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    • 2. 发明授权
    • Active materials for the positive electrode in alkaline storage batteries
    • 碱性蓄电池正极活性物质
    • US6042753A
    • 2000-03-28
    • US165131
    • 1998-10-02
    • Hidekatsu IzumiHiroyuki SakamotoHirokazu KimiyaYoichi IzumiIsao Matsumoto
    • Hidekatsu IzumiHiroyuki SakamotoHirokazu KimiyaYoichi IzumiIsao Matsumoto
    • H01M4/32H01M4/52H01B1/02H01B1/06
    • H01M4/52H01M4/32
    • Active materials for positive electrodes in alkaline storage batteries excellent in capacity density, discharge voltage, and high rate discharge characteristics can be provided by coating the surface of the active material powder with an .alpha.-like Al-substituted Ni(OH).sub.2. Moreover, active materials excellent in capacity density, discharge voltage and high rate discharge characteristics, and besides in high-temperature charging efficiency and/or charge and discharge characteristics can be provided by dissolving in solid state and/or coprecipitated state at least one different metal element selected from Ca, Cr, Y, Ti and Co in the .alpha.-like Al-substituted Ni(OH).sub.2 layer. Furthermore, active materials excellent in capacity density, discharge voltage and high rate discharge characteristics, and besides in charge and discharge characteristics can be provided by coating with a Co oxide the surface of the active material powder coated with the .alpha.-like Al-substituted Ni(OH).sub.2.
    • 通过用α型Al取代的Ni(OH)2涂覆活性物质粉末的表面,可以提供容量密度,放电电压和高放电特性优异的碱性蓄电池中的正极活性物质。 此外,可以通过将固体和/或共沉淀状态溶解在至少一种不同的金属中来提供容量密度,放电电压和高放电特性优异的活性材料,以及高温充电效率和/或充放电特性 元素选自Ca,Cr,Y,Ti和Co中的α型Al取代的Ni(OH)2层。 此外,可以通过用Co氧化物涂覆活性材料粉末的涂覆有α样Al取代的Ni的表面来提供容量密度,放电电压和高放电特性优异的活性材料,以及充放电特性 (OH)2。
    • 3. 发明授权
    • Manufacturing method of active materials for the positive electrode in alkaline storage batteries
    • 碱性蓄电池正极活性物质的制造方法
    • US06284215B1
    • 2001-09-04
    • US09560296
    • 2000-04-27
    • Hiroyuki SakamotoHidekatsu IzumiHirokazu KimiyaYoichi IzumiIsao Matsumoto
    • Hiroyuki SakamotoHidekatsu IzumiHirokazu KimiyaYoichi IzumiIsao Matsumoto
    • C01G4900
    • H01M4/52
    • A process for producing positive electrode active material includes feeding an aqueous nickel salt solution, aqueous solutions of different kinds of metals, aqueous solution containing ammonium ions and aqueous alkali solution each independently and simultaneously into a reaction vessel such that the amount of alkali metal is 1.9-2.3 moles relative to 1 mole of the total amount of nickel and different kinds of metals and the amount of ammonium ions is 2 moles or more relative to 1 mole of the total amount of nickel and different kinds of metals, the pH in the vessel is 11-13, the temperature in the vessel is 30-60° C. and the average residence time is 20-50 hours. Further, in the process step of continuously growing the complex metal oxide particles from the salts of a plurality of metal elements through a plurality of successive reaction-deposition stages, the compositions and/or the kinds of the salts of metal element groups used for forming the oxide in the reaction-deposition stages adjacent to each other are made to be different from each other.
    • 制造正极活性物质的方法包括将镍盐水溶液,不同种类金属的水溶液,含有铵离子的水溶液和碱水溶液各自独立同时投入到反应容器中,使得碱金属的量为1.9 相对于1摩尔镍的总量和不同种类的金属,相对于1摩尔镍和不同种类的金属,铵离子的量为2摩尔或更大,相对于1摩尔的-2.3摩尔,容器中的pH 为11-13,容器中的温度为30-60℃,平均停留时间为20-50小时。 此外,在通过多个连续反应沉积阶段从多个金属元素的盐连续生长复合金属氧化物颗粒的工艺步骤中,用于形成的金属元素基团的盐的组成和/或种类 使彼此相邻的反应沉积阶段中的氧化物彼此不同。