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    • 58. 发明公开
    • ELECTROCHEMICAL CELL
    • 电化学电池
    • EP1436851A2
    • 2004-07-14
    • EP02781198.3
    • 2002-10-01
    • TIMCAL AG
    • SPAHR, Michael, E.WILHELM, Henri
    • H01M4/62C01B31/04C01B31/00
    • Electrochemical cell having a positive electrode comprising electrolytic manganese dioxide, chemical manganese dioxide, lithiated manganates, cobaltates or nickelates as electroactive component and graphite as a conductive additive, characterized in that said conductive additive comprises at least a thermally expanded graphite in its vermicular form, and wherein the initial graphite particle expansion degree of said expanded graphite in z-direction of the particle is greater than 80 times of its initial z-dimension, and preferably within the range of 200 to 500 times of its initial z-dimension.
    • 具有包含电解二氧化锰,化学二氧化锰,锂化锰酸盐,钴酸盐或镍酸盐作为电活性成分和石墨作为导电添加剂的正电极的电化学电池,其特征在于所述导电添加剂至少包含蠕虫状热膨胀石墨, 其中所述膨胀石墨在所述颗粒的z方向上的初始石墨颗粒膨胀度大于其初始z尺寸的80倍,并且优选地在其初始z尺寸的200至500倍的范围内。