公开(公告)号：US20220349075A1

公开(公告)日：2022-11-03

申请号：US17621532

申请日：2020-12-16

Applicant: LG Chem, Ltd.

Inventor： Myung Hun Kim ,  Yeon Yi Kim ,  Hee Jun Eom ,  Dong Chul Lee

IPC: C25B11/093 ,  C25B1/26 ,  C25B1/04 ,  C25B11/061

Abstract: The present technology relates to an electrode for electrolysis which has a coating layer containing an ytterbium oxide, wherein the electrode for electrolysis of the present technology is characterized by exhibiting excellent durability and improved overvoltage. Further, the present technology relates to a method of preparing an electrode for electrolysis which includes: applying a coating composition on at least one surface of a metal base, and coating by drying and heat-treating the metal base on which the coating composition has been applied, wherein the coating composition includes a ruthenium precursor and an ytterbium precursor.

公开(公告)号：US20220259062A1

公开(公告)日：2022-08-18

申请号：US17608357

申请日：2020-09-14

Applicant: LG Chem, Ltd.

Inventor： Jung Ho Choi ,  In Sung Hwang ,  Hun Min Park ,  Dong Chul Lee ,  Gyo Hyun Hwang ,  Kwang Hyun Kim ,  Jung Up Bang

IPC: C01G19/02 ,  C25B1/34 ,  C25B11/077 ,  C23C22/48

Abstract: The present invention provides a tin oxide forming composition and a tin oxide forming method using the tin oxide forming composition. The tin oxide forming composition of the present invention is easy to manufacture and is capable of forming a tin oxide with a high yield.

公开(公告)号：US11472702B2

公开(公告)日：2022-10-18

申请号：US15774915

申请日：2017-10-25

Applicant: LG CHEM, LTD.

Inventor： Hee Jun Eom ,  Dong Chul Lee ,  Yeon Yi Kim ,  Jung Ho Choi

IPC: C01B7/07 ,  B01D11/04

Abstract: The present invention relates to a method of purifying waste hydrochloric acid, and more particularly, to a method of purifying waste hydrochloric acid which includes preparing an extraction solution by dissolving an extractant in an organic solvent (S1), extracting metallic components with the organic solvent by adding the extraction solution to the waste hydrochloric acid (S2), separating a waste hydrochloric acid layer and the organic solvent containing the metallic components (S3), and obtaining purified hydrochloric acid by recovering the separated (fractionated) waste hydrochloric acid layer (S4), wherein the extractant is used in an amount of 40 moles or more based on 1 mole of iron (Fe) included in the waste hydrochloric acid, and the waste hydrochloric acid and the extraction solution are mixed in a volume ratio of 1:0.1 to 1:1.

公开(公告)号：US20220235477A1

公开(公告)日：2022-07-28

申请号：US17621966

申请日：2021-01-08

Applicant: LG Chem, Ltd.

Inventor： Myung Hun Kim ,  Yeon Yi Kim ,  Hee Jun Eom ,  Dong Chul Lee

IPC: C25B11/093 ,  C25B11/063 ,  C25B1/04 ,  C25B1/26

Abstract: The present disclosure relates to an electrode for electrolysis which includes a metal base layer, and a coating layer containing a ruthenium oxide, a cerium oxide, and a nickel oxide, wherein the coating layer is formed on at least one surface of the base layer. The electrode for electrolysis of the present disclosure is characterized by exhibiting excellent durability and improved overvoltage.

公开(公告)号：US20220364250A1

公开(公告)日：2022-11-17

申请号：US17621358

申请日：2020-12-14

Applicant: LG Chem, Ltd.

Inventor： Hee Jun Eom ,  Dong Chul Lee ,  Yeon Yi Kim ,  Myung Hun Kim

IPC: C25B11/093 ,  C25B1/04 ,  C25B1/26 ,  C25B11/02

Abstract: The present disclosure relates to an electrode for electrolysis, in which a structure of a metal base layer is optimized, and a preparation method thereof, wherein the electrode for electrolysis of the present invention exhibits an overvoltage improved in comparison to a conventional electrode while having excellent durability due to a small loss of a coating layer.

公开(公告)号：US12146232B2

公开(公告)日：2024-11-19

申请号：US17051667

申请日：2019-07-03

Applicant: LG CHEM, LTD.

Inventor： Yeon Yi Kim ,  Hee Jun Eom ,  Myung Hun Kim ,  Dong Chul Lee ,  Sang Yun Jung ,  Gyo Hyun Hwang ,  Jong Wook Jung ,  Yong Ju Bang

IPC: C25B11/093 ,  C25B1/04 ,  C25B11/02 ,  C25B11/095 ,  C25B11/097

Abstract: Provided is an active layer composition of a reduction electrode for brine electrolysis containing a metal precursor mixture containing a ruthenium precursor, a platinum precursor, and a lanthanide metal precursor, and an organic solvent containing an alcohol-based compound and an amine-based compound. Also provided is a reduction electrode containing a metal substrate and an active layer that is a dried and heat treated active layer composition positioned on the metal substrate.

公开(公告)号：US20230243053A1

公开(公告)日：2023-08-03

申请号：US18023905

申请日：2021-11-12

Applicant: LG Chem, Ltd.

Inventor： Myung Hun Kim ,  Hee Jun Eom ,  Dong Chul Lee

IPC: C25B11/097 ,  C25B11/061

CPC classification number: C25B11/097 ,  C25B11/061

Abstract: A method for manufacturing an electrode for electrolysis, which includes applying a coating composition on at least one surface of a metal substrate, and drying and heat-treating the metal substrate applied with the coating composition to form a coating layer, in which urea and octadecylamine are both used in the coating composition to improve the durability and performance of an electrode for electrolysis to be manufactured.

公开(公告)号：US20220205120A1

公开(公告)日：2022-06-30

申请号：US17609999

申请日：2020-09-23

Applicant: LG Chem, Ltd.

Inventor： Yeon Yi Kim ,  Hee Jun Eom ,  Myung Hun Kim ,  Dong Chul Lee

IPC: C25B11/093 ,  C25B1/34

Abstract: The present invention relates to an electrode for electrolysis having a coating layer containing a ruthenium oxide, a platinum group oxide, and a manganese oxide. The electrode for electrolysis of the present invention is characterized by exhibiting excellent durability and an improved overvoltage since a tin oxide contained in a coating layer interacts with a ruthenium oxide and a platinum group oxide which are contained together to improve electrical conductivity.

公开(公告)号：US20230295819A1

公开(公告)日：2023-09-21

申请号：US18006306

申请日：2021-11-08

Applicant: LG Chem, Ltd.

Inventor： Yoon Bin Park ,  In Sung Hwang ,  Hun Min Park ,  Dong Chul Lee

IPC: C25B11/097 ,  C25B11/053 ,  C25B11/063

CPC classification number: C25B11/097 ,  C25B11/053 ,  C25B11/063 ,  C25B1/34

Abstract: The present invention relates to an electrode for electrolysis and a method for manufacturing the same, wherein an electrode coating layer for electrolysis is provided in plurality, and the tin content in each coating layer is configured to increase as the distance from a substrate increases, and the titanium content therein is configured to decrease as the distance from the substrate increases, so that excellent performance is maintained, and also delamination and the like does not occur during firing, so that excellent durability may be implemented.

公开(公告)号：US11499239B2

公开(公告)日：2022-11-15

申请号：US16959584

申请日：2019-06-04

Applicant: LG CHEM, LTD.

Inventor： Hun Min Park ,  Jung Ho Choi ,  In Sung Hwang ,  Kwang Hyun Kim ,  Jung Up Bang ,  Dong Chul Lee ,  Gyo Hyun Hwang

IPC: C25B11/04 ,  C25B11/075 ,  B05D1/04 ,  B05D3/00 ,  B05D3/02 ,  B05D3/10 ,  C25B1/34 ,  C25B11/051

Abstract: Provided are an anode for electrolysis, which includes a metal base, and a catalyst layer disposed on at least one surface of the metal base, wherein the catalyst layer includes a composite metal oxide of ruthenium, iridium, titanium, and platinum, and a metal in the composite metal oxide does not include palladium, wherein, when the catalyst layer is equally divided into a plurality of pixels, a standard deviation of iridium compositions of the plurality of equally divided pixels is 0.40 or less, and a method of preparing the same.