公开(公告)号：US20190229342A1

公开(公告)日：2019-07-25

申请号：US16368149

申请日：2019-03-28

Applicant: LG CHEM, LTD. ,  KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Byoungkuk SON ,  Jang Wook CHOI ,  Byung Gon KIM ,  Minchul JANG ,  Eunkyung PARK ,  Junghun CHOI ,  Donghyeon KANG

IPC: H01M4/76 ,  H01M10/052 ,  H01M4/62 ,  H01M4/583 ,  H01M4/66 ,  H01M4/38 ,  H01M4/134

Abstract: 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.

公开(公告)号：US20200067069A1

公开(公告)日：2020-02-27

申请号：US16489273

申请日：2018-06-22

Applicant: LG CHEM, LTD. ,  KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Eunkyung PARK ,  Jang Wook CHOI ,  Sung Hyeon PARK ,  Minchul JANG ,  Suk Il YOUN ,  Byoungkuk SON ,  Se Ho PARK

IPC: H01M4/04 ,  D01D5/00 ,  D01F9/14 ,  H01M4/36 ,  H01M4/485 ,  H01M4/587 ,  H01M10/0568 ,  H01M10/0569

Abstract: A method of preparing a structure, more particularly, a method of preparing a structure capable of ensuring a space for carrying an electrode active material by a simple method which includes an electrospinning process using a double nozzle electrospinning device and a heat treatment process.

公开(公告)号：US20190173095A1

公开(公告)日：2019-06-06

申请号：US16268925

申请日：2019-02-06

Applicant: LG CHEM, LTD. ,  KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Eunkyung PARK ,  Jang Wook CHOI ,  Byung Gon KIM ,  Minchul JANG ,  Byoungkuk SON ,  Junghun CHOI ,  Donghyeon KANG

IPC: H01M4/76 ,  H01M4/38 ,  H01M4/134

Abstract: A structure, and more specifically a tube-shaped structure having an inner surface and two ends, wherein one or both ends are open and the inner surface is exposed through said one or both open ends, and a metal provide on the inner surface. Also, an electrode active material, such as lithium metal, on the metal included on the inner surface of the tube.

公开(公告)号：US20210066752A1

公开(公告)日：2021-03-04

申请号：US16962201

申请日：2019-10-31

Applicant: LG CHEM, LTD.

Inventor： Eunkyung PARK ,  Yeilin HAM ,  Minchul JANG ,  Byoungkuk SON ,  Bora JUNG

IPC: H01M10/0565 ,  H01M10/0525

Abstract: 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.

公开(公告)号：US20200381713A1

公开(公告)日：2020-12-03

申请号：US16303045

申请日：2018-05-30

Applicant: LG CHEM, LTD.

Inventor： Chanyeup CHUNG ,  Minchul JANG ,  Kyoung Hoon KIM ,  Youngcheol CHOI ,  Byoungkuk SON ,  Junghun CHOI

IPC: H01M4/36 ,  H01M4/66 ,  H01M4/134 ,  H01M10/0525

Abstract: A negative electrode including an electrode protective material and a lithium secondary battery including the negative electrode, wherein the negative electrode containing the protective material can inhibit the growth of lithium dendrite on the surface of the electrode, effectively transfer lithium ions to the lithium metal electrode and has an excellent ion conductivity, and thus the protective layer itself including the protective material does not act as a resistive layer, overvoltage is not applied during charging and discharging, thereby preventing degradation of the performance of the battery and ensuring stability when driving the battery.

公开(公告)号：US20200099040A1

公开(公告)日：2020-03-26

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 ,  H01M4/36 ,  H01M4/38 ,  B22F1/02 ,  B22F9/24 ,  H01M4/1395 ,  H01M4/62 ,  H01M10/0525

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：US20190140318A1

公开(公告)日：2019-05-09

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

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：US20180323430A1

公开(公告)日：2018-11-08

申请号：US15740614

申请日：2017-06-12

Applicant: LG CHEM, LTD.

Inventor： Byoungkuk SON ,  Minchul JANG ,  Junghun CHOI ,  Da Young SUNG ,  Se Ho PARK

IPC: H01M4/525 ,  H01M10/0525 ,  H01M4/38 ,  H01M4/04 ,  H01M10/058

CPC classification number: H01M4/525 ,  H01M4/0445 ,  H01M4/382 ,  H01M4/52 ,  H01M10/0525 ,  H01M10/058 ,  H01M10/42

Abstract: The present invention relates to a lithium secondary battery, more particularly, to a lithium secondary battery in which a low-cost positive electrode active material is applied and a negative electrode active material of lithium metal is formed on the positive electrode side, and to a preparation method thereof. The lithium secondary battery according to the present invention can be produced at a low unit cost of production because it employs a complex combined from relatively inexpensive Co, CoO, Co3O4 and Li2O, instead of LiCoO2 which is a common positive electrode active material, and the lithium secondary battery is also easy to mass produce because of its simple manufacturing process since LiCoO2 is synthesized through an electrochemical reaction due to operating of the battery without a separate heat treatment process.

公开(公告)号：US20170092936A1

公开(公告)日：2017-03-30

申请号：US15311945

申请日：2015-06-10

Applicant: LG CHEM, LTD.

Inventor： Minchul JANG ,  Jeong Kyu KIM ,  Yoo Seok KIM ,  Suhwan KIM ,  Jinhyoung YOO ,  Da Young SUNG

IPC: H01M4/36 ,  H01M4/62 ,  H01M4/587

CPC classification number: H01M4/364 ,  C01B32/168 ,  H01M4/386 ,  H01M4/587 ,  H01M4/62 ,  H01M2004/027 ,  H01M2220/30

Abstract: The present specification relates to a silicon-carbon composite, a negative electrode including the same, a secondary battery using the silicon-carbon composite, and a method for preparing the silicon-carbon composite.

公开(公告)号：US20210083250A1

公开(公告)日：2021-03-18

申请号：US16644624

申请日：2018-12-17

Applicant: LG CHEM, LTD.

Inventor： Suk Il YOUN ,  Minchul JANG ,  Byoungkuk SON ,  Yeilin HAM ,  Da Young SUNG

IPC: H01M2/16 ,  H01M10/0525

Abstract: A porous separator including a porous layer including plate-type inorganic particles, and a first binder polymer located on a part of or all surfaces of the plate-type inorganic particles, wherein the first binder polymer connects and fixes the plate-type inorganic particles, and an electrochemical device including the same.