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    • 6. 发明公开
    • 리튬이차전지용 구형 양극 활물질 제조방법
    • 制备用于锂二次电池的材料球形形状活性物质的方法
    • KR1020100061155A
    • 2010-06-07
    • KR1020080120056
    • 2008-11-28
    • 현대자동차주식회사전자부품연구원
    • 김경수김사흠김동건김영준송준호
    • H01M4/04H01M4/02H01M4/58H01M10/36
    • H01M4/5825H01M4/621H01M4/623H01M4/625H01M10/052
    • PURPOSE: A method for manufacturing a spherical positive active material is provided to solve environmental contamination according to the use of an organic solvent for a mechanical pulverizing method and a sol-gel method and to manufacturing the positive active material having excellent conductivity by adding carbon particles. CONSTITUTION: A method for a spherical positive active material for a secondary lithium battery comprises the following steps: manufacturing a mixed material including a lithium-based compound, transition metal, phosphate-based compound, and carbon source; making a mixed solution by uniformly dissolving the mixed material in ultrapure water; rapidly freezing the mixed solution; manufacturing a spherical precursor of high density by sublimating the frozen mixed solution; and heat-treating the spherical precursor of high density.
    • 目的:提供一种制造球形正极活性物质的方法,以根据使用机械粉碎法和溶胶 - 凝胶法的有机溶剂来解决环境污染,并通过添加碳粒子制造具有优异导电性的正极活性物质 。 构成:用于二次锂电池的球形正极活性物质的方法包括以下步骤:制备包含锂基化合物,过渡金属,磷酸酯基化合物和碳源的混合材料; 通过将混合材料均匀地溶解在超纯水中制成混合溶液; 迅速冷冻混合溶液; 通过升华冷冻混合溶液制造高密度球形前体; 并对高密度的球形前体进行热处理。
    • 10. 发明公开
    • 리튬 이차전지 양극재료 및 이의 제조 방법
    • 锂二次电池用阴极材料及其制造方法
    • KR1020130118672A
    • 2013-10-30
    • KR1020120041749
    • 2012-04-20
    • 현대자동차주식회사서울대학교산학협력단
    • 김동건김사흠안승호김성욱강기석
    • H01M4/58H01M4/1397C01B25/45H01M10/052
    • Y02E60/122Y02P70/54Y02T10/7011H01M4/5825C01B25/45C01P2006/40H01M4/136H01M4/625H01M10/052Y02E60/12
    • PURPOSE: A cathode material is provided to realize a high capacitance and a high power by inserting a lithium ion into a cathode material through an ion exchange method, thereby being variously applied to a high-capacity lithium secondary battery for an electric car, a mobile device, a high-capacity power storage system, and the like. CONSTITUTION: A cathode material for a lithium secondary battery includes a lithium transition metal based fluorophosphates compound, which is represented by Chemical Formula 1 of Li2MPO4F and has a crystalline structure of a P2_1/n space group. Here, P means that lattice points exist at only eight vertexes in a parallelepiped structure; 2_1 means the presence of a two-fold rotation screw axis by a translation of 1/2 of a lattice vector; and n means the presence of a glide plane by a translation of 1/2 of the diagonal length of a unit lattice in a diagonal direction. In Chemical Formula 1, M is a transition metal selected from Mn, Sc, Ti, V, Cr, Fe, Co, Ni, and Cu.
    • 目的:提供一种通过离子交换法将锂离子插入阴极材料中以实现高电容和高功率的阴极材料,从而被各种应用于用于电动汽车的高容量锂二次电池,移动电话 装置,大容量蓄电系统等。 构成:用于锂二次电池的阴极材料包括由Li2MPO4F的化学式1表示的具有P2_1 / n空间群的晶体结构的锂过渡金属基氟磷酸盐化合物。 这里,P表示在平行六面体结构中只有八个顶点存在晶格点; 2_1表示通过平移1/2的晶格矢量存在双重旋转螺旋轴; n表示沿着对角线方向的单位格子的对角线长度的1/2的平移,存在滑行平面。 在化学式1中,M是选自Mn,Sc,Ti,V,Cr,Fe,Co,Ni和Cu中的过渡金属。