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).
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Patent number: 12095389Abstract: 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: GrantFiled: July 26, 2019Date of Patent: September 17, 2024Assignees: 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
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Patent number: 12014883Abstract: 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: GrantFiled: June 7, 2022Date of Patent: June 18, 2024Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Yong Hyun Lee, Jin Ho Hong, Hyun Sub Oh, Youn Soo Kim, Jae Bum Cho, Hee Sung Choi
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Publication number: 20240106000Abstract: 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: ApplicationFiled: November 3, 2021Publication date: March 28, 2024Applicant: Solvay SAInventors: Ji-Ae Choi, Vito Tortelli, Guillaume Müller, Lawrence Alan Hough, Marco Galimberti, So-Young Lee, Hee-Sung Choi
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Patent number: 11942279Abstract: 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: GrantFiled: November 16, 2022Date of Patent: March 26, 2024Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Jin Ho Hong, Young Seuck Yoo, Hee Sung Choi, Young June Lee
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Publication number: 20230238567Abstract: 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: ApplicationFiled: March 18, 2021Publication date: July 27, 2023Applicant: Solvay SAInventors: Ji-Ae Choi, Guillaume Müller, Lawrence Alan Hough, Hyun-Cheol Lee, Hee-Sung Choi, So-Young Lee
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Publication number: 20230215663Abstract: 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: ApplicationFiled: November 16, 2022Publication date: July 6, 2023Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Jin Ho HONG, Young Seuck YOO, Hee Sung CHOI, Young June LEE
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Patent number: 11688554Abstract: 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: GrantFiled: March 1, 2021Date of Patent: June 27, 2023Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Jin Ho Hong, Hyun Sub Oh, Youn Soo Kim, Hong Kyu Shin, Hee Sung Choi
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Publication number: 20230140133Abstract: 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: ApplicationFiled: June 7, 2022Publication date: May 4, 2023Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Yong Hyun Lee, Jin Ho Hong, Hyun Sub Oh, Youn Soo Kim, Jae Bum Cho, Hee Sung Choi
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Patent number: 11532440Abstract: 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: GrantFiled: April 13, 2021Date of Patent: December 20, 2022Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Youn Soo Kim, Hee Sung Choi, Hyun Ho Shin, Hong Kyu Shin, Jae Jun Park
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Publication number: 20220139634Abstract: 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: ApplicationFiled: April 13, 2021Publication date: May 5, 2022Inventors: Youn Soo KIM, Hee Sung CHOI, Hyun Ho SHIN, Hong Kyu SHIN, Jae Jun PARK
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Publication number: 20220093327Abstract: 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: ApplicationFiled: March 1, 2021Publication date: March 24, 2022Inventors: Jin Ho Hong, Hyun Sub Oh, Youn Soo Kim, Hong Kyu Shin, Hee Sung Choi
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Publication number: 20220013302Abstract: 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: ApplicationFiled: November 11, 2020Publication date: January 13, 2022Inventors: Youn Soo KIM, Hyun Sub OH, Hee Sung CHOI, Hong Kyu SHIN, Jin Ho HONG, Yong Sam LEE, Jung Youn KIM, Ran Suk YANG
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Patent number: 10199174Abstract: 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: GrantFiled: March 25, 2015Date of Patent: February 5, 2019Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Jae Bum Cho, Hong Kyu Shin, Hyun Sub Oh, Jeong Oh Hong, Hee Sung Choi, Wan Suk Yang
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Patent number: 10147917Abstract: 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: GrantFiled: March 16, 2015Date of Patent: December 4, 2018Assignee: 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
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Patent number: 9972443Abstract: 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: GrantFiled: December 18, 2015Date of Patent: May 15, 2018Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Jae Bum Cho, Hee Sung Choi, Hong Kyu Shin
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Patent number: 9576741Abstract: 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: GrantFiled: September 15, 2014Date of Patent: February 21, 2017Assignee: 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
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Publication number: 20160217935Abstract: 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: ApplicationFiled: December 18, 2015Publication date: July 28, 2016Inventors: Jae Bum CHO, Hee Sung CHOI, Hong Kyu SHIN
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Patent number: 9384899Abstract: 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: GrantFiled: March 4, 2014Date of Patent: July 5, 2016Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Sung Ho Kwak, Hun Chol Jung, Jeong Oh Hong, Sung Soo Cha, Hee Dong Myung, Hee Sung Choi
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Publication number: 20160181021Abstract: 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: ApplicationFiled: September 30, 2015Publication date: June 23, 2016Inventors: Sung Ho KWAK, Hee Sung CHOI
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Patent number: 9343712Abstract: 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: GrantFiled: December 12, 2013Date of Patent: May 17, 2016Assignee: 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