公开(公告)号：KR1020120096251A

公开(公告)日：2012-08-30

申请号：KR1020110015549

申请日：2011-02-22

Applicant: 한국과학기술연구원

Inventor： 조원일 ,  이영림 ,  류승호 ,  송민섭

IPC: H01M4/505 ,  H01M4/525 ,  H01M4/583 ,  H01M10/0525

CPC classification number: C01B33/20 ,  C01B32/05 ,  C01P2004/80 ,  C01P2006/40 ,  H01M4/366 ,  H01M4/5825 ,  H01M4/587 ,  H01M10/0525 ,  Y02E60/122

Abstract: PURPOSE: A manufacturing method of a positive electrode active material comprises a positive electrode active material with excellent charging/discharging efficiency according to cycle increase at room temperature and high capacity by low cost. CONSTITUTION: A manufacturing method of a positive electrode active material comprises a step of stirring silicon precursor compound which is an alkyl silicate, and a transition metal precursor compound which is a metal acetate or oxalate of metals selected from a lithium precursor compound, which is lithium acetate or lithium oxalate, manganese, iron, nickel, and cobalt; a step of obtaining powder by drying the mixture; a step of conducting wet ball milling by adding carbon source and non-polar organic solvent to the powder, and wet ball milling the same; and a step of heat-treating the wet ball milled powder.

Abstract translation: 目的：正极活性物质的制造方法包括具有优异的充放电效率的正极活性物质，其根据室温下的循环增加和低容量的高容量。 构成：正极活性物质的制造方法包括搅拌作为烷基硅酸盐的硅前体化合物的过渡金属前体化合物和作为锂前体化合物的锂金属的过渡金属前体化合物，其为金属乙酸盐或草酸盐，锂前体化合物为锂 乙酸盐或草酸锂，锰，铁，镍和钴; 通过干燥混合物获得粉末的步骤; 通过向粉末中加入碳源和非极性有机溶剂进行湿球磨，并进行湿球磨; 以及对湿球磨粉末进行热处理的步骤。