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    • 4. 发明公开
    • Electrode assembly and secondary battery including the same
    • 电极组件和包括其的二次电池
    • EP2299532A1
    • 2011-03-23
    • EP10177197.0
    • 2010-09-16
    • Samsung SDI Co., Ltd.
    • Song, Sooan
    • H01M10/052H01M10/0585
    • H01M10/052H01M10/0585
    • The invention relates to an electrode assembly for a secondary battery which reduces the swelling of the battery. The electrode assembly according to the invention comprises a positive electrode (110) having a positive electrode coating portion (112) on at least one surface thereof, a negative electrode (120) having a negative electrode coating portion (122) including lithium titanium oxide on at least one surface thereof, and a separator (130) disposed between the positive electrode and the negative electrode, wherein the area of the positive electrode coating portion is larger than that of the negative electrode coating portion. This arrangement means that all of the lithium titanium oxide coated on the negative electrode participates in the charge/discharge operations, thereby reducing the reaction between the lithium titanium oxide and electrolyte and the resultant generation of gas.
    • 用于二次电池的电极组件技术领域本发明涉及一种用于减小电池的膨胀的二次电池的电极组件 根据本发明的电极组件包括在其至少一个表面上具有正电极涂覆部分(112)的正电极(110),具有负电极涂覆部分(122)的负电极(120),所述负电极涂覆部分包括在其上的锂钛氧化物 其至少一个表面以及设置在正极和负极之间的隔板(130),其中正极涂覆部分的面积大于负极涂覆部分的面积。 这种布置意味着涂覆在负极上的所有锂钛氧化物都参与充电/放电操作,由此减少锂钛氧化物和电解质之间的反应以及所产生的气体。