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公开(公告)号：US20200075990A1
公开(公告)日：2020-03-05
申请号：US16467186
申请日：2018-06-21
申请人： LG CHEM, LTD.
发明人： Eunkyung PARK , Minchul JANG , Byoungkuk SON , Junghun CHOI , Donghyeon KANG , Bora JUNG
摘要： A lithium secondary battery prepared to a negative electrode free battery, and forming lithium metal on a negative electrode current collector through charge. The lithium secondary battery forms lithium metal while being blocked from the atmosphere, and since production of a surface oxide layer (native layer) formed on an existing negative electrode is fundamentally blocked, resulting battery efficiency and lifetime property decline may be prevented.
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2.发明申请公开(公告)号：US20200075939A1
公开(公告)日：2020-03-05
申请号：US16467195
申请日：2018-04-09
申请人： LG CHEM, LTD.
发明人： Byoungkuk SON , Minchul JANG , Junghun CHOI , Suk Il YOUN , Eunkyung PARK , Donghyeon KANG , Bora JUNG
IPC分类号： H01M4/36 , H01M4/38 , H01M4/48 , H01M10/052 , H01M4/62 , H01M4/1395 , H01M4/134 , H01M4/04
摘要： A negative electrode for a lithium secondary battery, a method for preparing the same, and a lithium secondary battery including the same. The negative electrode for a lithium secondary battery is prepared while being blocked from atmosphere through a release coating film, which is effective in reducing a thickness of a surface oxide layer by delaying the surface oxide layer formation of lithium metal caused by oxygen and moisture in the atmosphere.
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3.发明申请公开(公告)号：US20210066752A1
公开(公告)日：2021-03-04
申请号：US16962201
申请日：2019-10-31
申请人： LG CHEM, LTD.
发明人： Eunkyung PARK , Yeilin HAM , Minchul JANG , Byoungkuk SON , Bora JUNG
IPC分类号： H01M10/0565 , H01M10/0525
摘要： A lithium secondary battery including a negative electrode, a positive electrode, a first electrolyte layer facing the negative electrode; and a second electrolyte layer present on the first electrolyte layer, wherein the first electrolyte layer has a higher ion conductivity than the second electrolyte layer, and a lithium secondary battery comprising the electrolyte described above.
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公开(公告)号：US20200099040A1
公开(公告)日：2020-03-26
申请号：US16469040
申请日：2018-08-28
申请人： LG CHEM, LTD.
发明人： Jongwook JUNG , Se Ho PARK , Minchul JANG , Gyo Hyun HWANG , Eunkyung PARK , Changhun PARK
IPC分类号： H01M4/04 , H01M4/36 , H01M4/38 , B22F1/02 , B22F9/24 , H01M4/1395 , H01M4/62 , H01M10/0525
摘要： A method for preparing a hollow structure, and more particularly, to a method for preparing a hollow structure having various stable structures by using polystyrene particles, into which a functional group is introduced, as a template for preparing the hollow structure.
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公开(公告)号：US20190140318A1
公开(公告)日：2019-05-09
申请号：US16093342
申请日：2017-09-28
申请人： LG CHEM, LTD.
发明人： Changhun PARK , Minchul JANG , Byoungkuk SON , Eunkyung PARK , Junghun CHOI
IPC分类号： H01M10/0565 , H01M10/052 , H01M10/0569 , H01M4/40 , H01M4/38
摘要： The present invention relates to a lithium secondary battery, and in particular, to a lithium secondary battery including a positive electrode, a negative electrode, and a separator and an electrolyte interposed between the positive electrode and the negative electrode, wherein a gel polymer electrolyte is included between the negative electrode and the separator, and a liquid electrolyte is included between the positive electrode and the separator.The lithium secondary battery according to the present invention uses a different electrolyte in each of a positive electrode and a negative electrode improving stability and performance of the electrodes, and as a result, performance and a life time of the lithium secondary battery may be enhanced.
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公开(公告)号：US20210288349A1
公开(公告)日：2021-09-16
申请号：US16336756
申请日：2018-02-14
申请人： LG CHEM, LTD.
发明人： Byoungkuk SON , Minchul JANG , Eunkyung PARK , Junghun CHOI , Changhun PARK
IPC分类号： H01M10/0565 , H01M10/052 , H01M10/0567 , H01M10/0569 , H01M4/38 , H01M4/40
摘要： A lithium secondary battery, in which, by using different electrolytes in a positive electrode and a negative electrode, and using a gel polymer electrolyte, in which a small amount of an electrolyte liquid is impregnated into a polymer matrix, between the negative electrode and the separator, the stability and performance of the electrode may be improved, and therefore, the performance and lifetime of the lithium secondary battery may be enhanced.
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公开(公告)号：US20190229380A1
公开(公告)日：2019-07-25
申请号：US16329076
申请日：2017-11-08
申请人： LG CHEM, LTD.
发明人： Byoungkuk SON , Minchul JANG , Eunkyung PARK , Junghun CHOI
IPC分类号： H01M10/42 , H01M4/133 , H01M4/134 , H01M4/62 , H01M4/131 , H01M4/36 , H01M10/0525 , H01M10/0569
摘要： An electrode and a lithium secondary battery comprising the same, in particularly an electrode comprising an electrode layer, a pre-lithiation prevention layer formed on the electrode layer, and a lithium layer formed on the pre-lithiation prevention layer, which is capable of greatly improving the problem of the reduction of irreversible capacity of a negative electrode while preventing fire caused by a lithiation reaction due to contact between lithium and silicon before assembling a cell, and a lithium secondary battery including the same.
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公开(公告)号：US20190229342A1
公开(公告)日：2019-07-25
申请号：US16368149
申请日：2019-03-28
发明人： Byoungkuk SON , Jang Wook CHOI , Byung Gon KIM , Minchul JANG , Eunkyung PARK , Junghun CHOI , Donghyeon KANG
摘要： An electrode and a lithium secondary battery including the same. By preparing an electrode including an electrode active layer formed using a structure capable of supporting an electrode active material, safety and charge and discharge properties of a battery are improved due to morphological characteristics of the electrode active material being supported inside the structure.
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公开(公告)号：US20210336274A1
公开(公告)日：2021-10-28
申请号：US16625602
申请日：2018-08-28
申请人： LG CHEM, LTD.
发明人： Bora JUNG , Eunkyung PARK , Minchul JANG , Byoungkuk SON , Changhun PARK , Doyeon KIM
IPC分类号： H01M4/80 , H01M10/052 , H01M4/36 , H01M4/525 , H01M4/505 , H01M4/48 , H01M4/58 , H01M10/0562 , H01M4/62 , H01M4/38
摘要： A lithium secondary battery including a negative electrode in which a negative electrode mixture included in the negative electrode is formed by charge and discharge of the battery. This negative electrode is formed by charge-induced formation of lithium metal on a negative electrode current collector having a three-dimensional structure form. The lithium secondary battery forms lithium metal while being blocked from the atmosphere. Therefore, formation of a surface oxide layer (native oxide layer) on a negative electrode is blocked and a lithium dendrite growth suppressing effect is achieved by forming lithium metal on a negative electrode current collector having a three-dimensional structure form. The lithium secondary battery has a superior battery efficiency and reduces declines in lifetime properties.
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公开(公告)号：US20210273262A1
公开(公告)日：2021-09-02
申请号：US17265400
申请日：2019-10-30
申请人： LG CHEM, LTD.
发明人： Insung UHM , Yohan KWON , Eunkyung PARK , Jae Hyun LEE , Minchul JANG , Byoungkuk SON , Seongmin HA
IPC分类号： H01M10/0567 , H01M10/052 , H01M10/0565 , H01M10/0568 , H01M10/44 , H01M4/04 , H01M4/139
摘要： A lithium secondary battery including a positive electrode, a negative electrode comprising a negative electrode current collector, and an electrolyte interposed between the positive electrode and negative electrode. The lithium metal is formed on the negative electrode current collector by lithium ions migrating toward the negative electrode current collector after charge. The electrolyte comprises a sacrificial salt having an oxidation potential of 5 V or less with respect to lithium. The lithium secondary battery forms lithium metal while being blocked from the atmosphere, and thereby improves an existing problem caused by high reactivity of lithium metal. By including a sacrificial salt in an electrolyte, lithium consumption caused by an irreversible reaction of a negative electrode is reduced, which may prevent decline in the battery capacity and lifetime properties.
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