Patents by Inventor Seung-Taek Myung
Seung-Taek Myung 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: 11962001Abstract: Disclosed is a positive electrode material for a lithium secondary battery. The positive electrode material includes a positive electrode active material formed of Li—[Mn—Ti]-M-O-based material including a transition metal (M) to enable reversible intercalation and deintercalation of lithium and molybdenum oxide. The positive electrode active material is coated with the molybdenum oxide to form a coating layer on a surface thereof.Type: GrantFiled: October 6, 2021Date of Patent: April 16, 2024Assignees: Hyundai Motor Company, Kia Corporation, Industry Academy Cooperation Foundation of Sejong UniversityInventors: Seung Min Oh, Jun Ki Rhee, Yoon Sung Lee, Ji Eun Lee, Sung Ho Ban, Ko Eun Kim, Woo Young Jin, Sang Mok Park, Sang Hun Lee, Seung Taek Myung, Hee Jae Kim, Min Young Shin
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Patent number: 11824190Abstract: Disclosed are a cathode material for a lithium secondary battery and a method of manufacturing the same. For instance, the lithium secondary battery may have a high energy density by using only a single cathode material. Particularly, the cathode material for a lithium secondary battery includes a Li—[Mn—Ti]—Al—O-based cathode active material; and a carbon nanotube (CNT) attached to the surface of the cathode active material in an acid-treated state to be formed as a composite.Type: GrantFiled: July 14, 2020Date of Patent: November 21, 2023Assignees: Hyundai Motor Company, Kia Corporation, Industry Academy Cooperation Foundation of Sejong UniversityInventors: Seung Min Oh, Ik Kyu Kim, Yeol Mae Yeo, Sang Mok Park, Yoon Sung Lee, Nam Hyeong Kim, Ji Eun Lee, Dong Jun Kim, Seung Taek Myung, Ji Ung Choi
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Publication number: 20230352670Abstract: Disclosed are a cathode material for a lithium secondary battery, which improves air exposure stability while having high energy density with a single cathode material, and a method for manufacturing the cathode material. The cathode material includes a Li—[Mn—Ti]—Al—O-based cathode active material and a carbon coating layer including pitch carbon and coated on a surface of the cathode active material.Type: ApplicationFiled: October 26, 2022Publication date: November 2, 2023Inventors: Seung Min Oh, Sung Ho Ban, Sang Hun Lee, Yoon Sung Lee, Chang Hoon Song, Seung Taek Myung, Hee Jae Kim, Min Young Shin, Jun Ho Yu, Woo Young Jin
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Publication number: 20230282806Abstract: An anode for a zinc metal battery and a zinc metal battery using the same are provided. An anode for a zinc metal battery includes a zinc metal film and a protective layer formed on a surface of the zinc metal film, and the protective layer may be zinc phosphate. Since the protective layer coats the outermost surface of the zinc metal film, direct contact of the zinc metal film with an electrolyte can be prevented. Accordingly, zinc dendrites formed during plating/stripping of zinc ions during charging and discharging of the battery may grow uniformly, and thus, short circuit of the battery may be prevented.Type: ApplicationFiled: March 1, 2023Publication date: September 7, 2023Applicant: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITYInventors: Seung Taek MYUNG, Hee Jae Kim, Sun Kim
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Publication number: 20230187703Abstract: Provided are an electrolyte for a manganese ion battery and a manganese ion battery using the same. In the electrolyte for a manganese ion battery, manganese salt is dissolved in an organic solvent and dissociated into manganese ions and anions, and manganese ions are used as a charge transfer material in the electrolyte to enable charging and discharging of the manganese ion battery. The electrolyte for a manganese ion battery uses manganese ions as a charge transport material and thus has good compatibility with manganese metal used as a negative electrode. In addition, the manganese ion battery to which the electrolyte is applied can use manganese metal, which is significantly cheaper than lithium metal and has a lower reactivity than lithium metal, as a negative electrode, so there are fewer side reactions during battery operation.Type: ApplicationFiled: November 21, 2022Publication date: June 15, 2023Applicant: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITYInventors: Seung Taek MYUNG, Hee Jae KIM
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Publication number: 20220344640Abstract: Disclosed herein is a positive electrode material for a lithium (Li) secondary battery. The positive electrode material includes a positive electrode active material including Li—[Mn—Ti]-M—O containing transition metal M to allow reversible intercalation and reversible deintercalation of Li, and the positive electrode active material is coated with Li3PO4 to form a coating layer on a surface thereof.Type: ApplicationFiled: November 22, 2021Publication date: October 27, 2022Inventors: Sung Ho Ban, Ji Eun Lee, Sang Hun Lee, Seung Min Oh, Woo Young Jin, Seung Taek Myung, Hee Jae Kim, Min Young Shin
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Publication number: 20220310990Abstract: Disclosed is a positive electrode material for a lithium secondary battery. The positive electrode material includes a positive electrode active material formed of Li—[Mn—Ti]-M-O-based material including a transition metal (M) to enable reversible intercalation and deintercalation of lithium and molybdenum oxide.Type: ApplicationFiled: October 6, 2021Publication date: September 29, 2022Inventors: Seung Min Oh, Jun Ki Rhee, Yoon Sung Lee, Ji Eun Lee, Sung Ho Ban, Ko Eun Kim, Woo Young Jin, Sang Mok Park, Sang Hun Lee, Seung Taek Myung, Hee Jae Kim, Min Young Shin
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Publication number: 20220149364Abstract: Disclosed herein is a positive electrode material for a lithium secondary battery, which has a high energy density with only a single positive electrode material, and a lithium secondary battery including the same. A positive electrode active material is made of Li—[Mn—Ti]—O-based material and doped with Al.Type: ApplicationFiled: June 4, 2021Publication date: May 12, 2022Inventors: Seung Min Oh, Yoon Sung Lee, Ji Eun Lee, Sang Mok Park, Sung Ho Ban, Woo Young Jin, Sang Hun Lee, Seung Taek Myung, Ji Ung Choi
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Publication number: 20210399296Abstract: Provided is a lithium secondary battery with improved t electrochemical characteristics through improvement of the structural stability by including a cathode active material doped with molybdenum (Mo). The lithium secondary battery includes a cathode; an anode; a separator positioned between the cathode and the anode; and an electrolyte. In particular, the cathode active material includes molybdenum (Mo) doped on a composite oxide of lithium and metal including manganese (Mn) and titanium (Ti).Type: ApplicationFiled: September 1, 2021Publication date: December 23, 2021Inventors: Seung-Min Oh, KiSeok Koh, Yeol Mae Yeo, Dongjun Kim, Yoon Sung Lee, Jieun Lee, Sa Heum Kim, Seung Taek Myung
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Patent number: 11139475Abstract: Provided is a lithium secondary battery with improved t electrochemical characteristics through improvement of the structural stability by including a cathode active material doped with molybdenum (Mo). The lithium secondary battery includes a cathode; an anode; a separator positioned between the cathode and the anode; and an electrolyte. In particular, the cathode active material includes molybdenum (Mo) doped on a composite oxide of lithium and metal including manganese (Mn) and titanium (Ti).Type: GrantFiled: April 22, 2019Date of Patent: October 5, 2021Assignees: Hyundai Motor Company, Kia Motors Corporation, Industry Academy Cooperation Foundation of Sejong UniversityInventors: Seung-Min Oh, KiSeok Koh, Yeolmae Yeo, Dongjun Kim, Yoon Sung Lee, Jieun Lee, Sa Heum Kim, Seung-Taek Myung
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Patent number: 11101459Abstract: Disclosed is a zinc ion secondary battery. More particularly, the zinc ion secondary battery includes a first electrode; a second electrode; and an electrolyte disposed between the first electrode and the second electrode, wherein an active material included in the first electrode is an alkali metal-vanadium oxide/graphene oxide composite, wherein the alkali metal-vanadium oxide has a layered structure in which alkali metal layers and vanadium oxide layers are alternately stacked. Accordingly, a zinc ion battery system including the K2V3O8/a graphene oxide composite as an electrode active material can exhibit excellent rechargeability and have a high discharge capacity and an excellent capacity retention rate.Type: GrantFiled: December 17, 2018Date of Patent: August 24, 2021Assignee: INDUSTRY-ACADEMIA COOPERATION GROUP OF SEJONG UNIVERSITYInventors: Seung Taek Myung, Jae Hyeon Jo, Hee Jae Kim
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Patent number: 11043702Abstract: Disclosed is a zinc ion secondary battery including an aqueous electrolyte. More particularly, the zinc ion secondary battery includes a positive electrode comprising a positive electrode active material; a negative electrode comprising a negative electrode active material; and an aqueous electrolyte disposed between the positive electrode and the negative electrode and containing an aqueous solvent and a metal salt, wherein the metal salt has a composition represented by Formula 1 below: A-xZn.yM??[Formula 1] wherein A is an aminopolycarboxylate, x is 1 to 2, y is 0 to 3, and M is an alkali metal.Type: GrantFiled: December 17, 2018Date of Patent: June 22, 2021Assignee: INDUSTRY-ACADEMIA COOPERATION GROUP OF SEJONG UNIVERSITYInventors: Seung Taek Myung, Jae Hyeon Jo
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Publication number: 20210184206Abstract: Disclosed are an anode material for a lithium secondary battery and a method of manufacturing the same. For instance, the lithium secondary batter may have a high energy density by using only a single anode material. Particularly, the anode material for a lithium secondary battery includes a Li—[Mn—Ti]—Al—O-based anode active material; and a carbon nanotube (CNT) attached to the surface of the anode active material in an acid-treated state to be formed as a composite.Type: ApplicationFiled: July 14, 2020Publication date: June 17, 2021Inventors: Seung Min Oh, Ik Kyu Kim, Yeol Mae Yeo, Sang Mok Park, Yoon Sung Lee, Nam Hyeong Kim, Ji Eun Lee, Dong Jun Kim, Seung Taek Myung, Ji Ung Choi
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Publication number: 20210184211Abstract: Provided are, inter alia, a positive electrode material for a lithium secondary battery having a high energy density with only a single positive electrode material, and a lithium secondary battery including the same. The positive electrode material for a lithium secondary battery includes a positive electrode active material formed of a Li—[Mn—Ti]—O-based material so that lithium is reversibly intercalated and deintercalated, and particularly, the positive electrode active material is doped with a dopant (Me) having an oxidation number of 2 to 6.Type: ApplicationFiled: May 26, 2020Publication date: June 17, 2021Inventors: Seung Min Oh, Sang Mok Park, Ik Kyu Kim, Yeol Mae Yeo, Yoon Sung Lee, Dong Jun Kim, Sa Heum Kim, Ji Eun Lee, Seung Taek Myung, Ji Ung Choi
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Publication number: 20200168905Abstract: Provided is a lithium secondary battery with improved t electrochemical characteristics through improvement of the structural stability by including a cathode active material doped with molybdenum (Mo). The lithium secondary battery includes a cathode; an anode; a separator positioned between the cathode and the anode; and an electrolyte. In particular, the cathode active material includes molybdenum (Mo) doped on a composite oxide of lithium and metal including manganese (Mn) and titanium (Ti).Type: ApplicationFiled: April 22, 2019Publication date: May 28, 2020Inventors: Seung-Min Oh, KiSeok Koh, Yeolmae Yeo, Dongjun Kim, Yoon Sung Lee, Jieun Lee, Sa Heum Kim, Seung-Taek Myung
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Publication number: 20200099105Abstract: Disclosed is a zinc ion secondary battery including an aqueous electrolyte. More particularly, the zinc ion secondary battery includes a positive electrode comprising a positive electrode active material; a negative electrode comprising a negative electrode active material; and an aqueous electrolyte disposed between the positive electrode and the negative electrode and containing an aqueous solvent and a metal salt, wherein the metal salt has a composition represented by Formula 1 below: A-xZn.yM??[Formula 1] wherein A is an aminopolycarboxylate, x is 1 to 2, y is 0 to 3, and M is an alkali metal.Type: ApplicationFiled: December 17, 2018Publication date: March 26, 2020Applicant: INDUSTRY-ACADEMIA COOPERATION GROUP OF SEJONG UNIVERSITYInventors: Seung Taek MYUNG, Jae Hyeon JO
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Publication number: 20200091504Abstract: Disclosed is a zinc ion secondary battery. More particularly, the zinc ion secondary battery includes a first electrode; a second electrode; and an electrolyte disposed between the first electrode and the second electrode, wherein an active material included in the first electrode is an alkali metal-vanadium oxide/graphene oxide composite, wherein the alkali metal-vanadium oxide has a layered structure in which alkali metal layers and vanadium oxide layers are alternately laminated. Accordingly, a zinc ion battery system including the K2V3O8/a graphene oxide composite as an electrode active material can exhibit excellent rechargeability and have a high discharge capacity and an excellent capacity retention rate.Type: ApplicationFiled: December 17, 2018Publication date: March 19, 2020Applicant: INDUSTRY-ACADEMIA COOPERATION GROUP OF SEJONG UNIVERSITYInventors: Seung Taek MYUNG, Jae Hyeon JO, Hee Jae KIM
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Patent number: 8865018Abstract: An anode active-material for rechargeable lithium batteries and methods of manufacturing the same. This includes preparing an anode active-material for rechargeable lithium batteries, including heat-treating a mixture of Li2CO3, MnO2, MgO, Al2O3 and Co3O4 at 900-1000° C. in air or oxygen for 10-48 hours, generating a lithium-containing oxide; generating metal-oxide nanoparticles MO (5-500 nm) (M represents Mg, Co or Ni, with a valence of 2); and dry or wet mixing 0.01-10 wt % of pulverized metal oxide nanoparticles with the lithium-containing oxide to form an anode active-material. Spinel type MgAl2O4 is substituted into a basic spinel-structure (Li1.1Mn1.9O4) for structural stability. Spinel type Co3O4 is substituted to improve electronic conductivity, improving battery performance.Type: GrantFiled: November 4, 2010Date of Patent: October 21, 2014Inventors: Jae Won Jo, Seung-Taek Myung
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Publication number: 20140093779Abstract: An object of the present invention is to provide a negative-electrode active material for lithium-ion secondary battery, negative-electrode active material which makes it possible for lithium-ion secondary batteries to exhibit higher capacities, and which makes it feasible to charge and discharge lithium-ion secondary batteries at a faster speed. In a production process according to the present invention, oxidized titanium fluoride is obtained by heating a mixed raw material, which includes a mixture of anatase-type TiO2 and hydrofluoric acid, at 70° C. or more (i.e., a heating step). This mixed raw material includes hydrogen fluoride in an amount exceeding 2 mol per the anatase-type TiO2 making 1 mol. When the oxidized titanium fluoride, which is obtained by this production process, is used as a negative-electrode active material of lithium-ion secondary battery, high-capacity and rapidly-chargeable/dischargeable lithium-ion secondary batteries are obtainable.Type: ApplicationFiled: November 5, 2013Publication date: April 3, 2014Applicants: Incorporated National University Iwate University, Kabushiki Kaisha Toyota JidoshokkiInventors: Seung-Taek MYUNG, Naoto YASUDA, Hitotoshi MURASE
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Publication number: 20120228562Abstract: An anode active-material for rechargeable lithium batteries and methods of manufacturing the same. This includes preparing an anode active-material for rechargeable lithium batteries, including heat-treating a mixture of Li2CO3, MnO2, MgO, Al2O3 and Co3O4 at 900-1000° C. in air or oxygen for 10-48 hours, generating a lithium-containing oxide; generating metal-oxide nanoparticles MO (5-500 nm) (M represents Mg, Co or Ni, with a valence of 2); and dry or wet mixing 0.01-10 wt % of pulverized metal oxide nanoparticles with the lithium-containing oxide to form an anode active-material. Spinel type MgAl2O4 is substituted into a basic spinel-structure (Li1.1Mn1.9O4) for structural stability. Spinel type Co3O4 is substituted to improve electronic conductivity, improving battery performance.Type: ApplicationFiled: November 4, 2010Publication date: September 13, 2012Inventors: Jae Won Jo, Seung-Taek Myung