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    • 9. 发明公开
    • 이차전지용 양극 전구체 제조방법
    • 用于二次电池的正极活性材料前驱体的制造
    • KR1020140083854A
    • 2014-07-04
    • KR1020130068003
    • 2013-06-13
    • 주식회사 포스코재단법인 포항산업과학연구원주식회사 포스코이에스엠
    • 송정훈김도형박영민이인성이재명
    • B01J19/18H01M4/04H01M4/525H01M4/505
    • H01M4/04H01M4/505H01M4/525
    • Provided is a method for producing a positive polar precursor for a secondary battery. According to the present invention, the positive polar precursor for a secondary battery is produced using a positive polar material producing device comprising: a rotary cylinder which is rotated at a particular speed; an external cylindrical container which is concentrically formed with an agitating rod produced in the rotary cylinder and is formed on and fixed to the outer circumference of the rotary cylinder; and a feeding port which is equipped in the front end of the external cylindrical container so as to supply a positive polar precursor starting material, a chelating agent, and a pH adjusting agent. The method of the present invention comprises the steps of: supplying a positive polar precursor starting material, a chelating agent, and a pH adjusting agent overall having the concentration of 1.0-4.0 M through the feeding port; and co-precipitating the precursor starting material in a temperature range of 40-80°C by means of the rotation of the agitating rod. Through multiple additional feeding ports formed at the top of the positive polar material producing device, a precursor starting material having a different composition is added, and the rotation speed of the rotary cylinder may be 300-2000 rpm.
    • 提供一种二次电池用正极前体的制造方法。 根据本发明,使用正极材料制造装置制造二次电池用正极前体,其包括:以特定速度旋转的旋转圆筒; 外圆柱形容器,其与旋转圆筒中产生的搅拌棒同心地形成并形成在旋转圆筒的外周上并固定到旋转圆筒的外周; 以及供给口,其配置在外筒状容器的前端,供给正极性前体原料,螯合剂和pH调节剂。 本发明的方法包括以下步骤:通过进料口供给总浓度为1.0-4.0M的正极性前体原料,螯合剂和pH调节剂; 并通过搅拌棒的旋转在40-80℃的温度范围内共沉淀前体原料。 通过形成在正极材料制造装置的顶部的多个附加进料口,添加具有不同组成的前体起始材料,旋转圆筒的转速可以为300-2000rpm。