| abstract |
In the present invention, manganese ions (Mn 3+ , in a high temperature region of 45 to 60° C.) are added by applying rare earth or activated carbon to a high voltage anode material, LiNi 0.5 Mn 1.5 O 4, to the positive electrode. A secondary battery capable of preventing elution of Mn 4+ ) and preventing deterioration in life or output characteristics due to resistance of manganese ions eluted by changes over time, resulting in capacity deterioration. ); An anode spaced apart from the anode; And a separator disposed between the positive electrode and the negative electrode, wherein the positive electrode includes a first current collector and an LNMO (LiNi 0.5 Mn 1.5 O 4 ) material electrode formed on the surface of the first current collector, and the negative electrode includes a second current collector. It characterized in that it comprises an LTO (Li 4 Ti 5 O 12 ) material electrode formed on the surface of the second current collector. |