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31 条记录 (耗时 0.016 秒)

    Pre-lithiation using lithium metal and inorganic composite layer
    5.
    发明授权
    Pre-lithiation using lithium metal and inorganic composite layer 有权

    公开(公告)号：US11316156B2

    公开(公告)日：2022-04-26

    申请号：US16541737

    申请日：2019-08-15

    申请人： LG CHEM, LTD.

    发明人： Sang Wook Woo ,  Eun Kyung Kim ,  Yoon Ah Kang ,  Jun Hyuk Song ,  Oh Byong Chae

    IPC分类号： H01M4/485 ,  H01M4/04 ,  H01M4/02

    摘要： A method of pre-lithiating a negative electrode for a secondary battery, including: dispersing a lithium metal powder, an inorganic material powder and a binder in a solvent to prepare a mixed solution; and applying the mixed solution to the negative electrode to form a lithium metal-inorganic composite layer on the negative electrode, thereby forming the pre-lithiated negative electrode. Also, a method for pre-lithiating a negative electrode having a high capacity by a simple process. Further, a negative electrode for a secondary battery manufactured through the pre-lithiation method provided in the present invention has an improved initial irreversibility, and secondary batteries manufactured using such a negative electrode for a secondary battery have excellent charge/discharge efficiency.

    SILICON-BASED COMPOSITE AND PRODUCTION METHOD THEREOF
    9.
    发明申请
    SILICON-BASED COMPOSITE AND PRODUCTION METHOD THEREOF 有权
    硅基复合材料及其生产方法

    公开(公告)号：US20140205907A1

    公开(公告)日：2014-07-24

    申请号：US14221651

    申请日：2014-03-21

    申请人： LG Chem, Ltd.

    发明人： Yoon Ah Kang ,  Yong Ju Lee ,  Mi Rim Lee ,  Je Young Kim ,  Hye Ran Jung

    IPC分类号： H01M4/36 ,  H01M4/52 ,  H01M4/48 ,  H01M4/583

    CPC分类号： H01M4/366 ,  H01M4/48 ,  H01M4/485 ,  H01M4/52 ,  H01M4/583 ,  H01M4/587 ,  H01M4/625 ,  Y02P70/54

    摘要： The present invention relates to a silicon-based composite including a silicon oxide which is coated thereon with carbon and bonded therein to lithium. The present invention also relates to a method of producing a silicon-based composite, comprising coating a surface of silicon oxide with carbon, mixing the silicon oxide coated with carbon with lithium oxide, and heat-treating a mixture of the silicon oxide coated with carbon and the lithium oxide in an inert atmosphere.

    摘要翻译： 本发明涉及一种硅基复合材料，其包括在其上涂覆有碳并结合到锂中的氧化硅。 本发明还涉及一种制备硅基复合材料的方法，包括用碳涂覆氧化硅表面，将涂覆有碳的氧化硅与氧化锂混合，并对涂覆有碳的氧化硅的混合物进行热处理 和氧化锂在惰性气氛中。

    Pre-lithiation apparatus, method of producing negative electrode unit and negative electrode unit
    10.
    发明授权
    Pre-lithiation apparatus, method of producing negative electrode unit and negative electrode unit 有权

    公开(公告)号：US11329312B2

    公开(公告)日：2022-05-10

    申请号：US16500276

    申请日：2017-12-29

    申请人： LG CHEM, LTD.

    发明人： Oh Byong Chae ,  Yoon Ah Kang ,  Jun Hyuk Song ,  Eun Kyung Kim ,  Sang Wook Woo

    IPC分类号： H01M10/0525 ,  H01M4/04 ,  H01M4/131 ,  H01M4/134 ,  H01M4/36 ,  H01M4/66 ,  H01M4/02

    摘要： A pre-lithiation apparatus that pre-lithiates a negative electrode structure having a first surface on which a negative electrode is disposed to produce a negative electrode unit of a battery, the apparatus includes a first roll rotatable to wind or unwind the negative electrode structure before the pre-lithiation is performed, a second roll installed to be spaced apart from the first roll and rotatable to wind and collect the negative electrode structure, on which the pre-lithiation is performed, and a lithium roll crossing a direction in which the negative electrode structure is transferred from the first roll to the second roll to come into contact with at least one of a first surface and a second surface of the negative electrode structure while being transferred from the first roll to the second roll. The lithium roll includes a lithium foil and an elastic member.