公开(公告)号：US20210292917A1

公开(公告)日：2021-09-23

申请号：US17017845

申请日：2020-09-11

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

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

IPC: C25B1/00 ,  C25B1/10 ,  C25B9/08 ,  C25B9/18 ,  C25B15/08 ,  B01D53/26 ,  H02S10/40 ,  H02S30/10 ,  H02S40/30

Abstract: Disclosed is a hydrogen production and storage system using solar energy which converts solar energy into electric energy through a solar panel, operates a water electrolysis reactor using the electric energy to produce hydrogen, and stores the hydrogen at a high pressure in a hydrogen storage tank through a water tank, a pressure control valve, etc.

公开(公告)号：US20190319141A1

公开(公告)日：2019-10-17

申请号：US16023859

申请日：2018-06-29

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Byoung Koun MIN ,  Gi Soon PARK ,  Hyung Suk OH ,  Yun Jeong HWANG

IPC: H01L31/032 ,  H01L31/0392 ,  C23C16/02 ,  C23C16/30

Abstract: Methods of manufacturing a CIGS thin film for a solar cell are provided. According to the method, a CIGS thin film having an ideal double band gap grade structure with a large particle size may be obtained by heat-treating a solution-treated CIG oxide thin film by a three-step chalcogenization process. Accordingly, performance of the solar cell may be improved.

公开(公告)号：US20230057916A1

公开(公告)日：2023-02-23

申请号：US17724609

申请日：2022-04-20

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Ung LEE ,  Da Hye WON ,  Jai Hyun KOH ,  Dong Ki LEE ,  Hyung Suk OH ,  Byoung Koun MIN

IPC: C25B15/08 ,  B01D53/62 ,  B01D53/78 ,  B01D53/96 ,  C25B1/23 ,  C25B9/19 ,  C25B9/70 ,  C25B11/052 ,  C25B11/065 ,  C25B11/081 ,  H01M8/0656 ,  H01M8/0612 ,  B01J19/24 ,  C07C29/151

Abstract: A system of utilizing carbon dioxide comprises a carbon dioxide capturing device for capturing carbon dioxide, an electrochemical reaction device for producing synthetic gas by reducing the carbon dioxide captured by the carbon dioxide capturing device, a hydrogen carrier manufacturing device for manufacturing a hydrogen carrier material by using the synthetic gas produced by the electrochemical reaction device, a dehydrogenation device for producing hydrogen from the hydrogen carrier material manufactured by the hydrogen carrier manufacturing device, and a hydrogen utilization device for utilizing hydrogen produced by the dehydrogenation device, wherein the dehydrogenation device further produces carbon dioxide from the hydrogen carrier material and supplies the carbon dioxide to the carbon dioxide capturing device.

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.