Lithium secondary battery comprising positive electrode active material for synthesis of lithium cobalt oxide and preparation method thereof

A lithium secondary battery component comprising:

• a positive electrode comprising a positive electrode current collector and a positive electrode material mixture;
• a negative electrode comprising a negative electrode current collector and a negative electrode material mixture;
• a separator interposed therebetween;
• and
• electrolyte,
• wherein the positive electrode material mixture comprises a complex combined from Co, CoO, Co3O4 and Li2O as a positive electrode material, and the negative electrode material mixture comprises lithium metal that is separated from the negative electrode current collector and positioned between the positive electrode material mixture and the separator wherein a thin film of lithium is formed on one side of the positive electrode material mixture, and
• wherein the positive electrode material complex comprises aggregates of fine powders of Co, CoO, Co3O4, and Li2O, wherein the aggregates have structures having internal voids.