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    • 9. 发明授权
    • Alkaline cell with cathode surface protector
    • 带阴极表面保护膜的碱性电池
    • US06514637B2
    • 2003-02-04
    • US09740346
    • 2000-12-18
    • Jack TregerSean SargeantJohn Licata
    • Jack TregerSean SargeantJohn Licata
    • H01M212
    • H01M2/145H01M2/1653H01M2/1673H01M6/06H01M12/06
    • An electrochemical separator is formed insitu on an electrode surface within an electrochemical cell, preferably an alkaline cell cathode surface. The alkaline cell comprises a zinc anode, a and potassium hydroxide electrolyte. The cathode may comprise a cathode comprising manganese dioxide. The separator may be formed by coating an electrode surface preferably with a low molecular weight copolymer of polyvinyalcohol and polyvinylacetate. The film can be coagulated to form a permeable separator uniformly conforming to and covering the electrode surface irrespective of the shape and contour of the electrode. A separate protector disk can be inserted onto the top surface of the cathode to protect the cathode from shorting in the event that imperfections in the separator surface develop. The protector disk can have a protruding lip which surrounds and protects the inside corner edge of the cathode.
    • 在电化学电池,优选碱性电池阴极表面中的电极表面上形成电化学分离器。 碱性电池包括锌阳极,氢氧化钾和氢氧化钾电解质。 阴极可以包括包含二氧化锰的阴极。 隔膜可以通过优选用聚乙烯醇和聚乙酸乙烯酯的低分子量共聚物涂覆电极表面而形成。 不管电极的形状和轮廓如何,可以使膜凝结形成均匀地均匀地覆盖电极表面的可渗透分离器。 如果分离器表面的缺陷发展,则可以将独立的保护盘插入阴极的顶表面,以保护阴极免于短路。 保护盘可以具有突出的唇缘,其围绕并保护阴极的内角部边缘。