公开(公告)号：US10971754B2

公开(公告)日：2021-04-06

申请号：US16469328

申请日：2018-08-28

Applicant: LG CHEM, LTD. ,  CHUNG ANG UNIVERSITY INDUSTRY ACADEMIC COOPERATION FOUNDATION

Inventor： Da Young Sung ,  Myung Gil Kim ,  Minchul Jang ,  Hyewon Hwang

IPC: H01M10/0525 ,  H01M4/58 ,  H01M4/587 ,  H01M4/62 ,  C01B21/097 ,  H01M4/02

Abstract: A method for preparing a negative electrode active material, a negative electrode active material prepared using the same, and a lithium secondary battery, and in particular, to a method for preparing a negative electrode active material including the steps of (a) preparing a coating composition including a precursor of metal-phosphorus-oxynitride; (b) forming a precursor layer on a negative electrode active material with the coating composition of (a) using a solution process; and (c) forming a metal-phosphorus-oxynitride protective layer on the negative electrode active material by heat treating the negative electrode active material having the precursor layer formed thereon. The method for preparing a negative electrode active material uses a solution process, which is advantageous in terms of simplifying the whole process and reducing costs, and high capacity, high stabilization and long lifetime are obtained as well by the formed protective layer having excellent properties.

公开(公告)号：US10862130B2

公开(公告)日：2020-12-08

申请号：US16202946

申请日：2018-11-28

Applicant: LG CHEM, LTD.

Inventor： Byoungkuk Son ,  Minchul Jang ,  Min Seo Kim ,  Da Young Sung ,  Seong Ho Lee

IPC: H01M4/62 ,  H01M4/13 ,  H01M4/38 ,  H01M10/052 ,  H01M4/04 ,  H01M4/40 ,  H01M10/0568 ,  H01M4/136

Abstract: The present application relates to a cathode for a lithium-sulfur battery and a method of preparing the same. More specifically, the cathode for a lithium-sulfur battery according to an exemplary embodiment of the present application includes: a cathode active part including a sulfur-carbon composite; and a cathode coating layer including an amphiphilic polymer provided on at least one portion of a surface of the cathode active part and including a hydrophilic portion and a hydrophobic portion.

公开(公告)号：US09985291B2

公开(公告)日：2018-05-29

申请号：US14655944

申请日：2014-01-07

Applicant: LG CHEM, LTD.

Inventor： Byoungkuk Son ,  Minchul Jang ,  Yu Mi Kim ,  Hong Kyu Park ,  Da Young Sung ,  Seong Ho Lee

IPC: H01M4/60 ,  H01M4/38 ,  H01M4/58 ,  H01M4/13 ,  H01M4/139 ,  H01M4/36 ,  H01M4/62 ,  H01M4/583 ,  H01M10/052 ,  H01M10/0568 ,  H01M10/0569 ,  H01M4/02

CPC classification number: H01M4/604 ,  H01M4/13 ,  H01M4/139 ,  H01M4/364 ,  H01M4/366 ,  H01M4/38 ,  H01M4/382 ,  H01M4/58 ,  H01M4/583 ,  H01M4/622 ,  H01M4/625 ,  H01M10/052 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2004/028

Abstract: The present invention relates to a cathode active material for a lithium-sulfur battery and a method of preparing the same, and more particularly, to a cathode active material for a lithium-sulfur battery comprising: an amphiphilic polymer comprising hydrophilicity parts and hydrophobicity parts; and a sulfur-carbon composite, and a method of preparing the same. When a lithium-sulfur battery is prepared using the cathode active material, there is an effect which may enhance the electric conductivity in an electrode, cycle characteristics and capacity.

公开(公告)号：US10608252B2

公开(公告)日：2020-03-31

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 ,  H01M4/48 ,  H01M4/04 ,  H01M4/62 ,  H01M4/36 ,  H01M4/38 ,  H01M4/52 ,  H01M10/058

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：US10249872B2

公开(公告)日：2019-04-02

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: H01M4/00 ,  H01M4/36 ,  H01M4/62 ,  H01M4/587 ,  H01M4/38 ,  H01M4/02 ,  C01B32/168

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：US10243212B2

公开(公告)日：2019-03-26

申请号：US14409861

申请日：2014-06-03

Applicant: LG CHEM, LTD.

Inventor： Min Chul Jang ,  Hong Kyu Park ,  Yu Mi Kim ,  Byoung Kuk Son ,  Da Young Sung ,  Seong Ho Lee

IPC: H01M4/58 ,  H01M2/02 ,  H01M4/38 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/058 ,  H01M4/13 ,  H01M4/62

Abstract: Disclosed are an electrode assembly for sulfur-lithium ion batteries that uses a lithium-containing compound as a cathode active material and a sulfur-containing compound as an anode active material and a sulfur-lithium ion battery including the same.

公开(公告)号：US09889751B2

公开(公告)日：2018-02-13

申请号：US14419281

申请日：2014-07-30

Applicant: LG CHEM, LTD.

Inventor： Minchul Jang ,  Dong Keun Kwon ,  Min Seo Kim ,  Yu Mi Kim ,  Byoungkuk Son ,  Da Young Sung ,  Seong Ho Lee ,  Gi Su Park

IPC: H02J7/00 ,  B60L11/18 ,  H01M10/42 ,  H02J7/04 ,  H01M10/44 ,  H01M10/46 ,  B60L3/00 ,  B60L3/12

CPC classification number: B60L11/1809 ,  B60L3/0046 ,  B60L3/12 ,  B60L11/1803 ,  B60L11/1861 ,  B60L11/1864 ,  B60L11/1868 ,  B60L2240/545 ,  B60L2240/547 ,  B60L2240/549 ,  H01M10/4207 ,  H01M10/441 ,  H01M10/46 ,  H01M2010/4271 ,  H01M2220/20 ,  H02J7/0054 ,  H02J7/0068 ,  H02J7/04 ,  Y02T10/7011 ,  Y02T10/7061

Abstract: The present invention provides a battery management apparatus and method which connect a plurality of batteries having different energy densities to each other and control power supplied through the plurality of batteries to control the driving of the driving body.

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：US10651469B2

公开(公告)日：2020-05-12

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 ,  H01M4/48 ,  H01M4/04 ,  H01M4/62 ,  H01M4/36 ,  H01M4/38 ,  H01M4/52 ,  H01M10/058

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：US09911975B2

公开(公告)日：2018-03-06

申请号：US15029911

申请日：2014-10-08

Applicant: LG CHEM, LTD.

Inventor： Min Seo Kim ,  Seong Ho Lee ,  Minchul Jang ,  Da Young Sung

IPC: H01M4/36 ,  H01M4/04 ,  H01M4/136 ,  H01M4/587 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/1397 ,  H01M10/0525 ,  H01M2/16 ,  H01M4/134 ,  H01M4/38 ,  H01M4/62 ,  H01M10/0568 ,  H01M10/0569 ,  H01M4/02 ,  H01M10/058

CPC classification number: H01M4/366 ,  H01M2/1653 ,  H01M4/0404 ,  H01M4/0416 ,  H01M4/043 ,  H01M4/133 ,  H01M4/134 ,  H01M4/136 ,  H01M4/1393 ,  H01M4/1397 ,  H01M4/362 ,  H01M4/38 ,  H01M4/382 ,  H01M4/587 ,  H01M4/622 ,  H01M4/625 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/058 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2220/20 ,  H01M2300/0028 ,  Y02T10/7011

Abstract: The present application relates to a carbon nanotube-sulfur composite including a carbon nanotube aggregate, and a method for preparing the same.