公开(公告)号：US20250092540A1

公开(公告)日：2025-03-20

申请号：US18413987

申请日：2024-01-16

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Dong Ki LEE ,  Ung LEE ,  Hyung-Suk OH ,  Byoung Koun MIN ,  Dahye WON ,  Jai Hyun KOH ,  Woong Hee LEE ,  Jongin WOO ,  Byeong Cheul MOON

IPC: C25B11/061 ,  C25B3/05 ,  C25B3/07 ,  C25B11/037 ,  C25B11/091

Abstract: A catalyst electrode for production of 2,5-furandicarboxylic acid according to an embodiment of the present invention includes: a first metal substrate; and a second metal hydroxide coating layer located on a surface of the first metal substrate, wherein the first metal substrate includes one or more micro-sized first metal particles on the surface thereof, and the second metal hydroxide coating layer may be located on a surface of the first metal particles.

公开(公告)号：US20240093388A1

公开(公告)日：2024-03-21

申请号：US18161991

申请日：2023-01-31

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Hyung-Suk OH ,  Woong Hee LEE ,  Ung LEE ,  Jai Hyun KOH ,  Dong Ki LEE ,  Dahye WON ,  Byoung Koun MIN

IPC: C25B9/23 ,  C25B1/23 ,  C25B11/032 ,  C25B11/052 ,  C25B11/081

CPC classification number: C25B9/23 ,  C25B1/23 ,  C25B11/032 ,  C25B11/052 ,  C25B11/081 ,  C25B3/26

Abstract: Proposed is a CO2-reduction membrane electrode assembly (MEA), which is a novel MEA capable of changing a reaction condition to an alkaline condition from a problematic acidic condition unfavorable to reactions on a cathode side during catalytic reactions using a cation exchange membrane (CEM) as a separator. In addition, the MEA can reduce a hydrogen evolution reaction (HER), which is a side reaction. In addition, a method of manufacturing the MEA, and a CO2-reduction assembly including the MEA are also proposed.

公开(公告)号：US20210328229A1

公开(公告)日：2021-10-21

申请号：US17197893

申请日：2021-03-10

Applicant: Korea Institute of Science and Technology

Inventor： Hyung Suk OH ,  Woong Hee LEE ,  Byoung Koun MIN ,  Yun Jeong HWANG ,  Ung LEE ,  Dong Ki LEE ,  Da Hye WON ,  Jai Hyun KOH

IPC: H01M4/90 ,  C25B11/089 ,  B22F1/00

Abstract: Proposed is an iridium alloy catalyst having reversible catalytic activity for an oxygen evolution reaction (OER), a hydrogen evolution reaction (HER), and a hydrogen oxidation reaction (HOR) by including an iridium alloy including iridium (Ir) and nickel (Ni). The iridium alloy catalyst according to the present disclosure is rapidly converted to an iridium alloy catalyst in an oxide form and an iridium alloy catalyst in a metallic form according to applied voltage by controlling its crystallinity. Thus, even in case an oxide layer is formed after the OER, the oxidation layer disappears during the HER and HOR and the properties of an iridium metal catalyst remain, thereby maintaining HER/HOR performance.