도전성 물질, 금속 산화물 또는 이들의 혼합물로 표면처리된 양극 활물질, 이를 이용한 양극과 리튬전지, 및 그제조방법
    2.
    发明公开
    도전성 물질, 금속 산화물 또는 이들의 혼합물로 표면처리된 양극 활물질, 이를 이용한 양극과 리튬전지, 및 그제조방법 失效
    正电极活性材料表面处理导电材料,金属氧化物或其混合物,用于防止内部阻抗增加并降低电极容量,并优化导电剂和粘合剂的添加量及其制备方法

    公开(公告)号:KR1020040096203A

    公开(公告)日:2004-11-16

    申请号:KR1020030029068

    申请日:2003-05-07

    Abstract: PURPOSE: A positive electrode active material for a lithium battery, its preparation method, a positive electrode containing the active material and a lithium battery containing the positive electrode are provided, to improve conductivity, high rate charge/discharge characteristics, high temperature characteristics and cycle lifetime characteristics. CONSTITUTION: The positive electrode active material comprises a conductive material, a metal oxide or their mixture formed on the surface of a positive electrode active material, in the shape of a thin film or cluster with a thickness of 1-300 nm. Preferably the conductive material is selected from the group consisting of acetylene black, carbon black, carbon nanotube and carbon nanofiber with a particle size of 1-300 nm, or the group consisting of Li, Al, Sn, Bi, Si, Sb, Ni, Cu, Ti, V, Cr, Mn, Fe, Co, Ag, Zr, Zn, Mo, Au, Ru, Pd, In, Pt, Ir and their alloys with a particle size of 1-300 nm; and the metal oxide is selected from the group consisting of Al2O3, MgO, CoO, NiO, Li2O, Li2CO3, TiO2, ZrO2, ZnO, Co3O4, BaTiO3, CuO, V2O5, V2O3, RuO2, SiO2, SnO2, Bi2O3, Sb2O3, Fe2O3, Fe3O4, Cr2O3, AgO, MoO3 and their mixtures with a particle size of 1-300 nm.

    Abstract translation: 目的:提供一种用于锂电池的正极活性物质及其制备方法,含有活性物质的正极和含有正极的锂电池,以提高导电性,高速率充放电特性,高温特性和循环 寿命特性。 构成:正极活性物质包含形成在正极活性物质的表面上的导体材料,金属氧化物或它们的混合物,厚度为1-300nm的薄膜或簇状。 优选导电材料选自乙炔黑,炭黑,碳纳米管和粒径为1-300nm的碳纳米纤维,或由Li,Al,Sn,Bi,Si,Sb,Ni ,Cu,Ti,V,Cr,Mn,Fe,Co,Ag,Zr,Zn,Mo,Au,Ru,Pd,In,Pt,Ir及其合金的粒径为1-300nm; 金属氧化物选自Al2O3,MgO,CoO,NiO,Li2O,Li2CO3,TiO2,ZrO2,ZnO,Co3O4,BaTiO3,CuO,V2O5,V2O3,RuO2,SiO2,SnO2,Bi2O3,Sb2O3,Fe2O3 ,Fe 3 O 4,Cr 2 O 3,AgO,MoO 3及其混合物,其粒度为1-300nm。

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