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    Secondary battery activation method with enhanced ability to detect low voltage
    1.
    发明授权
    Secondary battery activation method with enhanced ability to detect low voltage 有权

    公开(公告)号：US12068465B2

    公开(公告)日：2024-08-20

    申请号：US17259749

    申请日：2020-01-03

    申请人： LG CHEM, LTD.

    发明人： Jung Mi Lee ,  Joon Sung Bae ,  Nak Gi Sung

    IPC分类号： H01M10/615 ,  H01M4/02 ,  H01M4/36 ,  H01M10/0525

    CPC分类号： H01M10/615 ,  H01M4/364 ,  H01M10/0525 ,  H01M2004/027 ,  H01M2004/028

    摘要： A secondary battery activation method includes a pre-aging step for aging, at room temperature, a secondary battery comprising a positive electrode comprising a positive electrode active material, a negative electrode comprising a negative electrode active material, a separator disposed between the positive electrode and the negative electrode, and an electrolyte; a charging step for primarily charging the pre-aged secondary battery to 60% or more of state of charge (SOC) of the secondary battery; a high-temperature aging step for aging the primarily charged secondary battery at a high temperature; and a room-temperature aging step for aging, at room temperature, the secondary battery which has been aged at a high temperature, wherein the high-temperature aging step is performed at a temperature of 60° C. or higher.

    Anode for lithium secondary battery and lithium secondary battery including the same
    4.
    发明授权
    Anode for lithium secondary battery and lithium secondary battery including the same 有权
    锂二次电池用阳极和包含锂二次电池的锂二次电池

    公开(公告)号：US09583756B2

    公开(公告)日：2017-02-28

    申请号：US14297756

    申请日：2014-06-06

    申请人： LG Chem, Ltd.

    发明人： Byoung Hoon Ahn ,  Joon Sung Bae ,  Chang Wan Koo

    IPC分类号： H01M4/133 ,  H01M4/04 ,  H01M4/1393 ,  H01M4/36 ,  H01M4/587 ,  H01M4/583 ,  H01M10/052 ,  H01M4/62 ,  H01M4/02

    CPC分类号： H01M4/0404 ,  H01M4/0435 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/366 ,  H01M4/583 ,  H01M4/587 ,  H01M4/622 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2220/20 ,  Y02E60/122 ,  Y02P70/54 ,  Y02T10/7011 ,  Y10T29/49117

    摘要： Provided is an anode for a lithium secondary battery composed of a multi-layered structure including an electrode current collector, a first anode active material layer including a first anode active material formed on the electrode current collector, and a second anode active material layer including a second anode active material having relatively lower press density and relatively larger average particle diameter than the first anode active material. Since an anode according to an embodiment of the present invention may include a multi-layered active material layer including two kinds of anode active materials having different press densities and average particle diameters on an electrode current collector, porosity of the surface of the electrode may be improved even after a press process to improve ion mobility into the electrode. Thus, charge characteristics and cycle life of a lithium secondary battery may be improved.

    摘要翻译： 本发明提供一种锂二次电池用阳极，其由包括电极集电体的多层结构，包含形成在电极集电体上的第一负极活性物质的第一负极活性物质层和第二负极活性物质层构成， 第二负极活性材料具有比第一阳极活性材料相对较低的压力密度和相对较大的平均粒径。 由于根据本发明的实施方案的阳极可以包括多层活性材料层，其包括在电极集电器上具有不同压力密度和平均粒径的两种负极活性材料，电极表面的孔隙率可以是 即使在压制过程之后也改善离子迁移率进入电极。 因此，可以提高锂二次电池的充电特性和循环寿命。

    LITHIUM SECONDARY BATTERY HAVING ANODE CONTAINING AQUEOUS BINDER
    5.
    发明申请
    LITHIUM SECONDARY BATTERY HAVING ANODE CONTAINING AQUEOUS BINDER 有权
    具有包含水性粘合剂的阳极的锂二次电池

    公开(公告)号：US20150030923A1

    公开(公告)日：2015-01-29

    申请号：US14374051

    申请日：2013-02-07

    申请人： LG Chem, Ltd.

    发明人： Chang-Wan Koo ,  Byoung Hoon Ahn ,  Joon Sung Bae ,  Jae Bin Chung

    IPC分类号： H01M4/62 ,  H01M10/052 ,  H01M4/583

    CPC分类号： H01M4/621 ,  C08L9/06 ,  C09J101/286 ,  H01M4/133 ,  H01M4/505 ,  H01M4/525 ,  H01M4/583 ,  H01M4/587 ,  H01M4/622 ,  H01M10/052 ,  H01M10/0525 ,  H01M2220/20 ,  Y02T10/7011

    摘要： Disclosed is a lithium secondary battery that includes an anode coated with an anode mixture including an anode active material, a cathode coated with a cathode mixture including a cathode active material, and a non-aqueous electrolyte, wherein the anode mixture includes, as aqueous binders, carboxymethyl cellulose (CMC) having a degree of substitution of a hydroxyl group (—OH) with a carboxymethyl group (—CH2CO2H) of 0.7 to 1.2, a molecular weight (Mn) of 500,000 to 900,000, and a pH of 6.5 to 8.0 and styrene-butadiene rubber (SBR) having a particle diameter of 90 nm to 150 nm and a tensile strength of 90 kgf to 160 kgf, and the anode has an electrode coating amount of 10 to 20 mg/cm2 and that enhances electrode processability and reduces a swelling phenomenon.

    摘要翻译： 公开了一种锂二次电池，其包括阳极涂覆有负极混合物的阳极，阳极混合物包括阳极活性材料，阴极涂覆有包含阴极活性材料的阴极混合物和非水电解质，其中阳极混合物包含作为水性粘合剂 具有羟基（-OH）与羧甲基（-CH 2 CO 2 H）取代度为0.7〜1.2，分子量（Mn）为500,000〜900,000，pH6.5〜8.0的羧甲基纤维素（CMC） 和苯乙烯 - 丁二烯橡胶（SBR），其粒径为90nm〜150nm，拉伸强度为90kgf〜160kgf，阳极的电极涂布量为10〜20mg / cm 2，电极加工性提高， 减轻肿胀现象。

    ANODE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME
    6.
    发明申请
    ANODE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME 有权
    锂二次电池阳极和锂二次电池

    公开(公告)号：US20140287316A1

    公开(公告)日：2014-09-25

    申请号：US14297756

    申请日：2014-06-06

    申请人： LG Chem, Ltd.

    发明人： Byoung Hoon Ahn ,  Joon Sung Bae ,  Chang Wan Koo

    IPC分类号： H01M4/36 ,  H01M4/04 ,  H01M4/583

    CPC分类号： H01M4/0404 ,  H01M4/0435 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/366 ,  H01M4/583 ,  H01M4/587 ,  H01M4/622 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2220/20 ,  Y02E60/122 ,  Y02P70/54 ,  Y02T10/7011 ,  Y10T29/49117

    摘要： Provided is an anode for a lithium secondary battery composed of a multi-layered structure including an electrode current collector, a first anode active material layer including a first anode active material formed on the electrode current collector, and a second anode active material layer including a second anode active material having relatively lower press density and relatively larger average particle diameter than the first anode active material.Since an anode according to an embodiment of the present invention may include a multi-layered active material layer including two kinds of anode active materials having different press densities and average particle diameters on an electrode current collector, porosity of the surface of the electrode may be improved even after a press process to improve ion mobility into the electrode. Thus, charge characteristics and cycle life of a lithium secondary battery may be improved.

    摘要翻译： 本发明提供一种锂二次电池用阳极，其由包括电极集电体的多层结构，包含形成在电极集电体上的第一负极活性物质的第一负极活性物质层和第二负极活性物质层构成， 第二负极活性材料具有比第一阳极活性材料相对较低的压力密度和相对较大的平均粒径。 由于根据本发明的实施方案的阳极可以包括多层活性材料层，其包括在电极集电器上具有不同压力密度和平均粒径的两种负极活性材料，电极表面的孔隙率可以是 即使在压制过程之后也改善离子迁移率进入电极。 因此，可以提高锂二次电池的充电特性和循环寿命。