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    • 3. 发明公开
    • 불소화합물이 첨가된 리튬이차전지 양극 활물질 및 그제조방법
    • 用于锂二次电池添加氟化合物的阴极活性材料及其生产方法
    • KR1020060133615A
    • 2006-12-27
    • KR1020050053304
    • 2005-06-21
    • 대정화금주식회사선양국
    • 선양국한정민
    • H01M4/58H01M4/02H01M4/04
    • H01M4/5815H01M4/485H01M4/505H01M4/525H01M4/58H01M4/582H01M4/5825H01M4/62H01M10/052
    • Provided are a positive electrode active material for a lithium secondary battery to improve the charge/discharge characteristics, lifetime characteristics, high voltage characteristics and high rate characteristics of a battery, and its preparation method. The positive electrode active material contains a fluorine compound in the form of a complex in a positive electrode active material. The method comprises the steps of adding a solution wherein F is dissolved to a fine powder element precursor solution of high dispersity to react it at 50-150 deg.C for 1-48 hours, thereby preparing a fluorine compound fine powder in the form of a complex having a high dispersity; drying the fluorine compound fine powder at 110 deg.C for 6-24 hours; heat treating the dried one at 150-900 deg.C for 1-20 hours under the oxidative or reductive condition or in vacuum; and adding 0.05-10 parts by weight of the heat treated one to 100 parts by weight of a positive electrode active material and mixing them uniformly.
    • 提供一种用于锂二次电池的正极活性物质及其制备方法,其特征在于提高电池的充放电特性,寿命特性,高电压特性,高电流特性。 正极活性物质在正极活性物质中含有络合物形式的氟化合物。 该方法包括以下步骤:将F溶解到高分散度的细粉末前体溶液中,在50-150℃下反应1-48小时,由此制备氟化合物细粉末 具有高分散性的复合物; 将氟化合物细粉末在110℃干燥6-24小时; 在氧化或还原条件下或真空中,将干燥的物质在150-900℃下热处理1-20小时; 并加入0.05-10重量份的热处理1至100重量份的正极活性物质并均匀混合。
    • 7. 发明公开
    • 비정질의 티탄산바륨(BaTiO₃) 전구체의 제조 방법
    • 制备无定形钛酸钡(BaTiO3)前体的方法
    • KR1020040013648A
    • 2004-02-14
    • KR1020020046658
    • 2002-08-07
    • 대정화금주식회사
    • 이중철이우영
    • C01G23/04
    • C01G23/006C01P2002/02C01P2004/64
    • PURPOSE: Provided is a simplified method for preparing an amorphous barium titanate precursor, from which barium titanate ultrafine particles having uniform Ba-Ti bonds useful as a ferroelectric material are obtained. CONSTITUTION: The method for preparing an amorphous barium titanate(BaTiO3) precursor comprises the steps of: dissolving 1 mol of barium chloride(BaCl2.2H2O) and 9-20 mol of urea(CO(NH2)2) into the least amount of water to form a mixed solution A; mixing 1 mol of titanium tetrachloride(TiCl4) with 4-6 mol of nitric acid(HNO3) and heating the mixture to form a mixed solution B; mixing the mixed solution A with the mixed solution B and carrying out the combustion of the resultant mixture at a furnace maintained at a temperature of 380-450 deg.C.
    • 目的:提供一种制备无定形钛酸钡前体的简化方法,由此得到具有均匀的Ba-Ti键的钛酸钡超微粒子,可用作铁电体材料。 构成:制备无定形钛酸钡(BaTiO 3)前体的方法包括以下步骤:将1mol氯化钡(BaCl 2·2H 2 O)和9-20mol尿素(CO(NH 2)2)溶解到最少量的水中 以形成混合溶液A; 将1摩尔四氯化钛(TiCl 4)与4-6摩尔硝酸(HNO 3)混合并加热混合物形成混合溶液B; 将混合溶液A与混合溶液B混合,并在保持在380-450℃温度的炉中进行所得混合物的燃烧。
    • 8. 发明公开
    • 칼-피셔 전기량 적정용 일액형 시약
    • 一卡通类型试剂,用于卡尔 - 渔业组合测定
    • KR1020040000800A
    • 2004-01-07
    • KR1020020035751
    • 2002-06-25
    • 대정화금주식회사
    • 이중철이우영
    • G01N31/16
    • PURPOSE: A one-pack type reagent for the Karl-Fisher coulometric titration is provided, to determine the moisture content of a solid sample with excellent precision and reproducibility by the Karl-Fisher coulometric titration. CONSTITUTION: The one-pack type reagent comprises 1.5-3 mol of imidazole; 13.5-24.4 g of iodine; 63.2-69.0 g of choline chloride; about 1-2 mol of dry sulfurous acid gas; and the balance volume of a solvent per 1,000 mL of the total volume. Preferably the solvent is methanol. Also the one-pack type reagent comprises 1.5-3 mol of imidazole; 13.5-24.0 g of iodine; 63.2-69.0 g of choline chloride; about 1-2 mol of dry sulfurous acid gas; and the balance volume of a solvent per 1,000 mL of the total volume. Preferably the solvent is a mixture of chloroform and methanol in the ratio of 65-70 : 30-35 by volume.
    • 目的:提供Karl-Fisher电量滴定法的单包装试剂,通过Karl-Fisher电量滴定法测定固体样品的水分含量,具有出色的精度和重现性。 构成:单组分试剂含有1.5-3mol咪唑; 13.5-24.4克碘; 63.2-69.0g氯化胆碱; 约1-2摩尔干硫酸气; 和每1000mL总体积的溶剂的平衡体积。 溶剂优选为甲醇。 单包装试剂也包含1.5-3mol咪唑; 13.5-24.0克碘; 63.2-69.0g氯化胆碱; 约1-2摩尔干硫酸气; 和每1000mL总体积的溶剂的平衡体积。 溶剂优选为氯仿和甲醇的混合物,体积比为65-70:30-35。