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    • 4. 发明授权
    • Cathode indentations in alkaline cell
    • 碱性电池阴极压痕
    • US06472099B1
    • 2002-10-29
    • US09593655
    • 2000-06-13
    • Tae-Won LeeShuming ZengKenneth R. TaylorGeorge CintraPhilip D. TrainerAlexander B. Shelekhin
    • Tae-Won LeeShuming ZengKenneth R. TaylorGeorge CintraPhilip D. TrainerAlexander B. Shelekhin
    • H01M1024
    • H01M6/085H01M4/661H01M4/663H01M4/70H01M6/08H01M2004/025
    • An alkaline cell having an anode comprising zinc and a cathode comprising manganese dioxide wherein the cathode is located annularly along the inside surface of the cell housing and has a plurality of indentations on the inside of its surface facing the cell interior. Each indentation has a wall defining a channel with an opening thereto running preferably in the direction of the cell's length. The channel and opening facing the cell interior filled with anode material. The cell can have an anode current collector, typically of metal, with at least a portion of its surface extending into the cathode indentation channel. The anode current collector can have a portion of its surface extending from a point within the anode and into the cathode indentation channel through said opening. The cell can include a cathode current collector comprising a sheet of conductive material such as a sheet of metal or graphite placed within the cathode, particularly within thick regions of the cathode. The cathode current collector can be used. in conduction with a conventional single nail anode current collector or in combination with the extended surface anode current collectors of the invention. Such alkaline cells exhibit improved performance, particularly under high power application.
    • 具有包含锌的阳极和包含二氧化锰的阴极的碱性电池,其中阴极沿着电池壳体的内表面环形定位,并且在其面向电池内部的表面的内侧上具有多个压痕。 每个压痕具有限定具有开口的通道的壁,其优选沿电池长度的方向延伸。 面向电池内部的通道和开口填充有阳极材料。 电池可以具有通常为金属的阳极集电器,其表面的至少一部分延伸到阴极压痕通道。 阳极集电器可以具有其表面的一部分从阳极内的点延伸通过所述开口的阴极凹陷通道。 电池可以包括阴极集电器,其包括导电材料片,例如放置在阴极内的金属片或石墨片,特别是在阴极的厚区域内。 可以使用阴极集电器。 与传统的单个指甲阳极集电器或与本发明的扩展的表面阳极集电器组合地传导。 这种碱性电池表现出改进的性能,特别是在高功率应用下。
    • 10. 发明授权
    • Alkaline cell with improved cathode
    • 改善阴极的碱性电池
    • US06596438B2
    • 2003-07-22
    • US09880651
    • 2001-06-13
    • Shuming Zeng
    • Shuming Zeng
    • H01M462
    • H01M4/625H01M4/043H01M4/06H01M4/08H01M6/08
    • An alkaline electrochemical cell having a cathode comprising manganese dioxide and conductive graphitized mesophase pitch-based carbon fibers having an increased BET surface area of between about 10 and 60 m2/g, desirably between about 10 and 50 m2/g, preferably between about 30 and 50 m2/g by heat treatment between 800 and 1200° C. with potassium hydroxide. The treated graphitized mesophase pitch-based carbon fibers can comprise between about 1 and 100 percent by weight of the total graphite material in the cathode, typically between about 5 and 50 percent by weight of the total graphite. The total graphite in the cathode desirably comprises between about 4 and 10 percent by weight of the cathode. The graphite can be the mixtures of the graphitized mesophase pitch-based carbon fibers with flaky crystalline graphites including expanded graphites. The graphitized mesophase pitch-based carbon fibers have a mean average diameter typically between about 1 and 10 micron. The use of said carbon fibers in the cathode increases cathode conductivity and results in improved cell performance.
    • 具有阴极的碱性电化学电池,其具有包含二氧化锰和导电石墨化中间相沥青基碳纤维,其具有在约10和60m 2 / g之间,优选在约10和50m 2 / g之间,优选在约30和 通过用氢氧化钾在800-1200℃之间热处理50m 2 / g。 经处理的石墨化中间相沥青基碳纤维可以占阴极中总石墨材料的约1至100重量%,通常为总石墨重量的约5至50重量%。 阴极中的总石墨理想地占阴极重量的约4%至10%。 石墨可以是石墨化中间相沥青基碳纤维与片状晶体石墨(包括膨胀石墨)的混合物。 石墨化中间相沥青基碳纤维的平均直径通常在约1微米至10微米之间。 在阴极中使用所述碳纤维会增加阴极电导率并导致改善的电池性能。