NOVELTY - The battery active-material contains two or more types of active-material and has core-shell type structure. The active-material of shell portion (1) has output higher than that of active-material of core portion (2).    USE - For anode active-material of lithium ion secondary battery used for vehicles (all claimed), such as hybrid car, electric vehicle, hybrid electric vehicle, hybrid fuel cell electric vehicle and fuel cell electric vehicle. Also for nickel-hydrogen battery and electrical-double-layer capacitor.    ADVANTAGE - The active-material provides battery having excellent output characteristics and capacitance performance.    DETAILED DESCRIPTION - The active-material of core portion and shell portion are chosen from lithium metal complex oxide, lithium phosphate, lithium sulfate, metal oxide, metal sulfide, conductive polymer and/or their mixtures. The active-material of shell portion is preferably lithium metal complex oxide of manganese group (LiMn2O4), in which manganese is optionally substituted by elements such as lithium, boron, phosphorus, nitrogen, magnesium, aluminum, calcium, vanadium, titanium, chromium, nickel, iron, cobalt, copper, zinc, strontium, zirconium, niobium, molybdenum, tin or their mixtures. The active-material of core portion is preferably lithium metal complex oxide of nickel group (LiNiO2), in which nickel is optionally substituted by elements such as lithium, boron, phosphorus, nitrogen, magnesium, aluminum, calcium, vanadium, titanium, chromium, nickel, iron, cobalt, copper, zinc, strontium, zirconium, niobium, molybdenum, tin or their mixtures. The elution prevention layer (4) is formed on the outer surface of shell portion. An INDEPENDENT CLAIM is included for manufacture of battery active-material.    DESCRIPTION OF DRAWING(S) - The figure shows a cross-sectional view of the battery active-material. (Drawing includes non-English language text)    Shell portion of anode active material particle (1)    Core portion of anode active material particle (2)    Anode active material particle (3)    Elution prevention layer (4)