Cathode active material for secondary battery, method of manufacturing the same, and cathode for lithium secondary battery including the cathode active material

A cathode active material comprising:

• a lithium-containing transition metal oxide;
• and
• two or more metal composite oxide layers selected from the group consisting of Chemical Formulae 1 to 3 which are coated on a surface of the lithium-containing transition metal oxide:
• [Chemical Formula 1]
• M(C2H5O2)n
• [Chemical Formula 2]
• M(C6H(8-n)O7)
• [Chemical Formula 3]
• M(C6H(8-n)O7)(C2H5H2)
• (where M, as a metal desorbed from a metal precursor, represents at least one metal selected from the group consisting of magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), yttrium (Y), titanium (Ti), zirconium (Zr), vanadium (V), niobium (Nb), tantalum (Ta), chromium (Cr), molybdenum (Mo), tungsten (W), manganese (Mn), iron (Fe), cobalt (Co), iridium (Ir), nickel (Ni), zinc (Zn), aluminum (Al), gallium (Ga), indium (In), silicon (Si), germanium (Ge), tin (Sn), lanthanum (La), and cerium (Ce), and n is an integer between 1 and 4).