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：US20250162900A1

公开(公告)日：2025-05-22

申请号：US18824778

申请日：2024-09-04

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Taegon OH ,  Jaeeun YOON ,  Seong Chan KIM ,  Hyo Jin LEE ,  Albert LEE ,  Seon Joon KIM ,  Seung Sang HWANG ,  Chong Min KOO

IPC: C01G23/00

Abstract: The present invention provides a halogen-free MXene represented by the following formula (1), that has no halogen in its surface functional group by performing an etching process to generate MXene from a MAX Phase material, and after the etching process, performing an impurity removal treatment process of etching and removing impurities using a halogen-free etchant and a halogen-free post-treatment agent, respectively. Mn+1XnTx  [Formula 1] wherein, M is a transition metal element selected from the group consisting of Sc, Ti, V, Cr, Mn, Y, Zr, Nb, Mo, Hf, and Ta, X is at least one of carbon and nitrogen, and n is an integer from 1 to 4, and Tx is a functional group selected from the group consisting of oxygen, alkoxide of 1 to 5 carbon atoms, alkyl, carboxylate, hydroxide, hydride, oxide, sub-oxide, nitride, sub-nitride, sulfide, sulfonate, thiol, and epoxide.

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.