Patents by Inventor Injoon Jang
Injoon Jang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 11430996Abstract: A method is disclosed for preparing a metal single-atom catalyst for a fuel cell including the steps of depositing metal single atoms to a nitrogen precursor powder, mixing the metal single atom-deposited nitrogen precursor powder with a carbonaceous support, and carrying out heat treatment. The step of depositing metal single atoms is carried out by sputtering, thermal evaporation, E-beam evaporation or atomic layer deposition. The method uses a relatively lower amount of chemical substances as compared to conventional methods, is eco-friendly, and can produce a single-atom catalyst at low cost. In addition, unlike conventional methods which are limited to certain metallic materials, the present method can be applied regardless of the type of metal.Type: GrantFiled: February 26, 2020Date of Patent: August 30, 2022Assignee: Korea Institute of Science and TechnologyInventors: Sung Jong Yoo, Injoon Jang, Hee-Young Park, So Young Lee, Hyun Seo Park, Jin Young Kim, Jong Hyun Jang, Hyoung-Juhn Kim
-
Patent number: 11173481Abstract: Disclosed are a metal single-atom catalyst and a method for preparing the same. The method uses a minimal amount of chemicals and is thus environmentally friendly compared to conventional chemical and/or physical methods. In addition, the method enables the preparation of a single-atom catalyst in a simple and economical manner without the need for further treatment such as acid treatment or heat treatment. Furthermore, the method is universally applicable to the preparation of single-atom catalysts irrespective of the kinds of metals and supports, unlike conventional methods that suffer from very limited choices of metal materials and supports. Therefore, the method can be widely utilized to prepare various types of metal single-atom catalysts. All metal atoms in the metal single-atom catalyst can participate in catalytic reactions. This optimal atom utilization achieves maximum reactivity per unit mass and can minimize the amount of the metal used, which is very economical.Type: GrantFiled: August 7, 2019Date of Patent: November 16, 2021Assignees: Korea Institute of Science and Technology, Global Frontier Center for Multiscale Energy SystemsInventors: Sung Jong Yoo, Injoon Jang, Hee-Young Park, So Young Lee, Hyun Seo Park, Jin Young Kim, Jong Hyun Jang, Hyoung-Juhn Kim
-
Publication number: 20210159512Abstract: The present disclosure relates to a method for preparing a metal single-atom catalyst for a fuel cell. The method for preparing a metal single-atom catalyst uses a relatively lower amount of chemical substances as compared to the conventional methods and thus is eco-friendly, uses no liquid through the whole process and avoids a need for additional steps for separating and/or washing the catalyst after its synthesis, thereby allowing simplification of the process, and can produce a single-atom catalyst at low cost. In addition, unlike the conventional methods having a limitation in metallic materials, the method can be applied in common regardless of types of metals, and thus is significantly advantageous in that it can be applied widely to obtain various types of metal single-atom catalysts. Further, in the method for preparing a metal single-atom catalyst, metal atoms totally participate in the reaction. Thus, the method can minimize the usage of metal to provide high cost-efficiency.Type: ApplicationFiled: February 26, 2020Publication date: May 27, 2021Applicants: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY, GLOBAL FRONTIER CENTER FOR MULTISCALE ENERGY SYSTEMSInventors: Sung Jong YOO, Injoon JANG, Hee-Young PARK, So Young LEE, Hyun Seo PARK, Jin Young KIM, Jong Hyun JANG, Hyoung-Juhn KIM
-
Patent number: 10850270Abstract: Disclosed is a method for preparing a carbon-supported metal oxide and/or alloy nanoparticle catalyst. According to the method, a carbon-supported metal oxide and/or alloy nanoparticle catalyst is prepared by depositing metal oxide and/or alloy nanoparticles on a water-soluble support and dissolving the metal oxide and/or alloy nanoparticles deposited on the water-soluble support in an anhydrous polar solvent containing carbon dispersed therein to support the metal oxide and/or alloy nanoparticles on the carbon. The anhydrous polar solvent has much lower solubility for the water-soluble support than water and is used to dissolve the water-soluble support.Type: GrantFiled: October 31, 2018Date of Patent: December 1, 2020Assignees: Korea Institute of Science and Technology, Global Frontier Center for Multiscale Energy SystemsInventors: Sung Jong Yoo, Injoon Jang, So Young Lee, Hyun Seo Park, Jin Young Kim, Jong Hyun Jang, Hyoung-Juhn Kim
-
Publication number: 20200230589Abstract: Disclosed are a metal single-atom catalyst and a method for preparing the same. The method uses a minimal amount of chemicals and is thus environmentally friendly compared to conventional chemical and/or physical methods. In addition, the method enables the preparation of a single-atom catalyst in a simple and economical manner without the need for further treatment such as acid treatment or heat treatment. Furthermore, the method is universally applicable to the preparation of single-atom catalysts irrespective of the kinds of metals and supports, unlike conventional methods that suffer from very limited choices of metal materials and supports. Therefore, the method can be widely utilized to prepare various types of metal single-atom catalysts. All metal atoms in the metal single-atom catalyst can participate in catalytic reactions. This optimal atom utilization achieves maximum reactivity per unit mass and can minimize the amount of the metal used, which is very economical.Type: ApplicationFiled: August 7, 2019Publication date: July 23, 2020Applicants: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY, GLOBAL FRONTIER CENTER FOR MULTISCALE ENERGY SYSTEMSInventors: Sung Jong YOO, Injoon JANG, Hee-Young PARK, So Young LEE, Hyun Seo PARK, Jin Young KIM, Jong Hyun JANG, Hyoung-Juhn KIM
-
Patent number: 10435802Abstract: Provided are a cathode catalyst for water electrolysis devices and a method for preparing the same. More specifically, provided are a cathode catalyst for water electrolysis devices that exhibits both high activity and high electrical conductivity, compared to conventional transition metal phosphide catalysts, and a method for preparing the same.Type: GrantFiled: March 2, 2018Date of Patent: October 8, 2019Assignee: Korea Institute of Science and TechnologyInventors: Sung Jong Yoo, Injoon Jang, So Young Lee, Jin Young Kim, Jong Hyun Jang, Hyoung-Juhn Kim, Jonghee Han, Hyun Seo Park
-
Publication number: 20190134620Abstract: Disclosed is a method for preparing a carbon-supported metal oxide and/or alloy nanoparticle catalyst. According to the method, a carbon-supported metal oxide and/or alloy nanoparticle catalyst is prepared by depositing metal oxide and/or alloy nanoparticles on a water-soluble support and dissolving the metal oxide and/or alloy nanoparticles deposited on the water-soluble support in an anhydrous polar solvent containing carbon dispersed therein to support the metal oxide and/or alloy nanoparticles on the carbon. The anhydrous polar solvent has much lower solubility for the water-soluble support than water and is used to dissolve the water-soluble support.Type: ApplicationFiled: October 31, 2018Publication date: May 9, 2019Applicants: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY, GLOBAL FRONTIER CENTER FOR MULTISCALE ENERGY SYSTEMSInventors: Sung Jong YOO, Injoon JANG, So Young LEE, Hyun Seo PARK, Jin Young KIM, Jong Hyun JANG, Hyoung-Juhn KIM
-
Publication number: 20180258544Abstract: Provided are a cathode catalyst for water electrolysis devices and a method for preparing the same. More specifically, provided are a cathode catalyst for water electrolysis devices that exhibits both high activity and high electrical conductivity, compared to conventional transition metal phosphide catalysts, and a method for preparing the same.Type: ApplicationFiled: March 2, 2018Publication date: September 13, 2018Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Sung Jong Yoo, Injoon Jang, So Young Lee, Jin Young Kim, Jong Hyun Jang, Hyoung-Juhn Kim, Jonghee Han, Hyun Seo Park