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    • 95. 发明公开
    • ALKALINE BATTERY
    • 碱性电池
    • EP2088636A1
    • 2009-08-12
    • EP07829728.0
    • 2007-10-12
    • Panasonic Corporation
    • NUNOME, JunKATO, FumioSHIMAMURA, Harunari
    • H01M4/06H01M4/50
    • H01M4/32H01M4/26H01M4/50H01M2004/021H01M2004/027
    • An alkaline battery includes a positive electrode containing as a positive electrode active material manganese dioxide and nickel oxyhydroxide, and when the manganese dioxide is heated, a weight reduction percentage of the manganese dioxide at a temperature within a range of 100 °C or more and 400 °C or less is 3.8 wt% or more. When the manganese dioxide is subjected to X-ray powder diffraction measurement, a peak position of a diffraction plane with Miller indices of (110) is 20.5 degrees or more and 21.7 degrees or less and a ratio (I(130)/I(021)) of a peak intensity I (130) of a diffraction plane with miller indices (130) to a peak intensity I(021) of a diffraction plane with Muller indices of (021) is 0.1 or less.
    • 本发明提供一种碱性电池,其特征在于,具备:正极,其含有二氧化锰和羟基氧化镍作为正极活性物质,在二氧化锰被加热时,二氧化锰的重量减少率在100℃以上且400 ℃以下为3.8重量%以上。 当二氧化锰经受X-射线粉末衍射测量时,具有米勒指数(110)的衍射面的峰位置为20.5度以上且21.7度以下,且比率(I(130)/ I(021) )为米勒指数(130)的衍射面的峰强度I(130)与穆勒指数(021)的衍射面的峰强度I(021)之差为0.1以下。