Positive electrode material for alkaline storage battery and method of producing the same

    公开(公告)号:EP0902490A2

    公开(公告)日:1999-03-17

    申请号:EP98116997.2

    申请日:1998-09-08

    IPC分类号: H01M4/52

    CPC分类号: H01M4/52

    摘要: The present invention provides a positive electrode material for alkaline storage batteries which has high energy density and causes little capacity reduction even when a charge/discharge cycle is repeated at high temperatures. The positive electrode material for alkaline storage batteries of the present invention comprises nickel hydroxide particles and a layers of cobalt oxide coating the nickel hydroxide particles. A valence of cobalt of the cobalt oxide is larger than 3.0, and the cobalt oxide contains sodium ions or potassium ions inside the crystal and further fixes lithium hydroxide or lithium ions.

    摘要翻译: 本发明提供一种具有高能量密度的碱性蓄电池用正极材料,即使在高温下重复充放电循环,也能够容易地减少容量。 本发明的碱性蓄电池用正极材料包含氢氧化镍粒子和涂覆氢氧化镍粒子的氧化钴层。 钴氧化物的钴的价数大于3.0,并且钴氧化物在晶体内含有钠离子或钾离子,并进一步固定氢氧化锂或锂离子。

    Alkaline storage battery and method for producing positive electrode thereof
    8.
    发明公开
    Alkaline storage battery and method for producing positive electrode thereof 失效
    Alkalische Speicherbatterie und Herstellungsverfahren von Positivelektrodedafür

    公开(公告)号:EP0774793A1

    公开(公告)日:1997-05-21

    申请号:EP96308260.7

    申请日:1996-11-15

    IPC分类号: H01M4/52

    摘要: The present invention provides an alkaline storage battery comprising a positive electrode (1) containing a nickel hydroxide active material and a compound oxide in a range of 2 wt% to 30 wt% to the amount of the nickel hydroxide. The compound oxide contains at least one transition metal element and at least one rare earth element or alkaline earth metal element. The compound oxide has conductivity of 10 -2 S/cm or higher at 25 °C and stability in an alkaline electrolyte. Consequently, the alkaline storage battery shows excellent characteristics in a long-term preservation at a high temperature, capacity restoration, and charge/discharge cycle life.

    摘要翻译: 本发明提供一种碱性蓄电池,其包含相对于氢氧化镍的量为2重量%〜30重量%的含有氢氧化镍活性物质和复合氧化物的正极(1)。 复合氧化物含有至少一种过渡金属元素和至少一种稀土元素或碱土金属元素。 复合氧化物在25℃下的电导率为10S / cm以上,在碱性电解液中的电导率稳定。 因此,碱蓄电池在高温,容量恢复和充放电循环寿命的长期保存中显示出优异的特性。