The present invention is related to a complex oxide. [0002] The complex oxide has the crystallographic structure of LiMOand formula AMM'Owhere A is Li, Na or a mixture thereof, each of M and M' is a tetravalent metal selected from Ru, Ir, Pt, Sn and Ti, M ...

An excellent positive electrode material for a lithium secondary battery is provided that can increase low-temperature load characteristics of the battery as well as improving coatability. When measured by mercury intrusion porosimetry, the material meets ...