| abstract |
The present invention relates to a positive electrode additive, a method for manufacturing the same, and a positive electrode and a lithium secondary battery including the same. Specifically, in one embodiment of the present invention, a compound represented by the following formula (1); A compound represented by the following formula (2); And lithium phosphate (Li 3 PO 4 ); It provides a positive electrode additive for a lithium secondary battery comprising: [Formula 1] Li 2+a Ni b M 1-b O 2+c In Formula 1, M is a metal element forming a divalent cation, -0.2≤a≤0.2, 0.5≤b≤1.0, -0.2≤c≤0.2, [Chemical Formula 2] Ni 2-e M 1-e P 4 O 12 In Chemical Formula 2, 0.5≦e≦1.0, and M is the same as defined in Chemical Formula 1. According to another embodiment of the present invention, the positive electrode additive of the embodiment includes a lithium raw material, a nickel raw material, and a phosphorus raw material in the reactor at a flow rate of 1.5 to 2.5 L/min to which an inert gas is supplied. It can be prepared by heat-treating the raw material mixture at a temperature range of 600 to 900 ℃. |