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    • 2. 发明授权
    • Sealed nickel-zinc primary cell
    • 密封镍锌原电池
    • US07763383B2
    • 2010-07-27
    • US10514556
    • 2003-05-28
    • Kunihiko MiyamotoShuichiro IrieEiki KashiwazakiTeiji Okayama
    • Kunihiko MiyamotoShuichiro IrieEiki KashiwazakiTeiji Okayama
    • H01M4/50
    • H01M4/62H01M4/06H01M4/364H01M4/52H01M6/08H01M2010/4292
    • The object of the invention is to provide an alkali primary battery being excellent in high rate discharge characteristics with less increase of the inner pressure by generating hydrogen in the overdischarge process. The invention provides a sealed nickel zinc primary battery comprising at least a positive electrode having a higher oxide of nickel as a positive electrode active substance, a negative electrode having zinc or an alloy thereof as a negative electrode active substance, a separator and an electrolyte solution housed in a vessel, wherein manganese dioxide is added in a proportion of 3 to 7% by mass relative to the higher oxide of nickel in the positive electrode, and the ratio between the theoretical capacity of the negative electrode to the theoretical capacity of the positive electrode (the theoretical capacity of the negative electrode/theoretical capacity of the positive electrode) is in the range of 1.2 to 1.0.
    • 本发明的目的是提供一种具有优异的高倍率放电特性的碱性一次电池,其中在过放电过程中产生氢气,内部压力增加较少。 本发明提供一种密封的镍锌一次电池,其至少包括具有较高镍的氧化物作为正极活性物质的正极,具有锌的负极或其合金作为负极活性物质,隔膜和电解质溶液 容纳在容器中,相对于正极中的较高的镍的氧化物,以相对于正极的镍的较高的氧化物为3〜7质量%的比例添加二氧化锰,负极的理论容量与正极的理论容量之比 电极(负极的理论容量/正极的理论容量)在1.2〜1.0的范围内。
    • 9. 发明授权
    • ACTIVE MATERIAL FOR POSITIVE ELECTRODE FOR ALKALINE SECONDARY CELL AND METHOD FOR PRODUCING THE SAME, AND ALKALINE SECONDARY CELL USING THE ACTIVE MATERIAL FOR POSITIVE ELECTRODE AND METHOD FOR PRODUCING THE SAME
    • 用于碱性二次电池的正电极的活性材料及其制造方法以及使用活性物质的碱性电极的碱性二次电池及其制造方法
    • US06528209B2
    • 2003-03-04
    • US09749789
    • 2000-12-28
    • Kunihiko MiyamotoNaomi Bando
    • Kunihiko MiyamotoNaomi Bando
    • H01M432
    • H01M4/52H01M10/28H01M10/342
    • Provided is a active material for positive electrode for an alkaline secondary cell, which advantageously exhibits improved overdischarge characteristics, improved utilization of the active material and an improved effect of suppressing the rise in cell internal pressure, a method for producing the same, and an alkaline secondary cell using the above active material for positive electrode, especially a nickel-hydrogen secondary cell. The above active material comprises nickel hydroxide particles each having a surface to which a cobalt oxide sticks, wherein the cobalt oxide contains 20 to 40% by mole of cobalt(II) oxide, wherein the nickel hydroxide particles form an eutectic together with Co and Zn or/and Y, and the Co content of the eutectic is 2% by mass or less, and the nickel hydroxide particles have a value of a half width of the peak ascribed to the (101) crystal face diffraction of 0.8°/2&thgr;(Cu—K&agr;) or more as measured by powder X-ray diffractometry.
    • 本发明提供一种碱性二次电池用正极活性物质,其有利地具有改善的过放电特性,改善了活性物质的利用率和改善了抑制电池内部压力上升的效果,其制备方法和碱 使用上述正极活性物质,特别是镍 - 氢二次电池的二次电池。上述活性物质包含氢氧化钴颗粒,每个氧化钴具有钴氧化物粘附的表面,其中氧化钴含有20〜40摩尔% 氧化钴(II),其中氢氧化镍颗粒与Co和Zn或/和Y一起形成共晶,共晶的Co含量为2质量%以下,氢氧化镍颗粒的值为一半 归属于(101)晶面衍射的峰值的宽度,通过粉末X射线衍射法测量为0.8°/2θ(Cu-Kalpha)或更大。