公开(公告)号：US11322777B2

公开(公告)日：2022-05-03

申请号：US16093342

申请日：2017-09-28

Applicant: LG CHEM, LTD.

Inventor： Changhun Park ,  Minchul Jang ,  Byoungkuk Son ,  Eunkyung Park ,  Junghun Choi

IPC: H01M10/0565 ,  H01M10/052 ,  H01M10/0569 ,  H01M4/40 ,  H01M4/38 ,  H01M10/0566 ,  H01M50/431 ,  H01M4/02 ,  H01M4/36

Abstract: 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.

公开(公告)号：US11784315B2

公开(公告)日：2023-10-10

申请号：US16625602

申请日：2018-08-28

Applicant: LG CHEM, LTD.

Inventor： Bora Jung ,  Eunkyung Park ,  Minchul Jang ,  Byoungkuk Son ,  Changhun Park ,  Doyeon Kim

IPC: H01M4/80 ,  H01M4/36 ,  H01M4/48 ,  H01M4/50 ,  H01M4/52 ,  H01M4/38 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M4/62 ,  H01M10/052 ,  H01M10/0562 ,  H01M4/02

CPC classification number: H01M4/80 ,  H01M4/364 ,  H01M4/366 ,  H01M4/382 ,  H01M4/483 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5825 ,  H01M4/628 ,  H01M10/052 ,  H01M10/0562 ,  H01M2004/021 ,  H01M2300/0068

Abstract: 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.

公开(公告)号：US11431019B2

公开(公告)日：2022-08-30

申请号：US16623500

申请日：2018-06-26

Applicant: LG CHEM, LTD.

Inventor： Eunkyung Park ,  Minchul Jang ,  Changhun Park ,  Doyeon Kim ,  Bora Jung

IPC: H01M4/36 ,  H01M4/62 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0565 ,  H01M4/02

Abstract: A lithium secondary battery which is made of an anode-free battery and comprises lithium metal formed on a negative electrode current collector by charging. The lithium secondary battery comprises the lithium metal formed 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：US12148875B2

公开(公告)日：2024-11-19

申请号：US17040500

申请日：2019-10-31

Applicant: LG CHEM, LTD.

Inventor： Eunkyung Park ,  Minchul Jang ,  Suk Il Youn ,  Byoungkuk Son ,  Changhun Park ,  Doyeon Kim ,  Bora Jung ,  Yeilin Ham

IPC: H01M10/052 ,  C01G51/00 ,  C01G53/00 ,  H01M4/04 ,  H01M4/131 ,  H01M4/136 ,  H01M4/1395 ,  H01M4/38 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0565 ,  H01M10/0566

Abstract: A lithium secondary battery including a positive electrode, a negative electrode comprising a negative electrode current collector, and an electrolyte disposed between the positive electrode and the negative electrode; and a lithium metal layer on the negative electrode current collector in the negative electrode. The electrolyte includes a first electrolyte layer and a second electrolyte disposed on the first electrolyte layer, wherein the first electrolyte layer faces the negative electrode, and the second electrolyte layer faces the positive electrode. The first electrolyte layer has higher ion conductivity than the second electrolyte layer, and wherein the lithium metal layer is formed by migration of lithium ions from the positive electrode after charging.

公开(公告)号：US10858749B2

公开(公告)日：2020-12-08

申请号：US16337804

申请日：2018-04-04

Applicant: LG CHEM, LTD.

Inventor： Changhun Park ,  Minehul Jang ,  Da Young Sung ,  Se Ho Park ,  Doyeon Kim ,  Donghyeon Kang

IPC: C25D3/42 ,  H01M4/04 ,  H01M4/66 ,  H01M4/70 ,  H01M4/1395 ,  C25C1/02 ,  C25D3/56 ,  H01M10/0525

Abstract: An electroplating solution for lithium metal, and a method for preparing a lithium metal electrode using the same, and in particular, while preparing a lithium metal electrode using electroplating, a lithium metal electrode having enhanced surface properties may be prepared by electroplating using a plating solution including a lithium nitrogen oxide and a metal nitrogen oxide, and, by using such a lithium metal electrode in a battery, lifetime properties of the battery may be enhanced.

公开(公告)号：US10312502B2

公开(公告)日：2019-06-04

申请号：US15315818

申请日：2015-06-15

Applicant: LG CHEM, LTD.

Inventor： Byoungkuk Son ,  Minchul Jang ,  Kiyoung Kwon ,  Seong Ho Lee ,  Intae Park ,  Changhun Park ,  Junghun Choi

IPC: H01M4/133 ,  H01M4/38 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/0525 ,  H01M4/485 ,  H01M4/587 ,  H01M10/052 ,  H01M10/056

Abstract: A lithium electrode including a porous carbon body; and a lithium metal inserted into pores of the porous carbon body is provided. The lithium electrode may include a lithium ion conductive protective layer formed on at least one surface of the porous carbon body. The lithium electrode can be used as a negative electrode in a lithium secondary battery.

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：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：US11935999B2

公开(公告)日：2024-03-19

申请号：US16336756

申请日：2018-02-14

Applicant: LG CHEM, LTD.

Inventor： Byoungkuk Son ,  Minchul Jang ,  Eunkyung Park ,  Junghun Choi ,  Changhun Park

IPC: H01M10/0565 ,  H01M4/38 ,  H01M4/40 ,  H01M10/052 ,  H01M10/0567 ,  H01M10/0569

CPC classification number: H01M10/0565 ,  H01M4/382 ,  H01M4/405 ,  H01M10/052 ,  H01M10/0567 ,  H01M10/0569 ,  H01M2300/0028 ,  H01M2300/0085

Abstract: 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.

公开(公告)号：US11699813B2

公开(公告)日：2023-07-11

申请号：US16629239

申请日：2018-07-30

Applicant: LG CHEM, LTD. ,  DAEGU GYEONGBUK INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Changhun Park ,  Hochun Lee ,  Sungjin Kang ,  Minchul Jang ,  Doyeon Kim ,  Hyeonji Kim

IPC: H01M10/0567 ,  H01M10/054

CPC classification number: H01M10/0567 ,  H01M10/054 ,  H01M2300/0025 ,  Y02E60/10

Abstract: Disclosed is an electrolyte for a secondary battery, and a secondary battery comprising the same, and in particular, to an electrolyte for a secondary battery including an electrolyte salt, an organic solvent and an additive, wherein the additive includes at least one compound selected from the group consisting of a compound having an N—Si-based bond and a compound having an O—Si-based bond.