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    • 2. 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。
    • 5. 发明公开
    • 이차전지용 양극재료 및 이의 제조방법
    • 二次电池用阴极材料及其制造方法
    • KR1020130033891A
    • 2013-04-04
    • KR1020110097846
    • 2011-09-27
    • 현대자동차주식회사전자부품연구원
    • 김동건김사흠김영준송준호조우석김점수김상민
    • H01M4/58H01M10/052H01M4/62
    • H01M4/136H01M4/366H01M4/5825H01M4/625H01M10/052Y02E60/122Y02P70/54
    • PURPOSE: A positive electrode material for secondary batteries is provided to obtain excellent charging and discharging performance by securing a diffusion path for lithium in the positive electrode material, thereby improving electrochemical performance of secondary batteries. CONSTITUTION: A positive electrode material includes a manganese-based fluorinated phosphoric acid compound represented by chemical formula, Li_xNa_(2-x)MnPO_4F. A manufacturing method of the positive electrode material comprises a step of uniformly mixing sodium oxide or a precursor thereof, manganese oxide or a precursor thereof, phosphoric oxide or a precursor thereof, and fluoride oxide or a precursor thereof, pre-treating the mixture, and synthesizing Na_2MnPO_4F by sintering; and a step of inserting lithium into the positive electrode material and synthesizing Li_xNa_(2-x)MnPO_4F by using an ion exchange method.
    • 目的:提供用于二次电池的正极材料,以通过确保正极材料中的锂的扩散路径来获得优异的充放电性能,从而提高二次电池的电化学性能。 构成:正极材料包括由化学式Li_xNa_(2-x)MnPO_4F表示的锰基氟化磷酸化合物。 正极材料的制造方法包括将氧化钠或其前体,氧化锰或其前体,氧化磷或其前体,氟化物或其前体均匀混合的步骤,对所述混合物进行预处理,以及 通过烧结合成Na_2MnPO_4F; 以及将锂插入正极材料中并通过使用离子交换方法合成Li_xNa_(2-x)MnPO_4F的步骤。