More particularly, it relates to a spinel cathode active material, in which a shell portion formed on the outer surface of Li1+a2O4 yAy showing the 4V grade potential consists of {TAIL ~ a composition} in which the dissolution of manganese does not occur, and {HEAD ~ thus the inner, outer and intermediate layers} of the cathode active material have different transition metal composition distributions 
in
More particularly , it relates to a spinel cathode active material , in which a shell portion formed on the outer surface of Li1+a2O4 yAy showing the 4V grade potential consists of { TAIL ~ a composition } in which the dissolution of manganese does not occur , and { HEAD ~ thus the inner , outer and intermediate layers } of the cathode active material have different transition metal composition distributions
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH