POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, MANUFACTURING METHOD THEREFOR, AND LITHIUM SECONDARY BATTERY COMPRISING SAME

WIPO Patent Application WO/2019/013511

A3

The present invention relates to a positive electrode for a lithium secondary battery, a manufacturing method therefor, and a lithium secondary battery comprising the same, the positive electrode comprising a positive electrode mixture layer formed on a positive electrode current collector, wherein the positive electrode mixture layer comprises a positive electrode active material and a lithium ion additive, wherein the lithium ion additive is a lithium ion conductive ceramic material represented by chemical formula 1 below, and wherein the lithium ion conductive ceramic material has a structure in which lithium ions are additionally inserted into empty sites having a Na super ionic conductors-type (NASICON-type) structure. [Chemical formula 1] Li1+x1+y1M1 2-x1M2 x1(PO4)3 wherein, M1 is at least one of Ti and Ge; M2 is at least one selected from the group consisting of Al, Cr, Ga, Fe, Sn, In, Lu, Y, and La; and 0