| abstract |
The present invention provides improved Li 1 + x [M y Mn (2-y) ] O 4-z S z (0 ≦ x ≦ 0.1, 0.01 ≦ y ≦ 0.5, 0.01 ≦ z ≦ 0.5, M = Mn, Ni, Mg) relates to a 3V class spinel oxide. The present invention also provides a method for preparing a 3V class spinel oxide by carbonate coprecipitation of the starting material of the spinel oxide and calcination after sulfur addition. The 3V class spinel oxide of the present invention has a uniform particle size and a spherical particle shape, and the lithium secondary battery including the same has excellent flatness at the 3V potential and excellent battery life characteristics.n n n n Lithium Secondary Battery, Carbonate Precipitation, Cathode Active Material, 3V Spinel, Active Material, Nanoparticles |