Lg Chem, Ltd

Chang Jun Moon

Kyoung Wan Park

Seong Bae Kim

Eun Hee Kim

Hyun Uk Kim

Yi Rang Lim

Hong Kyu Park

A method of preparing a positive electrode active material precursor includes forming positive electrode active material precursor particles while adding a reaction solution including a transition metal-containing solution, an ammonium ion-containing solution, and a basic aqueous solution to a reactor with a filtration device installed therein. The method further includes performing continuous concentration in which the reaction solution is added while continuously discharging a portion of the reaction solution in the reactor out of the reactor using the filtration device when the reactor is full, wherein a concentration of a solid content in the reactor is increased at a constant rate.

Positive electrode active material precursor for lithium secondary battery, and method of preparing the same

A positive electrode active material precursor having a uniform particle size distribution and represented by Formula, wherein a percentage of fine powder with an average particle diameter (D) ofμm or less is generated when the positive electrode active material precursor is rolled atkgf/cmis less than%, and an aspect ratio isor more, and a method of preparing the positive electrode active material precursor[NiCoMM  [Formula]

A co-precipitation reactor with a continuous filtering system mounted, wherein the co-precipitation reactor includes a main body accommodating a reactant for reaction therein, an input unit inputting the reactant into the main body, and a filter unit installed in the main body to filter a precursor of the precursor generated by reacting with the reactant in the main body and a reaction solution.

Growing community of inventors

Daejeon, South Korea

Chang Jun Moon