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    Negative electrode for lithium secondary battery and lithium secondary battery including the same
    12.
    发明授权
    Negative electrode for lithium secondary battery and lithium secondary battery including the same 有权

    公开(公告)号：US11502283B2

    公开(公告)日：2022-11-15

    申请号：US16760332

    申请日：2018-11-23

    Applicant: LG Chem, Ltd.

    Inventor： Su-Min Lee ,  Eun-Kyung Kim ,  Je-Young Kim ,  Yong-Ju Lee ,  Rae-Hwan Jo

    IPC: H01M4/04 ,  H01M4/13 ,  H01M4/139 ,  H01M4/36 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02

    Abstract: Disclosed is a negative electrode for a lithium secondary battery which includes: a negative electrode current collector; a first negative electrode mixture layer positioned on at least one surface of the negative electrode current collector and including a first negative electrode active material, a polymer binder and a conductive material; and a second negative electrode mixture layer positioned on the top surface of the first negative electrode mixture layer and including a second negative electrode active material, a polymer binder and a conductive material, wherein the second negative electrode active material has a smaller water contact angle as compared to the first negative electrode active material, and at least one of the first negative electrode active material and the second negative electrode active material is surface-modified.

    ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND PREPARATION THEREOF
    14.
    发明申请
    ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND PREPARATION THEREOF 审中-公开
    用于锂二次电池的电极活性材料及其制备

    公开(公告)号：US20140363741A1

    公开(公告)日：2014-12-11

    申请号：US14467365

    申请日：2014-08-25

    Applicant: LG CHEM, LTD.

    Inventor： Yong-Ju Lee ,  Je-Young Kim ,  Seung-Youn Choi ,  Dong-Sub Jung

    IPC: H01M4/36 ,  H01M4/04 ,  H01M4/131 ,  H01M4/62 ,  H01M4/485

    CPC classification number: H01M4/366 ,  H01M4/0402 ,  H01M4/0471 ,  H01M4/0495 ,  H01M4/13 ,  H01M4/131 ,  H01M4/364 ,  H01M4/483 ,  H01M4/485 ,  H01M4/625 ,  H01M10/052

    Abstract: The present invention relates to an electrode active material for a lithium secondary battery and the preparation thereof. The electrode active material for a lithium secondary battery according to the present invention comprises a core including (a) first particulates consisting of an oxide of a metal (metalloid) capable of alloying with lithium, and (b) second particulates consisting of an oxide containing the same metal (metalloid) together with lithium; and a conductive carbon layer coated on the surface of the core. The electrode active material of the present invention has high capacity and improved electric conductivity, thereby providing good charge and discharge rate capability.

    Abstract translation: 本发明涉及锂二次电池用电极活性物质及其制备方法。 根据本发明的用于锂二次电池的电极活性材料包括：芯，其包括：（a）由能够与锂合金化的金属（准金属）的氧化物构成的第一颗粒，和（b）由含有 相同的金属（准金属）与锂一起; 和涂覆在芯的表面上的导电碳层。 本发明的电极活性物质具有高容量，电导率提高，从而提供良好的充放电率能力。

    ANODE ACTIVE MATERIAL, LITHIUM SECONDARY BATTERY COMPRISING THE SAME, AND METHOD OF MANUFACTURING ANODE ACTIVE MATERIAL
    16.
    发明申请
    ANODE ACTIVE MATERIAL, LITHIUM SECONDARY BATTERY COMPRISING THE SAME, AND METHOD OF MANUFACTURING ANODE ACTIVE MATERIAL 有权
    阳极活性材料，包含该阳极材料的锂二次电池以及制造阳极活性材料的方法

    公开(公告)号：US20140322606A1

    公开(公告)日：2014-10-30

    申请号：US14331385

    申请日：2014-07-15

    Applicant: LG Chem, Ltd.

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

    IPC: H01M4/36

    CPC classification number: H01M4/366 ,  H01M4/0471 ,  H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/38 ,  H01M4/386 ,  H01M4/387 ,  H01M4/405 ,  H01M4/48 ,  H01M4/485 ,  H01M4/587 ,  H01M4/625 ,  H01M10/052 ,  H01M10/0525 ,  Y02E60/122 ,  Y02P70/54

    Abstract: The present disclosure relates to an anode active material comprising a composite of a core-shell structure, a lithium secondary battery comprising the same, and a method of manufacturing the anode active material. According to an aspect of the present disclosure, there is provided an anode active material of a core-shell structure comprising a core including alloyed (quasi)metal oxide-Li (MOx—Liy) and a shell including a carbon material coated on a surface of the core. According to another aspect of the present disclosure, there is provided a method of manufacturing the anode active material of the core-shell structure. According to an aspect of the present disclosure, an anode active material with high capacity, excellent cycle characteristics and volume expansion control capacity, and high initial efficiency is provided.

    Abstract translation: 本公开涉及一种负极活性物质，其包含核 - 壳结构的复合物，包含该复合物的锂二次电池和制造阳极活性物质的方法。 根据本公开的一个方面，提供了一种核 - 壳结构的负极活性材料，其包括包含合金（准）金属氧化物-Li（MOx-Liy）的核和包含涂覆在表面上的碳材料的壳 的核心。 根据本公开的另一方面，提供了制造核 - 壳结构的负极活性材料的方法。 根据本公开的一个方面，提供了具有高容量，优异的循环特性和体积膨胀控制能力以及高初始效率的负极活性材料。

    Negative Electrode for Lithium Secondary Battery and Lithium Secondary Battery Including the Same
    20.
    发明申请
    Negative Electrode for Lithium Secondary Battery and Lithium Secondary Battery Including the Same 审中-公开

    公开(公告)号：US20200343527A1

    公开(公告)日：2020-10-29

    申请号：US16760332

    申请日：2018-11-23

    Applicant: LG Chem, Ltd.

    Inventor： Su-Min Lee ,  Eun-Kyung Kim ,  Je-Young Kim ,  Yong-Ju Lee ,  Rae-Hwan Jo

    IPC: H01M4/04 ,  H01M4/36 ,  H01M4/62 ,  H01M4/13 ,  H01M4/139 ,  H01M10/0525

    Abstract: Disclosed is a negative electrode for a lithium secondary battery which includes: a negative electrode current collector; a first negative electrode mixture layer positioned on at least one surface of the negative electrode current collector and including a first negative electrode active material, a polymer binder and a conductive material; and a second negative electrode mixture layer positioned on the top surface of the first negative electrode mixture layer and including a second negative electrode active material, a polymer binder and a conductive material, wherein the second negative electrode active material has a smaller water contact angle as compared to the first negative electrode active material, and at least one of the first negative electrode active material and the second negative electrode active material is surface-modified.

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