公开(公告)号：US20200287219A1

公开(公告)日：2020-09-10

申请号：US16644683

申请日：2018-12-19

Applicant: LG CHEM, LTD.

Inventor： Hyunsoo LEE ,  Jong Mo JUNG ,  Doo Kyung YANG ,  Yu Mi KIM ,  Seong Ho LEE ,  Gi Su PARK ,  Byounghyo JUNG

IPC: H01M4/62 ,  H01M4/58 ,  H01M4/587 ,  H01M4/36 ,  H01M4/133 ,  H01M4/136 ,  H01M10/052

Abstract: A binder for a lithium-sulfur battery, and a positive electrode and a lithium-sulfur battery including the same, and in particular, to a binder for a lithium-sulfur battery including lithium polyacrylate and polyvinyl alcohol. By including two types of specific polymers, the binder for a lithium-sulfur battery is capable of enhancing electrochemical properties and stability of a positive electrode, and thereby enhancing capacity and lifetime properties of a lithium-sulfur battery.

公开(公告)号：US20200161658A1

公开(公告)日：2020-05-21

申请号：US16335643

申请日：2017-09-26

Applicant: LG CHEM, LTD.

Inventor： Jeong Ae YOON ,  Yu Mi KIM ,  Choong Hyeon LEE ,  Doo Kyung YANG ,  Sung Soo YOON

IPC: H01M4/62 ,  H01M4/587 ,  H01M4/38 ,  H01M4/36 ,  H01M10/052

Abstract: A binder for a lithium-sulfur secondary battery cathode, a composition containing the same, and an acrylic binder capable of forming a cross-linked network and a use thereof. The binder contains a polar functional group capable of strongly interacting with sulfur.

公开(公告)号：US20160190561A1

公开(公告)日：2016-06-30

申请号：US14909262

申请日：2014-08-14

Applicant: LG CHEM, LTD.

Inventor： Byoungkuk SON ,  Minchul JANG ,  Yu Mi KIM ,  Gi Su PARK

IPC: H01M4/36 ,  H01M4/38 ,  H01M4/04 ,  H01M4/56 ,  H01M4/58 ,  H01M10/052 ,  H01M4/48

CPC classification number: H01M4/366 ,  H01M4/0409 ,  H01M4/0416 ,  H01M4/136 ,  H01M4/1397 ,  H01M4/38 ,  H01M4/382 ,  H01M4/386 ,  H01M4/387 ,  H01M4/48 ,  H01M4/56 ,  H01M4/5815 ,  H01M4/5825 ,  H01M4/62 ,  H01M4/625 ,  H01M10/052 ,  H01M2004/021 ,  H01M2004/028 ,  Y02T10/7011

Abstract: The present application relates to a cathode for a lithium-sulfur battery and a method of preparing the same. A 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 provided on at least a portion of a surface of the cathode active part and including an inorganic oxide.

Abstract translation: 本发明涉及一种锂硫电池用阴极及其制备方法。 根据本申请的示例性实施方案的用于锂硫电池的阴极包括：包含硫 - 碳复合材料的阴极活性部分; 以及设置在阴极活性部分的表面的至少一部分上并包括无机氧化物的阴极涂层。

公开(公告)号：US20210167385A1

公开(公告)日：2021-06-03

申请号：US16958599

申请日：2019-01-11

Applicant: LG CHEM, LTD.

Inventor： Jaegil LEE ,  Doo Kyung YANG ,  Yu Mi KIM ,  Yun Kyoung KIM ,  Eunkyung CHO

IPC: H01M4/583 ,  H01M4/36 ,  H01M4/04 ,  H01M4/38

Abstract: A positive electrode slurry composition, a positive electrode manufactured using the same, and a battery including the positive electrode. The positive electrode slurry composition includes a positive electrode active material, a binder, an alcohol, and water, wherein a content of the alcohol is in a range of 0.1 to 10% by weight, based on a total weight of the composition. The slurry composition for manufacturing a positive electrode has effects of highly improving the dispersibility of the positive electrode active material and the conductive material, decreasing the surface roughness of an electrode, and remarkably reducing a curling phenomenon in the electrode. Also, the slurry composition has an economic advantage in that a dispersing agent is not used or an amount of the dispersing agent used can be remarkably reduced.

公开(公告)号：US20170358834A1

公开(公告)日：2017-12-14

申请号：US15524758

申请日：2016-01-13

Applicant: LG CHEM, LTD.

Inventor： Eun Kyung CHO ,  Jong Hyun CHAE ,  Doo Kyung YANG ,  Yu Mi KIM ,  Gi Su PARK ,  Dong Wook LEE

IPC: H01M12/08 ,  H01M4/62 ,  H01M4/90 ,  H01M2/16 ,  H01M4/02

CPC classification number: H01M12/08 ,  H01M2/16 ,  H01M2/1673 ,  H01M2/1686 ,  H01M4/625 ,  H01M4/8605 ,  H01M4/8657 ,  H01M4/90 ,  H01M4/9075 ,  H01M4/925 ,  H01M2004/028 ,  Y02E60/128

Abstract: The present invention provides a lithium-air battery comprising: an air electrode using oxygen as a positive electrode active material; a negative electrode which is disposed apart from the positive electrode; and a separator which is immersed in an electrolyte disposed between the positive electrode and the negative electrode, wherein the air electrode comprises a gas diffusion layer coated with a conductive material, and the separator has a part coated with the conductive material.

公开(公告)号：US20160190606A1

公开(公告)日：2016-06-30

申请号：US14910307

申请日：2014-09-12

Applicant: LG CHEM, LTD.

Inventor： Yu Mi KIM ,  Minchul JANG ,  Byoungkuk SON ,  Gi Su PARK

IPC: H01M4/90 ,  H01M12/06 ,  H01M4/88

CPC classification number: H01M4/90 ,  H01M4/382 ,  H01M4/405 ,  H01M4/8605 ,  H01M4/8673 ,  H01M4/8807 ,  H01M4/8825 ,  H01M4/8828 ,  H01M4/8835 ,  H01M4/923 ,  H01M12/06 ,  H01M12/08 ,  H01M2004/8689 ,  H01M2220/20 ,  Y02E60/128

Abstract: The present disclosure relates to a positive electrode for a lithium-air battery and a method for preparing the same, and the positive electrode for a lithium-air battery according to the present disclosure has advantages in that it improves electrical conductivity and mechanical strength of an electrode, and increases loading amounts.

Abstract translation: 本发明涉及一种锂 - 空气电池用正极及其制造方法，本发明的锂空气电池用正极具有以下优点：提高导电性和机械强度 电极，并增加负载量。

公开(公告)号：US20160233475A1

公开(公告)日：2016-08-11

申请号：US15029723

申请日：2014-09-29

Applicant: LG CHEM, LTD.

Inventor： Byoungkuk SON ,  Seong Ho LEE ,  Minchul JANG ,  Hyungsam CHOI ,  Joong Jin HAN ,  Min Seo KIM ,  Suhwan KIM ,  Seungpyo JEONG ,  Yu Mi KIM ,  Da Young SUNG ,  Youngjea KIM ,  Gi Su PARK

IPC: H01M2/16 ,  H01M4/136 ,  H01M4/134 ,  H01M10/0568 ,  H01M4/62 ,  H01M4/66 ,  H01M10/0569 ,  H01M10/0525 ,  H01M4/38

CPC classification number: H01M2/1686 ,  H01M2/145 ,  H01M2/1646 ,  H01M2/1653 ,  H01M2/166 ,  H01M4/0404 ,  H01M4/134 ,  H01M4/136 ,  H01M4/1397 ,  H01M4/38 ,  H01M4/382 ,  H01M4/5815 ,  H01M4/623 ,  H01M4/625 ,  H01M4/661 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/058 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2220/20

Abstract: The present application relates to a separation membrane and a lithium-sulfur battery including the same, and the separation membrane according to the present application prevents elution of lithium polysulfide in a cathode and suppresses growth of a lithium dendrite generated in an anode, and thus has an effect that a life-span and safety of the battery are improved.

Abstract translation: 本申请涉及一种分离膜和包含该分离膜的锂 - 硫电池，根据本申请的分离膜防止了阴极中多硫化锂的洗脱，并抑制了在阳极中产生的锂枝晶的生长，因此具有 影响电池寿命和安全性的提高。

公开(公告)号：US20150340696A1

公开(公告)日：2015-11-26

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 ,  H01M4/58 ,  H01M4/139 ,  H01M4/583 ,  H01M4/36 ,  H01M4/38

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.

Abstract translation: 本发明涉及一种锂 - 硫电池用正极活性物质及其制备方法，更具体地说，涉及一种锂硫电池用正极活性物质，其特征在于，包含：亲水性部分和疏水性部分的两亲性聚合物; 和硫 - 碳复合材料及其制备方法。 当使用正极活性物质制备锂硫电池时，存在可以提高电极的导电性，循环特性和容量的效果。