公开(公告)号：US20140295265A1

公开(公告)日：2014-10-02

申请号：US14242776

申请日：2014-04-01

Applicant: Dongguan Amperex Technology Limited

Inventor： Conghui YOU ,  Yanjie XU ,  Fubiao CAO ,  Hongxin FANG ,  Baiqing ZHANG

IPC: H01M4/36 ,  H01M4/485

CPC classification number: H01M10/4235

Abstract: The present disclosure provides a lithium-rich electrode plate of a lithium-ion battery and a preparation method thereof. The lithium-rich electrode plate comprises a collector; a film containing an active material and forming on the collector, and forming an elementary electrode plate together with the collector; and a porous lithium sheet covering on the film, wherein a resulting capacity of the porous lithium sheet matches a planned lithium-supplemental capacity to an anode of a lithium-ion battery. The present disclosure can accurately control lithium-supplemental quantity to the anode, improve lithium-supplemental uniformity, improve the first coulombic efficiency, energy density, and electrochemical performance of the battery, and decrease deformation of the cell, furthermore the method can be performed simply and the cost thereof is low.

Abstract translation: 本公开内容提供了一种锂离子电池的富锂电极板及其制备方法。 富锂电极板包括集电体; 含有活性物质并在集电体上形成的膜，与集电体一起形成元件电极板; 以及覆盖在所述膜上的多孔锂片，其中所述多孔锂片的所得容量与锂离子电池的阳极匹配计划的锂补充容量。 本公开可以精确地控制锂的补充量，提高锂的补充均匀性，提高电池的第一库仑效率，能量密度和电化学性能，并减少电池的变形，此外该方法可以简单地进行 其成本低。