公开(公告)号：US12206070B2

公开(公告)日：2025-01-21

申请号：US17265400

申请日：2019-10-30

Applicant: LG CHEM, LTD.

Inventor： Insung Uhm ,  Yohan Kwon ,  Eunkyung Park ,  Jae Hyun Lee ,  Minchul Jang ,  Byoungkuk Son ,  Seongmin Ha

IPC: H01M10/0567 ,  H01M4/04 ,  H01M4/139 ,  H01M10/052 ,  H01M10/0565 ,  H01M10/0568 ,  H01M10/44

Abstract: 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.

公开(公告)号：US11978852B2

公开(公告)日：2024-05-07

申请号：US16975333

申请日：2019-10-31

Applicant: LG CHEM, LTD.

Inventor： Eunkyung Park ,  Minchul Jang ,  Bora Jung ,  Suk Il Youn ,  Byoungkuk Son

IPC: H01M10/0565 ,  H01M4/62 ,  H01M10/0525

CPC classification number: H01M10/0565 ,  H01M4/626 ,  H01M10/0525 ,  H01M2220/20 ,  H01M2300/0022 ,  H01M2300/0082

Abstract: A lithium electrode and a lithium secondary battery including the same, which includes a first protective layer and a second protective layer sequentially formed on at least one surface of lithium metal layer. The second protective layer contains a cross-linked ion conductive electrolyte in the interior and on the surface of the electrically conductive matrix, and thus the first protective layer has higher ion conductivity than the second protective layer, thereby preventing electrons from being concentrated into lithium dendrites formed from the lithium metal to inhibit the growth of lithium dendrites, and at the same time, physically inhibiting the growth of lithium dendrites by the second protective layer.

公开(公告)号：US11870078B2

公开(公告)日：2024-01-09

申请号：US16971247

申请日：2019-10-30

Applicant: LG CHEM, LTD.

Inventor： Eunkyung Park ,  Bora Jung ,  Minchul Jang ,  Suk Il Youn ,  Byoungkuk Son

IPC: H01M4/62 ,  H01M4/134 ,  H01M4/38 ,  H01M10/052 ,  H01M10/0565 ,  H01M10/0567 ,  H01M10/0568

CPC classification number: H01M4/628 ,  H01M4/134 ,  H01M4/382 ,  H01M4/626 ,  H01M10/052 ,  H01M10/0565 ,  H01M10/0567 ,  H01M10/0568 ,  H01M2300/0037 ,  H01M2300/0082 ,  H01M2300/0091

Abstract: A lithium electrode includes a protective layer containing an ion conductive electrolyte in the interior and on the surface of the electrically conductive matrix. The protective layer may make the electrical conductivity of the surface of the lithium electrode uniform, imparts strength during the growth of lithium dendrites, physically prevents the growth of lithium dendrites, and suppresses the generation of dead lithium.

公开(公告)号：US11557750B2

公开(公告)日：2023-01-17

申请号：US16636442

申请日：2018-08-17

Applicant: LG CHEM, LTD.

Inventor： Da Young Sung ,  Se Ho Park ,  Minchul Jang ,  Suk Il Youn ,  Byoungkuk Son ,  Eunkyung Park

IPC: H01M4/04 ,  H01M4/13915 ,  H01M4/1393 ,  H01M4/62 ,  H01M10/0562 ,  H01M4/02

Abstract: A method for manufacturing an electrode for an all solid battery including the steps of coating a current collector with a slurry including an active material, a conductive material, and a polyimide-based binder; and melting a solid electrolyte having a melting temperature of 50° C. to 500° C. and applying it onto the coating layer and an electrode manufactured therefrom.

公开(公告)号：US11349112B2

公开(公告)日：2022-05-31

申请号：US16469040

申请日：2018-08-28

Applicant: LG CHEM, LTD.

Inventor： Jongwook Jung ,  Se Ho Park ,  Minchul Jang ,  Gyo Hyun Hwang ,  Eunkyung Park ,  Changhun Park

IPC: H01M4/04 ,  B22F9/24 ,  H01M4/1395 ,  H01M4/36 ,  H01M4/38 ,  H01M4/62 ,  H01M10/0525 ,  B22F1/16 ,  H01M4/02

Abstract: 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.

公开(公告)号：US11322731B2

公开(公告)日：2022-05-03

申请号：US16474303

申请日：2018-06-21

Applicant: LG CHEM, LTD.

Inventor： Eunkyung Park ,  Minchul Jang ,  Suk Il Youn ,  Byoungkuk Son ,  Junghun Choi ,  Bora Jung

IPC: H01M4/131 ,  H01M4/04 ,  H01M4/36 ,  H01M4/40 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M4/66 ,  H01M10/0525 ,  H01M4/02

Abstract: A lithium secondary battery which is made of an anode-free battery and includes lithium metal formed on a negative electrode current collector by charging. The lithium secondary battery includes the lithium metal formed on the negative electrode current collector in a state of being shielded from the atmosphere, so that the generation of a surface oxide layer (native layer) formed on the negative electrode according to the prior art does not occur fundamentally, thereby preventing the deterioration of the efficiency and life characteristics of the battery.

公开(公告)号：US10957911B2

公开(公告)日：2021-03-23

申请号：US16089978

申请日：2017-09-07

Applicant: LG CHEM, LTD.

Inventor： Byoungkuk Son ,  Minchul Jang ,  Junghun Choi ,  Da Young Sung ,  Se Ho Park

IPC: H01M4/62 ,  H01M4/36 ,  H01M4/38 ,  H01M10/052 ,  H01M10/42 ,  H01M4/02

Abstract: The present invention relates to a negative electrode including a multi-protective layer and a lithium secondary battery including the same. The multi-protective layer is capable of effectively transferring lithium ions to a lithium metal electrode while physically suppressing lithium dendrite growth on the electrode surface, and does not cause an overvoltage during charge and discharge since the protective layer itself does not function as a resistive layer due to excellent ion conductivity of the multi-protective layer, and therefore, is capable of preventing battery performance decline and securing stability during battery operation.

公开(公告)号：US10680282B2

公开(公告)日：2020-06-09

申请号：US16093332

申请日：2017-09-21

Applicant: LG CHEM, LTD.

Inventor： Se Ho Park ,  Chanyeup Chung ,  Da Young Sung ,  Minchul Jang ,  Eunkyung Park ,  Changhun Park

IPC: H01M10/52 ,  H01M10/0562 ,  H01M10/052 ,  C01D15/00 ,  H01M12/08 ,  C01D15/04 ,  H01M10/0585

Abstract: The present invention relates to a Li-rich antiperovskite compound and the use thereof, and more particularly, to a Li-rich antiperovskite compound having a novel structure in which a dopant is substituted in a Li3OCl compound, wherein the dopant is substituted for an O site rather than an anionic Cl site, as known in the art, and an electrolyte using the same. The Li-rich antiperovskite compound has high lithium ion conductivity and excellent thermal stability, and thus can be applied as an electrolyte for lithium secondary batteries which are driven at a high temperature.

公开(公告)号：US20140242464A1

公开(公告)日：2014-08-28

申请号：US14228879

申请日：2014-03-28

Applicant: LG Chem, Ltd.

Inventor： Sung Kyun Chang ,  Seo-Jae Lee ,  Sanghoon Choy ,  Euiyong Bang ,  Minchul Jang ,  Ki-Young Lee

IPC: H01M4/36 ,  H01M4/485

CPC classification number: H01M4/364 ,  H01M4/131 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028 ,  Y02E60/122

Abstract: Provided is a lithium secondary battery having improved discharge characteristics in a range of high-rate discharge while minimizing a dead volume and at the same time, having increased cell capacity via increased electrode density and electrode loading amounts, by inclusion of two or more active materials having different redox levels so as to exert superior discharge characteristics in the range of high-rate discharge via sequential action of cathode active materials in a discharge process, and preferably having different particle diameters.

Abstract translation: 本发明提供一种锂二次电池，其在高速率放电的范围内具有改善的放电特性，同时使死体积最小化，同时，通过增加电极密度和电极负载量，通过包含两种或更多种活性材料 具有不同的氧化还原电位，从而在放电过程中通过阴极活性材料的顺序作用，并且优选具有不同的粒径，在高倍率放电的范围内发挥优异的放电特性。

公开(公告)号：US12191498B2

公开(公告)日：2025-01-07

申请号：US16982093

申请日：2019-10-31

Applicant: LG CHEM, LTD.

Inventor： Eunkyung Park ,  Minchul Jang ,  Bora Jung ,  Byoungkuk Son

IPC: H01M4/62 ,  H01M4/36 ,  H01M4/38 ,  H01M4/525 ,  H01M10/0525

Abstract: A lithium secondary battery comprising a positive electrode, a negative electrode, a lithium metal layer, and an electrolyte disposed between the positive electrode and the negative electrode. The negative electrode comprises a first protective layer formed on a negative electrode current collector, a second protective layer formed on the first protective layer opposite the negative electrode current collector, and a third protective layer formed inside and on one surface of the second protective layer opposite the first protective layer, and wherein the lithium metal layer is formed between the negative electrode current collector and the first protective layer in the negative electrode when lithium ions migrate from the positive electrode after charging.