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    LITHIUM SECONDARY BATTERY
    4.
    发明申请
    LITHIUM SECONDARY BATTERY 审中-公开
    锂二次电池

    公开(公告)号：US20160197340A1

    公开(公告)日：2016-07-07

    申请号：US14909331

    申请日：2015-06-19

    Applicant: LG CHEM, LTD.

    Inventor： Yong Ju LEE ,  Hyun Wook KIM ,  Eun Kyung KIM

    IPC: H01M4/36 ,  H01M4/48 ,  H01M4/525 ,  H01M10/052 ,  H01M4/505 ,  H01M4/587 ,  H01M4/38

    CPC classification number: H01M4/364 ,  H01M4/13 ,  H01M4/38 ,  H01M4/386 ,  H01M4/48 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/027 ,  H01M2010/4292 ,  H01M2220/30 ,  Y02T10/7011

    Abstract: The present invention relates to a lithium secondary battery including a negative electrode and a positive electrode, wherein the negative electrode includes a first negative electrode active material made of a carbonaceous material, and a second negative electrode active material having a lower initial charge/discharge efficiency than the first negative electrode active material, and the initial charge/discharge efficiency of the negative electrode is lower than the initial charge/discharge efficiency of the positive electrode. The present invention provides a lithium secondary battery capable of realizing high output by remarkably reducing the resistance at a low state-of-charge (SOC) level.

    Abstract translation: 本发明涉及包含负极和正极的锂二次电池，其中负极包括由碳质材料制成的第一负极活性材料和具有较低初始充电/放电效率的第二负极活性材料 并且负极的初始充放电效率低于正极的初始充放电效率。 本发明提供一种能够通过显着降低低电荷（SOC）电平的电阻来实现高输出的锂二次电池。

    NEGATIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME
    6.
    发明申请
    NEGATIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME 有权

    公开(公告)号：US20210202931A1

    公开(公告)日：2021-07-01

    申请号：US16756365

    申请日：2018-10-26

    Applicant: LG CHEM, LTD.

    Inventor： Su Min LEE ,  Yong Ju LEE ,  Eun Kyung KIM ,  Rae Hwan JO ,  Dong Hyuk KIM ,  Se Mi PARK

    IPC: H01M4/36 ,  H01M10/0525 ,  H01M4/38 ,  H01M4/587 ,  H01M4/48

    Abstract: A negative electrode active material for a lithium secondary battery, the negative electrode active material including, based on 100 parts by weight of the total negative electrode active material, 5 parts by weight to 20 parts by weight of a first carbon-based particle, 55 parts by weight to 90 parts by weight of a second carbon-based particle, and 1 part by weight to 40 parts by weight of a silicon-based particle, wherein the specific surface area of the first carbon-based particle is 1.5 m2/g to 4.5 m2/g, the specific surface area of the second carbon-based particle is 0.4 m2/g to 1.5 m2/g, and the specific surface area of the first carbon-based particle is greater than the specific surface area of the second carbon-based particle, and capable of solving the problem of lifespan deterioration which may be caused by the use of a silicon-based particle as a negative electrode active material.

    SILICON OXIDE AND METHOD OF PREPARING THE SAME
    10.
    发明申请
    SILICON OXIDE AND METHOD OF PREPARING THE SAME 有权
    氧化硅及其制备方法

    公开(公告)号：US20140248538A1

    公开(公告)日：2014-09-04

    申请号：US14224955

    申请日：2014-03-25

    Applicant: LG CHEM, LTD.

    Inventor： Byung Kyu LIM ,  Sang Yun JUNG ,  Cheol Hee PARK ,  Han Nah JEONG ,  Je Young KIM ,  Yong Ju LEE ,  Hyun Chul KIM

    IPC: H01M4/48 ,  H01M4/04

    CPC classification number: H01M4/48 ,  C01B33/113 ,  H01M4/0471 ,  H01M4/049 ,  H01M4/485 ,  H01M10/052 ,  Y02P70/54

    Abstract: The present invention relates to a method of preparing silicon oxide, in which the amounts of silicon and oxygen are appropriately controlled by decreasing the amount of the oxygen from silicon oxide containing a relatively large amount of oxygen, silicon oxide prepared by the method, and a secondary battery including the same. According to the method of preparing silicon oxide, silicon oxide (first silicon oxide) including a relatively large amount of oxygen is heat treated in a reducing atmosphere to decrease the amount of the oxygen in the silicon oxide (first silicon oxide) and to prepare silicon oxide (second silicon oxide) including silicon and oxygen in an appropriate amount (Si:SiO2=1:0.7-0.98), thereby improving capacity and initial efficiency and securing stability and cycle properties (lifetime characteristics) of the secondary battery.

    Abstract translation: 本发明涉及一种制备氧化硅的方法，其中硅和氧的量通过减少含氧量相对较大的氧化硅的氧量，通过该方法制备的氧化硅和 二次电池包括相同的。 根据制备氧化硅的方法，在还原气氛中热处理包含相当大量的氧的氧化硅（第一氧化硅），以减少氧化硅（第一氧化硅）中的氧的量并制备硅 包括硅和氧的氧化物（第二氧化硅）（Si：SiO 2 = 1:0.7-0.98），从而提高二次电池的容量和初始效率并确保稳定性和循环特性（寿命特性）。

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