Patents by Inventor Hee Sung Choi

Hee Sung 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).

  • Patent number: 12095389
    Abstract: The present invention relates to an triboelectric nanogenerator using an ionic elastomer that increases internal electric capacity and allows a large amount of electric charge to be located on a surface to generate a large amount of electrical energy. The triboelectric nanogenerator according to the present invention includes a first electrode; an ionic elastomer disposed on the first electrode and including an elastomer and an ionic liquid; a second electrode disposed to be spaced apart from the first electrode and electrically connected to the first electrode; and an insulator disposed under the second electrode, selectively contacting the ionic elastomer, and formed of a material that has a negative charge compared to the ionic elastomer.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: September 17, 2024
    Assignees: UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY, IUCF-HYU (INDUSTRY-UNIVERISTY COOPERATION FOUNDATION HANYANG UNIVERSITY)
    Inventors: Duk Hyun Choi, Do Hwan Kim, Hee Jae Hwang, Joo Sung Kim, Eun Song Jee
  • Patent number: 12014883
    Abstract: A tantalum capacitor includes a sintered tantalum body including tantalum powder, a conductive polymer layer disposed on the sintered tantalum body and including a first filler, a carbon layer disposed on the conductive polymer layer; and a tantalum body including a tantalum wire penetrating through at least a portion of each of the sintered tantalum body and the conductive polymer layer in a first direction. A ratio of an area of the first filler to an area of the conductive polymer layer is greater than 0.38 in a first cross-section partially overlapping the sintered tantalum body, among cross-sections perpendicular to the first direction.
    Type: Grant
    Filed: June 7, 2022
    Date of Patent: June 18, 2024
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Yong Hyun Lee, Jin Ho Hong, Hyun Sub Oh, Youn Soo Kim, Jae Bum Cho, Hee Sung Choi
  • Publication number: 20240106000
    Abstract: The present invention relates to an electrolyte composition for lithium metal batteries, comprising a) at least one fluorinated di-ether containing from 4 to 10 carbon atoms, represented by Formula (I) of R1—O—R2—O—R3, wherein each R1 and R3 is independently a fluorinated alkyl group, and R2 is an optionally fluorinated alkyl group, represented by Formula (II) of CaFbHc, wherein a is an integer from 1 to 6, b+c is an integer from 2 to 10, and if b is 0, R1 and R3 independently have no H; b) at least one non-fluorinated ether; and c) at least one lithium salt, wherein a) the fluorinated di-ether is in an amount of at least 50% by volume (vol %), based on the total volume of a) the fluorinated di-ether and b) the non-fluorinated ether. The present invention also relates to a lithium metal battery comprising a negative electrode comprising lithium metal; a positive electrode; a separator; and an electrolyte composition according to the present invention.
    Type: Application
    Filed: November 3, 2021
    Publication date: March 28, 2024
    Applicant: Solvay SA
    Inventors: Ji-Ae Choi, Vito Tortelli, Guillaume Müller, Lawrence Alan Hough, Marco Galimberti, So-Young Lee, Hee-Sung Choi
  • Patent number: 11942279
    Abstract: A tantalum capacitor includes a tantalum body comprising a tantalum sintered body containing tantalum powder, a conductive polymer layer disposed on the tantalum sintered body and including a first filler as a non-conductive particle, and a tantalum wire. The first filler includes a core including at least one metal oxide among BaTiO3, Al2O3, SiO2 and ZrO2, and a coating film disposed on a surface of the core.
    Type: Grant
    Filed: November 16, 2022
    Date of Patent: March 26, 2024
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Jin Ho Hong, Young Seuck Yoo, Hee Sung Choi, Young June Lee
  • Publication number: 20230238567
    Abstract: The present invention pertains to an anode-less lithium ion battery comprising a) a cathode comprising a cathode current collector and a cathode electro-active material on the cathode current collector; b) an anode current collector; c) a liquid electrolyte composition between the a) cathode and the b) anode current collector; and d) a separator, wherein the c) liquid electrolyte composition comprises i) at least 70% by volume (vol %) of a solvent mixture with respect to the total volume of the electrolyte composition, comprising at least one fluorinated ether compound and at least one non-fluorinated ether compound, and ii) at least one lithium salt.
    Type: Application
    Filed: March 18, 2021
    Publication date: July 27, 2023
    Applicant: Solvay SA
    Inventors: Ji-Ae Choi, Guillaume Müller, Lawrence Alan Hough, Hyun-Cheol Lee, Hee-Sung Choi, So-Young Lee
  • Publication number: 20230215663
    Abstract: A tantalum capacitor includes a tantalum body comprising a tantalum sintered body containing tantalum powder, a conductive polymer layer disposed on the tantalum sintered body and including a first filler as a non-conductive particle, and a tantalum wire. The first filler includes a core including at least one metal oxide among BaTiO3, Al2O3, SiO2 and ZrO2, and a coating film disposed on a surface of the core.
    Type: Application
    Filed: November 16, 2022
    Publication date: July 6, 2023
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Jin Ho HONG, Young Seuck YOO, Hee Sung CHOI, Young June LEE
  • Patent number: 11688554
    Abstract: A tantalum capacitor includes: first and second surfaces facing in a first direction, third and fourth surfaces facing in a second direction, and fifth and sixth surfaces facing in a third direction; a tantalum body having one surface through which a tantalum wire is exposed in the first direction; and a substrate on which the tantalum body is mounted, wherein the substrate may be an organic-inorganic composite substrate.
    Type: Grant
    Filed: March 1, 2021
    Date of Patent: June 27, 2023
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jin Ho Hong, Hyun Sub Oh, Youn Soo Kim, Hong Kyu Shin, Hee Sung Choi
  • Publication number: 20230140133
    Abstract: A tantalum capacitor includes a sintered tantalum body including tantalum powder, a conductive polymer layer disposed on the sintered tantalum body and including a first filler, a carbon layer disposed on the conductive polymer layer; and a tantalum body including a tantalum wire penetrating through at least a portion of each of the sintered tantalum body and the conductive polymer layer in a first direction. A ratio of an area of the first filler to an area of the conductive polymer layer is greater than 0.38 in a first cross-section partially overlapping the sintered tantalum body, among cross-sections perpendicular to the first direction.
    Type: Application
    Filed: June 7, 2022
    Publication date: May 4, 2023
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Yong Hyun Lee, Jin Ho Hong, Hyun Sub Oh, Youn Soo Kim, Jae Bum Cho, Hee Sung Choi
  • Patent number: 11532440
    Abstract: A tantalum capacitor includes a capacitor body comprising a tantalum body having a tantalum wire and a molded portion; an anodic terminal connected to the tantalum wire and disposed on the first surface of the capacitor body; an anodic connection portion connected to the anodic terminal and disposed on the fifth surface of the capacitor body; a cathodic terminal connected to the tantalum body and disposed on the second surface of the capacitor body; a cathodic connection portion connected to the cathodic terminal and spaced apart from the anodic connection portion on the fifth surface of the capacitor body; and a substrate disposed on the sixth surface of the body and on which the tantalum body is mounted, wherein the anodic terminal and the cathodic terminal are electrically isolated on the substrate.
    Type: Grant
    Filed: April 13, 2021
    Date of Patent: December 20, 2022
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Youn Soo Kim, Hee Sung Choi, Hyun Ho Shin, Hong Kyu Shin, Jae Jun Park
  • Publication number: 20220139634
    Abstract: A tantalum capacitor includes a capacitor body comprising a tantalum body having a tantalum wire and a molded portion; an anodic terminal connected to the tantalum wire and disposed on the first surface of the capacitor body; an anodic connection portion connected to the anodic terminal and disposed on the fifth surface of the capacitor body; a cathodic terminal connected to the tantalum body and disposed on the second surface of the capacitor body; a cathodic connection portion connected to the cathodic terminal and spaced apart from the anodic connection portion on the fifth surface of the capacitor body; and a substrate disposed on the sixth surface of the body and on which the tantalum body is mounted, wherein the anodic terminal and the cathodic terminal are electrically isolated on the substrate.
    Type: Application
    Filed: April 13, 2021
    Publication date: May 5, 2022
    Inventors: Youn Soo KIM, Hee Sung CHOI, Hyun Ho SHIN, Hong Kyu SHIN, Jae Jun PARK
  • Publication number: 20220093327
    Abstract: A tantalum capacitor includes: first and second surfaces facing in a first direction, third and fourth surfaces facing in a second direction, and fifth and sixth surfaces facing in a third direction; a tantalum body having one surface through which a tantalum wire is exposed in the first direction; and a substrate on which the tantalum body is mounted, wherein the substrate may be an organic-inorganic composite substrate.
    Type: Application
    Filed: March 1, 2021
    Publication date: March 24, 2022
    Inventors: Jin Ho Hong, Hyun Sub Oh, Youn Soo Kim, Hong Kyu Shin, Hee Sung Choi
  • Publication number: 20220013302
    Abstract: The present disclosure relates to a solid electrolytic capacitor, including a body comprising a tantalum wire disposed on one end thereof; a substrate, on which the body is disposed, comprising an insulating layer, first and second wiring layers respectively disposed on a first surface and a second surface, facing each other, of the insulating layer, and a via electrode penetrating the insulating layer to connect the first and second wiring layers to each other; and a connection portion connecting the tantalum wire to the first wiring layer.
    Type: Application
    Filed: November 11, 2020
    Publication date: January 13, 2022
    Inventors: Youn Soo KIM, Hyun Sub OH, Hee Sung CHOI, Hong Kyu SHIN, Jin Ho HONG, Yong Sam LEE, Jung Youn KIM, Ran Suk YANG
  • Patent number: 10199174
    Abstract: There is provided a tantalum capacitor including: a tantalum capacitor body; a plurality of tantalum wires and an adhesive layer on a lower surface of the tantalum capacitor body; and a molding part enclosing the tantalum capacitor body, wherein the tantalum wire and the adhesive layer are connected to an anode lead frame and a cathode lead frame, respectively.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: February 5, 2019
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Jae Bum Cho, Hong Kyu Shin, Hyun Sub Oh, Jeong Oh Hong, Hee Sung Choi, Wan Suk Yang
  • Patent number: 10147917
    Abstract: A secondary battery and a method of manufacturing the same are disclosed. In one aspect, the method includes preparing an electrode assembly comprising a positive electrode plate, a negative electrode plate, and a separator interposed therebetween. The method also includes freezing the electrode assembly after the electrode assembly is filled with an electrolyte solution, dipping the frozen electrode assembly in a liquid polymer material, retrieving the dipped electrode assembly from the liquid polymer material, and curing an external surface of the electrode assembly.
    Type: Grant
    Filed: March 16, 2015
    Date of Patent: December 4, 2018
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jee-Won Kang, Byong-Gon Lee, Ki-Soo Lee, Jake Kim, Maeng-Eun Lee, Jee-Hoon Han, Seon-Hong Lee, Jong-Man Kim, Young-Woong Kwon, Hee-Sung Choi
  • Patent number: 9972443
    Abstract: A tantalum capacitor includes a capacitor body containing tantalum powder, having a rectangular parallelepiped shape, and including a plurality of tantalum wires spaced apart from each other in a long axis direction of the rectangular parallelepiped shape and protruding from one side surface thereof perpendicular to the long axis direction; a conductive layer provided on one side surface of the capacitor body to be spaced apart from the tantalum wires; a sealing part enclosing the tantalum wires, the conductive layer, and the capacitor body and allowing end portions of the tantalum wires and a surface of the conductive layer to be exposed by the sealing part; an anode terminal provided on one side surface of the sealing part; and a cathode terminal provided on one side surface of the sealing part.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: May 15, 2018
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Jae Bum Cho, Hee Sung Choi, Hong Kyu Shin
  • Patent number: 9576741
    Abstract: The present invention relates to a solid electrolytic capacitor and a production method thereof. A solid electrolytic capacitor of the present invention includes: a capacitor element having an anode wire inserted in one side surface thereof; a cathode terminal disposed on one side under the capacitor element to be electrically connected to the capacitor element; an anode terminal disposed on the other side under the capacitor element and having a bending portion integrally formed to be inclined to the capacitor element for electrical connection with the anode wire; and a molding portion surrounding the outside of the capacitor element and formed to expose lower surfaces of the cathode terminal and the anode terminal.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: February 21, 2017
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Sung Ho Kwak, Hee Sung Choi, Hun Chol Jung, Yeong Su Cho, Sung Soo Cha, Hee Dong Myung, Jeong Oh Hong
  • Publication number: 20160217935
    Abstract: A tantalum capacitor includes a capacitor body containing tantalum powder, having a rectangular parallelepiped shape, and including a plurality of tantalum wires spaced apart from each other in a long axis direction of the rectangular parallelepiped shape and protruding from one side surface thereof perpendicular to the long axis direction; a conductive layer provided on one side surface of the capacitor body to be spaced apart from the tantalum wires; a sealing part enclosing the tantalum wires, the conductive layer, and the capacitor body and allowing end portions of the tantalum wires and a surface of the conductive layer to be exposed by the sealing part; an anode terminal provided on one side surface of the sealing part; and a cathode terminal provided on one side surface of the sealing part.
    Type: Application
    Filed: December 18, 2015
    Publication date: July 28, 2016
    Inventors: Jae Bum CHO, Hee Sung CHOI, Hong Kyu SHIN
  • Patent number: 9384899
    Abstract: A tantalum capacitor may include: a capacitor body containing a tantalum powder and having a tantalum wire exposed to one end surface thereof; a positive electrode lead frame including a positive electrode terminal part, a vertical support part vertically extended from one leading edge of the positive electrode terminal part, and a positive electrode connection part extended from the vertical support part toward the positive electrode terminal part and connected to the tantalum wire; a negative electrode lead frame having the capacitor body mounted on an upper surface thereof; and a molding part formed to allow a lower surface of the positive electrode terminal part of the positive electrode lead frame and a lower surface of the negative electrode lead frame to be exposed, while enclosing the capacitor body.
    Type: Grant
    Filed: March 4, 2014
    Date of Patent: July 5, 2016
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Sung Ho Kwak, Hun Chol Jung, Jeong Oh Hong, Sung Soo Cha, Hee Dong Myung, Hee Sung Choi
  • Publication number: 20160181021
    Abstract: A solid electrolyte capacitor includes a sintered body that is provided by sintering a molded body containing a mixture of metal powder and an inorganic additive. An anode lead wire is disposed to be partially inserted into the sintered body. The sintered body includes an air gap provided where the inorganic additive is removed after sintering of the molded body. A method of manufacturing the solid electrolyte capacitor is also provided.
    Type: Application
    Filed: September 30, 2015
    Publication date: June 23, 2016
    Inventors: Sung Ho KWAK, Hee Sung CHOI
  • Patent number: 9343712
    Abstract: A secondary battery is disclosed. In one aspect, the battery includes an electrode assembly including i) a positive electrode plate on which a positive active material is formed, ii) a negative electrode plate on which a negative active material is formed, and iii) a separator separating the positive and negative electrode plates. The battery also includes a can accommodating the electrode assembly, wherein the can has an inner surface facing the electrode assembly, an inner active material layer formed on the inner surface of the can and a securing layer covering the inner active material layer.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: May 17, 2016
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Young-Woong Kwon, Byong-Gon Lee, Maeng-Eun Lee, Jake Kim, Jee-Hoon Han, Seon-Hong Lee, Jong-Man Kim, Hee-Sung Choi