Patents by Inventor Seokin Choi

Seokin Choi 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).

  • Publication number: 20250149652
    Abstract: A composite sulfide-based solid electrolyte includes a plurality of primary particles and a secondary particle comprising a lithium halide represented by Formula 1, wherein the primary particles comprise a sulfide-based solid electrolyte and the lithium halide is located between the primary particles, and a method of preparing the same: [Formula 1]=LiX, wherein X is any one selected from F, CI. Br and I.
    Type: Application
    Filed: November 22, 2023
    Publication date: May 8, 2025
    Inventors: Seokin Choi, Youngbok Kim, Wonrak Lee
  • Publication number: 20230238535
    Abstract: Disclosed are a positive electrode binder for a lithium secondary battery capable of improving battery performance, by being constituted by a cationic monomer, and thus capturing lithium polysulfide that occurs during charging and discharging of the battery, and a positive electrode for a lithium secondary battery and a lithium secondary battery comprising the same. The positive electrode binder for the lithium secondary battery comprises a cationic (meth)acrylate-based monomer containing one or more cations, or a derivative thereof.
    Type: Application
    Filed: August 10, 2021
    Publication date: July 27, 2023
    Inventors: Soohyun KIM, Jong-Chan LEE, Seokin CHOI, Kwonnam SOHN, Dong Gi HONG, Ji-Hoon BAIK, Jin Hong LEE
  • Publication number: 20220384782
    Abstract: Disclosed are a positive electrode for a lithium secondary battery which can improve battery performance by coating the modified bottom-up graphene oxide (SBGO) on the positive electrode active material, and thus preventing the leaching of lithium polysulfide, a manufacturing method thereof, and a lithium secondary battery comprising the positive electrode. The positive electrode for the lithium secondary battery includes a positive electrode active material; and bottom-up graphene oxides coated on a surface of the positive electrode active material, where the bottom-up graphene oxides are cross-linked with each other through a hydrocarbon compound containing a cationic functional group.
    Type: Application
    Filed: August 10, 2021
    Publication date: December 1, 2022
    Inventors: Soohyun KIM, Jong-Chan LEE, Seokin CHOI, Kwonnam SOHN, Daun JEONG, Huiseob SHIN
  • Patent number: 11433373
    Abstract: Provided here are adsorbent compositions containing polyvinyl alcohol-bonded pellets of zeolite templated carbon. Also provided here are methods of producing adsorbent compositions by forming an aqueous mixture containing a binder, water, and zeolite-templated carbon; subjecting the aqueous mixture to a drying process to remove the water and form a dry mixture of the binder and the zeolite-templated carbon, and compacting the dry mixture of the binder and the zeolite-templated carbon to form the binder-bonded pellets of the zeolite templated carbon.
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: September 6, 2022
    Inventors: Yuguo Wang, Rashid M. Othman, Minkee Choi, Seokin Choi
  • Patent number: 11208327
    Abstract: A method for the large-scale synthesis of a zeolite-templated carbon (ZTC). The method includes the steps of: introducing a bed material comprising a zeolite to a fluidized bed reactor and heating the bed material to a temperature between 550° C. and 800° C.; fluidizing the bed material with a fluidizing gas and maintaining the temperature of the bed material between 550° C. and 800° C.; introducing an organic carbon precursor while fluidizing the zeolite for a period of time such that carbon is deposited on the zeolite by chemical vapor deposition to produce a zeolite-carbon composite; and treating the zeolite-carbon composite with an acid solution such that the zeolite template is dissolved and the ZTC is obtained.
    Type: Grant
    Filed: January 14, 2020
    Date of Patent: December 28, 2021
    Inventors: Yuguo Wang, Rashid M. Othman, Minkee Choi, Seokin Choi
  • Publication number: 20210214224
    Abstract: A method for the large-scale synthesis of a zeolite-templated carbon (ZTC). The method includes the steps of: introducing a bed material comprising a zeolite to a fluidized bed reactor and heating the bed material to a temperature between 550° C. and 800° C.; fluidizing the bed material with a fluidizing gas and maintaining the temperature of the bed material between 550° C. and 800° C.; introducing an organic carbon precursor while fluidizing the zeolite for a period of time such that carbon is deposited on the zeolite by chemical vapor deposition to produce a zeolite-carbon composite; and treating the zeolite-carbon composite with an acid solution such that the zeolite template is dissolved and the ZTC is obtained.
    Type: Application
    Filed: January 14, 2020
    Publication date: July 15, 2021
    Applicants: SAUDI ARABIAN OIL COMPANY, Korea Advanced Institute of Science and Technology
    Inventors: Yuguo WANG, Rashid M. OTHMAN, Minkee CHOI, Seokin CHOI
  • Publication number: 20200290016
    Abstract: Provided here are adsorbent compositions containing polyvinyl alcohol-bonded pellets of zeolite templated carbon. Also provided here are methods of producing adsorbent compositions by forming an aqueous mixture containing a binder, water, and zeolite-templated carbon; subjecting the aqueous mixture to a drying process to remove the water and form a dry mixture of the binder and the zeolite-templated carbon, and compacting the dry mixture of the binder and the zeolite-templated carbon to form the binder-bonded pellets of the zeolite templated carbon.
    Type: Application
    Filed: December 2, 2019
    Publication date: September 17, 2020
    Applicants: Saudi Arabian Oil Company, Korea Advanced Institute of Science and Technology
    Inventors: Yuguo WANG, Rashid M. OTHMAN, Minkee CHOI, Seokin CHOI
  • Patent number: 10421058
    Abstract: Embodiments provide a methane microporous carbon adsorbent including a thermally-treated CVD carbon having a shape in the form of a negative replica of a crystalline zeolite has a BET specific surface area, a micropore volume, a micropore to mesopore volume ratio, a stored methane value and a methane delivered value and a sequential carbon synthesis method for forming the methane microporous carbon adsorbent. Introducing an organic precursor gas for a chemical vapor deposition (CVD) period to a crystalline zeolite that is maintained at a CVD temperature forms the carbon-zeolite composite. Introducing a non-reactive gas for a thermal treatment period to the carbon-zeolite composite maintained at a thermal treatment temperature forms the thermally-treated carbon-zeolite composite. Introducing an aqueous strong mineral acid mixture to the thermally-treated carbon-zeolite composite forms the methane microporous carbon adsorbent.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: September 24, 2019
    Assignees: SAUDI ARABIAN OIL COMPANY, KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Yuguo Wang, Cemal Ercan, Rashid M. Othman, Minkee Choi, Seokin Choi
  • Publication number: 20170225147
    Abstract: Embodiments provide a methane microporous carbon adsorbent including a thermally-treated CVD carbon having a shape in the form of a negative replica of a crystalline zeolite has a BET specific surface area, a micropore volume, a micropore to mesopore volume ratio, a stored methane value and a methane delivered value and a sequential carbon synthesis method for forming the methane microporous carbon adsorbent. Introducing an organic precursor gas for a chemical vapor deposition (CVD) period to a crystalline zeolite that is maintained at a CVD temperature forms the carbon-zeolite composite. Introducing a non-reactive gas for a thermal treatment period to the carbon-zeolite composite maintained at a thermal treatment temperature forms the thermally-treated carbon-zeolite composite. Introducing an aqueous strong mineral acid mixture to the thermally-treated carbon-zeolite composite forms the methane microporous carbon adsorbent.
    Type: Application
    Filed: February 15, 2017
    Publication date: August 10, 2017
    Inventors: Yuguo WANG, Cemal ERCAN, Rashid M. OTHMAN, Minkee CHOI, Seokin CHOI
  • Publication number: 20170225146
    Abstract: Embodiments provide a methane microporous carbon adsorbent including a thermally-treated CVD carbon having a shape in the form of a negative replica of a crystalline zeolite has a BET specific surface area, a micropore volume, a micropore to mesopore volume ratio, a stored methane value and a methane delivered value and a sequential carbon synthesis method for forming the methane microporous carbon adsorbent. Introducing an organic precursor gas for a chemical vapor deposition (CVD) period to a crystalline zeolite that is maintained at a CVD temperature forms the carbon-zeolite composite. Introducing a non-reactive gas for a thermal treatment period to the carbon-zeolite composite maintained at a thermal treatment temperature forms the thermally-treated carbon-zeolite composite. Introducing an aqueous strong mineral acid mixture to the thermally-treated carbon-zeolite composite forms the methane microporous carbon adsorbent.
    Type: Application
    Filed: February 15, 2017
    Publication date: August 10, 2017
    Inventors: Yuguo WANG, Cemal ERCAN, Rashid M. OTHMAN, Minkee CHOI, Seokin CHOI
  • Patent number: 9604194
    Abstract: A methane microporous carbon adsorbent comprising a thermally-treated CVD carbon having a shape in the form of a negative replica of a crystalline zeolite has a BET specific surface area, a micropore volume, a micropore to mesopore volume ratio, a stored methane value and a methane delivered value and a sequential carbon synthesis method for forming the methane microporous carbon adsorbent. Introducing an organic precursor gas for a chemical vapor deposition (CVD) period to a crystalline zeolite that is maintained at a CVD temperature forms the carbon-zeolite composite. Introducing a non-reactive gas for a thermal treatment period to the carbon-zeolite composite maintained at a thermal treatment temperature forms the thermally-treated carbon-zeolite composite. Introducing an aqueous strong mineral acid mixture to the thermally-treated carbon-zeolite composite forms the methane microporous carbon adsorbent.
    Type: Grant
    Filed: October 14, 2014
    Date of Patent: March 28, 2017
    Assignees: SAUDI ARABIAN OIL COMPANY, KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Yuguo Wang, Cemal Ercan, Rashid M. Othman, Minkee Choi, Seokin Choi
  • Publication number: 20160101407
    Abstract: A methane microporous carbon adsorbent comprising a thermally-treated CVD carbon having a shape in the form of a negative replica of a crystalline zeolite has a BET specific surface area, a micropore volume, a micropore to mesopore volume ratio, a stored methane value and a methane delivered value and a sequential carbon synthesis method for forming the methane microporous carbon adsorbent. Introducing an organic precursor gas for a chemical vapor deposition (CVD) period to a crystalline zeolite that is maintained at a CVD temperature forms the carbon-zeolite composite. Introducing a non-reactive gas for a thermal treatment period to the carbon-zeolite composite maintained at a thermal treatment temperature forms the thermally-treated carbon-zeolite composite. Introducing an aqueous strong mineral acid mixture to the thermally-treated carbon-zeolite composite forms the methane microporous carbon adsorbent.
    Type: Application
    Filed: October 14, 2014
    Publication date: April 14, 2016
    Inventors: Yuguo Wang, Cemal Ercan, Rashid M. Othman, Minkee Choi, Seokin Choi