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    ANODE AND SECONDARY BATTERY INCLUDING SAME
    1.
    发明公开
    ANODE AND SECONDARY BATTERY INCLUDING SAME 审中-公开

    公开(公告)号：EP3343674A1

    公开(公告)日：2018-07-04

    申请号：EP17828010.3

    申请日：2017-07-14

    申请人： LG Chem, Ltd.

    发明人： LEE, Jung Pil ,  LEE, Hee Won

    IPC分类号： H01M4/13 ,  H01M4/36

    摘要： The present invention relates to a negative electrode and a secondary battery including the same, and particularly, to a negative electrode which includes a current collector; a first active material layer disposed on the current collector and including at least one concave portion exposing a portion of the current collector; a stress-relaxing portion disposed in the concave portion; and a second active material layer disposed on the first active material layer and the stress-relaxing portion and separated from the current collector, and a secondary battery including the same.

    SECONDARY BATTERY CAPACITY RECOVERY METHOD AND SECONDARY BATTERY CAPACITY RECOVERY APPARATUS
    2.
    发明公开
    SECONDARY BATTERY CAPACITY RECOVERY METHOD AND SECONDARY BATTERY CAPACITY RECOVERY APPARATUS 审中-公开

    公开(公告)号：EP3726638A1

    公开(公告)日：2020-10-21

    申请号：EP19757407.2

    申请日：2019-02-18

    申请人： LG CHEM, LTD.

    发明人： SONG, Jun Hyuk ,  KIM, Je Young ,  LEE, Joo Sung ,  NOH, Suk In ,  LEE, Hee Won

    IPC分类号： H01M10/42 ,  H01M10/44 ,  H01M10/04 ,  H01M10/052 ,  H01M4/38 ,  H01M4/485

    摘要： The present invention relates to a secondary battery capacity recovery method and apparatus for recovering the capacity of a secondary battery with deteriorated lifespan characteristics. The secondary battery capacity recovery method of the present invention comprises: (1) preparing a secondary battery with deteriorated lifespan characteristics; (2) heating the secondary battery with deteriorated lifespan characteristics while pressing the secondary battery with deteriorated lifespan characteristics to compress a positive electrode, negative electrode, or separator included in the secondary battery; and (3) charging/discharging the secondary battery with deteriorated lifespan characteristics, the secondary battery having been pressed and heated, and the secondary battery with deteriorated lifespan characteristics may be charged and discharged while being pressed and heated, thereby exhibiting an effect of recovering the capacity of the secondary battery with deteriorated lifespan characteristics.