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    • 8. 发明公开
    • 리튬이차전지 양극활물질용 전구체인 복합금속산화물을 갖는 양극활물질 및 제조방법 그리고, 그 양극활물질을 포함한 리튬이차전지
    • 用于锂离子电池阴极活性材料的前体,阴极活性材料和使用其的锂电池及其制备方法
    • KR1020130043938A
    • 2013-05-02
    • KR1020110108140
    • 2011-10-21
    • 한국교통대학교산학협력단
    • 손종태전효진
    • H01M4/1391H01M4/505H01M4/525H01M10/052
    • Y02E60/122Y02P70/54Y02T10/7011C01G45/1257C01G51/42C01G53/006C01P2006/40H01M4/131H01M4/505H01M4/525H01M10/0525
    • PURPOSE: A manufacturing method of a positive electrode active material is provided to have a uniform particle size and improve electrochemical properties by mixing a lithium salt and a precursor which has a controlled surface. CONSTITUTION: A manufacturing method of a positive electrode active material for a lithium secondary battery comprises following steps: a step(S1) of manufacturing a metal aqueous solution by mixing three kinds of material selected from nickel, cobalt, iron, manganese and aluminum; a step(S2) of obtaining a precipitate by putting the mixture into a continuous reactor and stirring the mixture after mixing sodium carbonate as a precipitator and an ammonia solution as a co-precipitator in the metal aqueous solution; a step of manufacturing a precursor by filtering, washing, and drying the precipitate; and a step(S3) of mixing the precursor and a lithium salt. [Reference numerals] (AA) Start; (BB) End; (S1) Manufacture a metal aqueous solution; (S2) Manufacture a complex metal oxide as a precursor by mixing a precipitator and co-precipitator with the metal aqueous solution; (S3) Manufacture positive electrode active material by mixing the precursor with lithium salt
    • 目的:通过混合锂盐和具有受控表面的前体,提供正极活性物质的制造方法以具有均匀的粒径并提高电化学性能。 构成:锂二次电池用正极活性物质的制造方法包括以下步骤:通过混合选自镍,钴,铁,锰和铝中的三种材料制造金属水溶液的步骤(S1) 通过将混合物放入连续反应器中并在混合碳酸钠作为沉淀器并在氨水溶液中作为共沉淀器在金属水溶液中搅拌后,获得沉淀物的步骤(S2); 通过过滤,洗涤和干燥沉淀物来制造前体的步骤; 和混合前体和锂盐的步骤(S3)。 (附图标记)(AA)开始; (BB)结束; (S1)制造金属水溶液; (S2)通过将沉淀器和共沉淀器与金属水溶液混合来制造复合金属氧化物作为前体; (S3)通过将前体与锂盐混合来制造正极活性物质