公开(公告)号：US20210261415A1

公开(公告)日：2021-08-26

申请号：US17179332

申请日：2021-02-18

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY ,  DREXEL UNIVERSITY

Inventor： Yury GOGOTSI ,  Kanit HANTANASIRISAKUL ,  Chong Min KOO ,  Aamir IQBAL ,  Soon Man HONG ,  Seon Joon KIM ,  Seung Sang HWANG ,  Kyung Youl BAEK ,  Albert LEE ,  Sangho CHO

IPC: C01B21/082 ,  H05K9/00

Abstract: In an aspect, the present disclosure provides a heat-treated transition metal carbonitride MXene film annealed at high temperatures and a polymer composite comprising the same. In another aspect, the present disclosure provides a method for producing a heat-treated transition metal carbonitride MXene film comprising: obtaining a MXene aqueous solution containing dispersed 2-dimensional (2D) MXenes through an acid etching process; filtering the obtained MXene aqueous solution through a vacuum filtration process to produce a free-standing film; and annealing the produced free-standing film at high temperatures to obtain a heat-treated transition metal carbonitride MXene film. In still another aspect, the present disclosure provides an electromagnetic interference (EMI) shielding method comprising: superposing a coating comprising a heat-treated transition metal carbonitride MXene film on at least one surface of an object in a contact or non-contact manner.

公开(公告)号：US20240417581A1

公开(公告)日：2024-12-19

申请号：US18408448

申请日：2024-01-09

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Seon Joon KIM ,  Seung Sang HWANG ,  Albert LEE ,  Taegon OH ,  Tae Yun KO ,  Junpyo HONG

IPC: C09D11/52 ,  C01B32/907 ,  C09D11/033 ,  C09D11/037 ,  H05K9/00

Abstract: Disclosed in the present specification are a two-dimensional MXene surface-modified with a metal-organic network, a method of preparing the same, a MXene organic ink containing the same, and uses (e.g., an electromagnetic wave shielding material). In one aspect, the two-dimensional MXene surface-modified with a metal-organic network according to the present invention can use various organic ligands by linking the surface with the organic through the metal, and can be stably dispersed in various organic solvents, especially in industrial non-polar organic solvents as well as polar organic solvents, thereby being applied to a more general-purpose technologies, and securing stability against chemical oxidation to improve long-term stability.

公开(公告)号：US20240191027A1

公开(公告)日：2024-06-13

申请号：US18501974

申请日：2023-11-03

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Albert LEE ,  Seung Sang Hwang ,  Seon Joon Kim ,  Taegon Oh ,  Ji Yoon Jung ,  Young Sang Park ,  Dong-Yeop Yoo ,  Jin Suk Ku ,  Junggyu Kim

IPC: C08G73/06 ,  C25B9/23 ,  C25B13/08 ,  H01M8/1004 ,  H01M8/103 ,  H01M8/1039

CPC classification number: C08G73/0611 ,  C25B9/23 ,  C25B13/08 ,  H01M8/1004 ,  H01M8/103 ,  H01M8/1039 ,  H01M2008/1095 ,  H01M2300/0082

Abstract: The specification relates an ionomer comprising a compound derived from N,N-diallylamine and a method for preparing the same. The ionomer according to one embodiment of the disclosure has an effect of providing excellent battery performance by controlling the ion exchange capability in a wide range while having excellent alkaline durability.

公开(公告)号：US20220339820A1

公开(公告)日：2022-10-27

申请号：US17501806

申请日：2021-10-14

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Soon Man HONG ,  Hang Kyu CHO ,  Seung Sang HWANG ,  Chong Min KOO ,  Seon Joon KIM ,  Albert LEE ,  Hwan Gyu LEE ,  Junpyo HONG

IPC: B29B7/48 ,  C08J11/24 ,  C08J11/14 ,  B01J3/00 ,  B01J19/02

Abstract: Disclosed is a recycling apparatus for a cross-linked polyethylene resin using a twin screw extruder. The recycling apparatus for a cross-linked polyethylene resin using a twin screw extruder according to an embodiment of the present disclosure includes: a raw material supply unit configured to supply a raw material that is a cross-linked polyethylene resin; and a twin screw extruder configured to receive the raw material from the raw material supply unit, the twin screw extruder including a cylinder and a twin screw installed inside the cylinder to rotate in the same direction, the twin screw extruder being configured to de-crosslink and recycle the raw material under a de-crosslinking reaction temperature and reaction pressure atmosphere while continuously transporting the raw material along the twin screw by the rotation of the twin screw.

公开(公告)号：US20210269664A1

公开(公告)日：2021-09-02

申请号：US17173268

申请日：2021-02-11

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Chong Min KOO ,  In Sik IN ,  Tae Yun KO ,  Daesin KIM ,  Se Hyun DOO ,  Seon Joon KIM ,  Soon Man HONG ,  Seung Sang HWANG ,  Kyung Youl BAEK ,  Albert LEE ,  Sangho CHO

IPC: C09D11/52 ,  C09D11/037 ,  C09D11/033 ,  C07F7/28 ,  C07F11/00 ,  C07F9/00 ,  H01B1/20

Abstract: The present disclosure relates to 2-dimensional MXenes surface-modified with catechol derivatives, a method for preparing the same, MXene organic ink including the same, and use thereof (e.g. flexible electrodes, conducive cohesive/adhesive materials, electromagnetic wave-shielding materials, flexible heaters, sensors, energy storage devices). Particularly, the simple, fast, and scalable surface-functionalization process of MXenes using catechol derivatives (e.g. ADOPA) organic ligands significantly improves the dispersion stability in various organic solvents (including ethanol, isopropyl alcohol, acetone and acetonitrile) and produces highly concentrated organic liquid crystals of various MXenes (including Ti2CTx, Nb2CTx, V2CTx, Mo2CTx, Ti3C2Tx, Ti3CNTx, Mo2TiC2Tx, and Mo2Ti2C3Tx). Such products offer excellent electrical conductivity, improved oxidation stability, excellent coating and adhesion abilities to various hydrophobic substrates, and composite processability with hydrophobic polymers. This finding will lead to further studies on the structures, properties, and physics of the organic MXene liquid crystals and their practical applications.

公开(公告)号：US20240204208A1

公开(公告)日：2024-06-20

申请号：US18503585

申请日：2023-11-07

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Albert LEE ,  Seung Sang HWANG ,  Seon Joon KIM ,  Taegon OH ,  Ji Yoon JUNG ,  Young Sang PARK ,  Dong Jun HWANG ,  Gwan Hyun CHOI

IPC: H01M4/86 ,  H01M4/90 ,  H01M4/92 ,  H01M8/1004

CPC classification number: H01M4/8657 ,  H01M4/9008 ,  H01M4/928 ,  H01M8/1004 ,  H01M2004/8689

Abstract: The present specification discloses an electrochemical catalyst of core-shell structure and manufacturing method thereof. The electrochemical catalyst according to one embodiment of the disclosure provides an effect of being stable in an alkaline environment that is not lost in an aqueous solution while having a high ion exchange capacity and a method for preparing the same.

公开(公告)号：US20210362142A1

公开(公告)日：2021-11-25

申请号：US17162639

申请日：2021-01-29

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Kyung Youl BAEK ,  Soon Man HONG ,  Seung Sang HWANG ,  Chong Min KOO ,  Seon Joon KIM ,  Albert LEE ,  Jin Young SEO ,  Min Hyuk CHOI ,  Yu Ri LEE ,  Sejin KIM ,  DO XUAN HUY ,  Que Thi Nguyen ,  Sangho CHO

IPC: B01J31/16 ,  B01J37/02 ,  B01J35/00 ,  B01J31/06 ,  B01J37/34 ,  A62D3/35

Abstract: Provided are a catalyst composition with improved processability and chemical warfare agent degradation ability, a film composite manufactured by casting the same, and a preparation method thereof. Specifically, provided are a catalyst composition including a copolymer of a first polymer and a second polymer; and a metal-organic framework (MOF), and a film composite including the same, wherein processability and catalytic activity are improved.