| 摘要 |
PURPOSE: A manufacturing method of a positive electrode active material is provided to provide a lithium transition metal oxide with uniform pore hollowness because the shape and size control of the positive electrode active material is easy. CONSTITUTION: A manufacturing method of a positive electrode active material comprises: a step of precipitating together a silica colloidal, a transition metal precursor, and a precipitator to obtain a silica-transition metal hydroxide with a core-shell shape; a step for heat-treating a silica-transition metal hydroxide with a core-shell shape to obtain a silica-transition metal oxide with a core-shell shape; a step for removing the silica core to obtain hollow transition metal oxide; and a step for mixing the hollow transition metal oxide and a lithium precursor and sintering a mixture thereof to obtain a hollow lithium transition metal oxide. |
