| http://www.w3.org/ns/prov#value | - Namely, the publication discloses a method of calcining a mixture of alithium compound, a nickel compound, and an N compound (where N is an element other than Li, Ni, or O) in a calcining furnace to obtain a lithium-nickel composite oxide represented by the general formula : Li.sub.x Ni.sub.y N.sub.z O.sub.2(0.8<x<1.2, 0.8<y+z<1.2, and O.ltoreq.z<0.2), wherein a gas containing 0.01 vol % or less o
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