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AssigneePosco Es Materials Co., Ltd.
InventorsSung-Hwan MIN, Min-Young LEE, Hyoung-Shin KO, Jae-An LEE
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The present invention relates to a lithium-manganese composite oxide in which the size of the face angle (vertical angle) of a primary particle is adjusted, and a method for preparing the same. The lithium-manganese composite oxide in which the size of the vertical angle of the primary particle is adjusted, and the method for preparing the same according to the present invention may gently adjust the size of the vertical angle of the polygon that constitutes a primary particle having a shape of a convex polyhedron in the lithium-manganese composite oxide, thus preventing the formation of convex-concave portions at the surface of an electrode plate in the process of forming the electrode plate by means of rolling during the manufacturing of a battery, thereby having an effect of improving characteristics of the battery.
A lithium-manganese composite oxide in which the size of vertical angle of a primary particle is adjusted, which is a secondary particle formed by agglomeration of a plurality of primary particles, wherein the primary particle has a shape of convex polyhedron, and the size of vertical angle of the polygon constituting the convex polyhedron is 90° to 120°.
Dependencies are inferred from the claim text.