NEGATIVE ELECTRODE ACTIVE MATERIAL FOR ELECTRICAL DEVICE, NEGATIVE ELECTRODE FOR ELECTRICAL DEVICE AND ELECTRICAL DEVICE
    7.
    发明公开
    NEGATIVE ELECTRODE ACTIVE MATERIAL FOR ELECTRICAL DEVICE, NEGATIVE ELECTRODE FOR ELECTRICAL DEVICE AND ELECTRICAL DEVICE 有权
    负极活性物质的电气设备,负极,电力设备和电力设备

    公开(公告)号:EP2717357A1

    公开(公告)日:2014-04-09

    申请号:EP12789284.2

    申请日:2012-05-22

    IPC分类号: H01M4/38 C22C45/00 C22C45/10

    摘要: A negative electrode active material for an electric device includes an alloy containing Si in a range from greater than or equal to 17% by mass to less than 90% by mass, Ti in a range from 10% by mass to 83% by mass exclusive, Ge in a range from 0% by mass to 73% by mass exclusive, and inevitable impurities as a residue. The negative electrode active material can be obtained with a multi DC magnetron sputtering apparatus by use of, for example, Si, Ti and Ge as targets. An electric device employing the negative electrode active material can achieve long cycle life, and ensure a high capacity and improved cycle durability.

    摘要翻译: 在电气设备用负极活性物质包括在合金含有Si的范围为按质量计大于或等于17%至小于90质量%,钛的范围为10质量%至按质量计独家83% ,葛的范围为0质量%至73质量%排斥,和不可避免的杂质,为残余物。 负极活性材料可与由使用的多DC磁控溅射装置来获得,例如,硅,钛和Ge作为靶。 一种电气设备,用人负极活性物质,可以实现长的循环寿命,并确保高的容量和改善的循环耐久性。

    ELECTRICAL DEVICE
    10.
    发明授权

    公开(公告)号:EP3236519B1

    公开(公告)日:2018-11-28

    申请号:EP14908422.0

    申请日:2014-12-17

    摘要: The present invention is to provide a means capable of realizing sufficient cycle durability while sufficiently taking advantage of the high capacity characteristics which are a feature of a solid-solution positive electrode active material in an electric device such as a lithium ion secondary battery having a positive electrode using a solid-solution positive electrode active material. In an electric device having a power generating element including a positive electrode in which a positive electrode active material layer containing a positive electrode active material is formed on the surface of a positive electrode current collector, a negative electrode in which a negative electrode active material layer containing a negative electrode active material is formed on the surface of a negative electrode current collector, and a separator, the negative electrode active material layer contains a negative electrode active material represented by Formula (1), the positive electrode active material layer contains a positive electrode active material (solid-solution positive electrode active material) represented by Formula (2), and, at this time, one that has a structure in which a silicide phase containing a silicide of a transition metal is dispersed in a parent phase containing amorphous or low crystalline silicon as a main component, a predetermined composition, and a ratio value (B/A) of a diffraction peak intensity B of a silicide of a transition metal in a range of 2¸ = 37 to 45° to a diffraction peak intensity A of a (111) plane of Si in a range of 2¸ = 24 to 33° in a predetermined range in an X-ray diffraction measurement using a CuK±1 ray is used as a Si-containing alloy contained in the negative electrode active material layer and a solid solution having a predetermined composition or an oxide-coated solid solution in which a coating layer containing an oxide in a predetermined amount is formed on the particle surface of the solid solution is used as a solid-solution positive electrode active material contained in the positive electrode active material layer.