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    • 2. 发明授权
    • Method of manufacturing electrode for secondary cell
    • 二次电池用电极的制造方法
    • US07294359B2
    • 2007-11-13
    • US10122367
    • 2002-04-16
    • Daizo JitoHisaki Tarui
    • Daizo JitoHisaki Tarui
    • B05D5/12
    • H01M4/0421H01M2/26H01M4/04H01M4/0402H01M4/0404H01M6/10H01M10/05
    • A method of manufacturing an electrode for a secondary cell capable of readily forming an active material layer only on a necessary portion of a collector by a method supplying raw material from a gas phase is obtained. This method of manufacturing an electrode for a secondary cell comprises steps of forming a mask layer containing a material reduced in adhesion to a collector due to a high temperature for forming an active material layer on a prescribed region of the collector, forming the active material layer on the collector and on the mask layer by a method supplying raw material from a gas phase and removing the mask layer and part of the active material layer formed on the mask layer. Thus, the mask layer is readily separated from the collector after the active material layer is formed by the method supplying raw material from a gas phase. Consequently, the mask layer and part of the active material layer formed on the mask layer are so readily removed that the active material layer is readily located only on a necessary portion of the collector.
    • 获得了通过从气相提供原料的方法仅在集电体的必要部分上容易地形成活性物质层的二次电池用电极的制造方法。 这种制造二次电池用电极的方法包括以下步骤:由于在集电体的规定区域上形成活性物质层的高温而形成含有与集电体粘合性降低的材料的掩模层,形成活性物质层 在集电体和掩模层上通过从气相提供原料的方法,并且去除掩模层和形成在掩模层上的部分活性材料层。 因此,在通过从气相供给原料的方法形成活性物质层之后,掩模层容易与集电体分离。 因此,形成在掩模层上的掩模层和活性物质层的一部分被容易地去除,使得活性物质层容易地位于集电体的必要部分上。
    • 7. 发明授权
    • Lithium secondary battery
    • 锂二次电池
    • US07897284B2
    • 2011-03-01
    • US11527716
    • 2006-09-27
    • Kei KobayashiHiromasa YagiMasaki HiraseDaizo JitoKatsunobu Sayama
    • Kei KobayashiHiromasa YagiMasaki HiraseDaizo JitoKatsunobu Sayama
    • H01M4/02H01M4/58H01M4/62H01M4/64H01M4/66H01M4/68H01M4/72
    • H01M10/0587H01M4/134H01M4/366H01M4/62H01M4/661H01M4/70H01M2004/021H01M2004/027
    • A lithium secondary battery is provided with a positive electrode, a negative electrode (1), a separator interposed between the positive and negative electrodes, and an electrode assembly having the negative electrode (1), the positive electrode, and the separator. The negative electrode (1) has a negative electrode current collector (11) and negative electrode active material layers (12), (13) formed on respective surfaces of the negative electrode current collector (11). The negative electrode active material layers are composed of an alloy containing silicon, which intercalates and deintercalates lithium, and iron, which does not intercalate or deintercalate lithium. At least a portion of the electrode assembly has a curved portion in which the negative electrode active material layer (13) disposed inward relative to the negative electrode current collector contains a higher concentration of the iron than the negative electrode active material layer (12) disposed outward relative to the negative electrode current collector.
    • 锂二次电池设置有正极,负极(1),介于正极和负极之间的隔板以及具有负极(1),正极和隔板的电极组件。 负极(1)具有形成在负极集电体(11)的各表面上的负极集电体(11)和负极活性物质层(12),(13)。 负极活性物质层由含有硅的合金,其插入和脱嵌锂,以及不插入或脱嵌锂的铁。 电极组件的至少一部分具有弯曲部分,其中相对于负极集电体向内设置的负极活性材料层(13)含有比设置的负极活性材料层(12)更高的铁浓度 向外相对于负极集电体。