by a general formula (1) below, 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 the rare-earth compound group consisting of 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, is fixed on surfaces of the lithium transition metal oxide particles in a dispersed form, where M represents Al to which a functional group may be bonded; R1 and R2 each independently represent an alkyl group including 18 or less carbon atoms or an alkoxy group including 18 or less carbon atoms; R1 and R2 may be the same as or different from each other; the alkyl group and the alkoxy group may be independently linear or branched; n is an integer of 1, 2 or 3; and when n is 2 or 3, a plurality of R1 may be the same as or different from each other and a plurality of R2 may be the same as or different from each other.