Precursor particles of lithium composite transition metal oxide for lithium secondary battery, and cathode active material containing same

The present invention relates to precursor particles of a lithium composite transition metal oxide for a lithium secondary battery, and a cathode active material containing the same, wherein the precursor particles of a lithium composite transition metal oxide are composite transition metal hydroxide particles containing two or more types of transition metals and having an average diameter of 1-8 mum, and the composite transition metal hydroxide particles show a monodispersed diameter distribution and have a coefficient of variation of 0.2-0.7.