Patents by Inventor Minchul Jang
Minchul 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).
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Patent number: 11431019Abstract: A lithium secondary battery which is made of an anode-free battery and comprises lithium metal formed on a negative electrode current collector by charging. The lithium secondary battery comprises the lithium metal formed in a state of being shielded from the atmosphere, so that the generation of a surface oxide layer (native layer) formed on the negative electrode according to the prior art does not occur fundamentally, thereby preventing the deterioration of the efficiency and life characteristics of the battery.Type: GrantFiled: June 26, 2018Date of Patent: August 30, 2022Assignee: LG ENERGY SOLUTION, LTD.Inventors: Eunkyung Park, Minchul Jang, Changhun Park, Doyeon Kim, Bora Jung
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Publication number: 20220231290Abstract: Provided is an irreversible additive contained in a cathode material for a secondary battery, wherein the irreversible additive is an oxide represented by the following Chemical Formula 1, and wherein the oxide has a trigonal crystal structure, a cathode material including the same, and a secondary battery including the cathode material, Li2+aNi1?bMbO2+c ??(1) in Chemical Formula 1, ?0.2?a?0.2, 0?b?0.5, 0?c?0.2, and M is one or more elements selected from the group consisting of Cu, Mg, Pt, Al, Co, P, and B.Type: ApplicationFiled: August 18, 2020Publication date: July 21, 2022Applicant: LG Energy Solution, Ltd.Inventors: Sung Chul Lim, Minchul Jang, Insung Uhm, Hee Chang Youn
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Publication number: 20220231291Abstract: Provided is an irreversible additive contained in a cathode material for a secondary battery, wherein the irreversible additive being an oxide represented by the following Chemical Formula 1, and wherein the oxide has a monoclinic crystal structure, a cathode material including the same, and a secondary battery including the cathode material: Li2+aCu1?bMbO2+c??(1) in Formula 1, ?0.2?a?0.2, 0?b<0.5, 0?c?0.2, and M is one or more elements selected from the group consisting of Ni, Mg, Pt, Al, Co, P, and B.Type: ApplicationFiled: August 18, 2020Publication date: July 21, 2022Applicant: LG Energy Solution, Ltd.Inventors: Sung Chul Lim, Minchul Jang, Insung Uhm, Junghun Choi, Hee Chang Youn, Yonghee Kang
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Patent number: 11380888Abstract: An electrode and a lithium secondary battery including the same. By preparing an electrode including an electrode active layer formed using a structure capable of supporting an electrode active material, safety and charge and discharge properties of a battery are improved due to morphological characteristics of the electrode active material being supported inside the structure.Type: GrantFiled: March 28, 2019Date of Patent: July 5, 2022Assignees: LG ENERGY SOLUTION, LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Byoungkuk Son, Jang Wook Choi, Byung Gon Kim, Minchul Jang, Eunkyung Park, Junghun Choi, Donghyeon Kang
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Patent number: 11349112Abstract: A method for preparing a hollow structure, and more particularly, to a method for preparing a hollow structure having various stable structures by using polystyrene particles, into which a functional group is introduced, as a template for preparing the hollow structure.Type: GrantFiled: August 28, 2018Date of Patent: May 31, 2022Assignee: LG ENERGY SOLUTION, LTD.Inventors: Jongwook Jung, Se Ho Park, Minchul Jang, Gyo Hyun Hwang, Eunkyung Park, Changhun Park
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Publication number: 20220149350Abstract: Provided is a positive electrode for secondary battery including: a first positive electrode mixture layer formed on at least one surface of a positive electrode current collector and including a first positive electrode active material; and a second positive electrode mixture layer formed on the first positive electrode mixture layer and including a second positive electrode active material wherein the first positive electrode active material and the second positive electrode active material include a lithium nickel-based transition metal oxide represented by the following Chemical Formula 1, and wherein the first positive electrode mixture layer contains a flake graphite as an additive. LiaNi1-bMbO2-xAx??(1) in the above formula, M is at least one selected from the group consisting of Ti, Mg, Al, Zr, Mn and Co, A is an oxygen-substituted halogen, 1.00?a?1.05, 0<b?0.2, and 0?x?0.01.Type: ApplicationFiled: November 25, 2020Publication date: May 12, 2022Applicant: LG Energy Solution, Ltd.Inventors: Byounghyo Jung, Ilhong Kim, Minchul Jang, Insung Uhm
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Patent number: 11322731Abstract: A lithium secondary battery which is made of an anode-free battery and includes lithium metal formed on a negative electrode current collector by charging. The lithium secondary battery includes the lithium metal formed on the negative electrode current collector in a state of being shielded from the atmosphere, so that the generation of a surface oxide layer (native layer) formed on the negative electrode according to the prior art does not occur fundamentally, thereby preventing the deterioration of the efficiency and life characteristics of the battery.Type: GrantFiled: June 21, 2018Date of Patent: May 3, 2022Assignee: LG ENERGY SOLUTION, LTD.Inventors: Eunkyung Park, Minchul Jang, Suk Il Youn, Byoungkuk Son, Junghun Choi, Bora Jung
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Patent number: 11322777Abstract: The present invention relates to a lithium secondary battery, and in particular, to a lithium secondary battery including a positive electrode, a negative electrode, and a separator and an electrolyte interposed between the positive electrode and the negative electrode, wherein a gel polymer electrolyte is included between the negative electrode and the separator, and a liquid electrolyte is included between the positive electrode and the separator. The lithium secondary battery according to the present invention uses a different electrolyte in each of a positive electrode and a negative electrode improving stability and performance of the electrodes, and as a result, performance and a life time of the lithium secondary battery may be enhanced.Type: GrantFiled: September 28, 2017Date of Patent: May 3, 2022Assignee: LG ENERGY SOLUTION, LTD.Inventors: Changhun Park, Minchul Jang, Byoungkuk Son, Eunkyung Park, Junghun Choi
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Publication number: 20220052421Abstract: The present invention relates to a porous separator comprising a porous layer containing a plurality of plate-type inorganic particles and a first binder polymer positioned on part or all of the surface of the plate-type inorganic particles to connect and fix between the plate-type inorganic particles; and a metal layer formed on any one surface of the porous layer, and a lithium secondary battery comprising the same.Type: ApplicationFiled: October 11, 2019Publication date: February 17, 2022Applicant: LG CHEM, LTD.Inventors: Woongchul CHOI, Junghun CHOI, Yonghee KANG, Minchul JANG, Suk Il YOUN, Byoungkuk SON
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Patent number: 11251438Abstract: A structure, and more specifically a tube-shaped structure having an inner surface and two ends, wherein one or both ends are open and the inner surface is exposed through said one or both open ends, and a metal provide on the inner surface. Also, an electrode active material, such as lithium metal, on the metal included on the inner surface of the tube.Type: GrantFiled: February 6, 2019Date of Patent: February 15, 2022Assignees: LG ENERGY SOLUTION, LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Eunkyung Park, Jang Wook Choi, Byung Gon Kim, Minchul Jang, Byoungkuk Son, Junghun Choi, Donghyeon Kang
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Publication number: 20210399276Abstract: The present invention relates to a lithium secondary battery manufactured by forming a negative electrode free battery and then forming a lithium metal on the negative electrode current collector by charging. In the lithium secondary battery, since lithium metal is formed on the negative electrode current collector in the state of being blocked with the atmosphere, the generation of the conventional surface oxide layer (native layer) formed on the negative electrode does not occur inherently, thereby preventing the reduction of the efficiency and lifetime characteristics of the battery.Type: ApplicationFiled: November 1, 2019Publication date: December 23, 2021Applicant: LG ENERGY SOLUTION, LTD.Inventors: Insung UHM, Sin Young PARK, Taegon KIM, Minchul JANG, Wang Mo JUNG, Boram LEE, Byoungkuk SON, Eunkyung PARK, Seongmin HA
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Publication number: 20210336274Abstract: A lithium secondary battery including a negative electrode in which a negative electrode mixture included in the negative electrode is formed by charge and discharge of the battery. This negative electrode is formed by charge-induced formation of lithium metal on a negative electrode current collector having a three-dimensional structure form. The lithium secondary battery forms lithium metal while being blocked from the atmosphere. Therefore, formation of a surface oxide layer (native oxide layer) on a negative electrode is blocked and a lithium dendrite growth suppressing effect is achieved by forming lithium metal on a negative electrode current collector having a three-dimensional structure form. The lithium secondary battery has a superior battery efficiency and reduces declines in lifetime properties.Type: ApplicationFiled: August 28, 2018Publication date: October 28, 2021Applicant: LG CHEM, LTD.Inventors: Bora JUNG, Eunkyung PARK, Minchul JANG, Byoungkuk SON, Changhun PARK, Doyeon KIM
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Patent number: 11152601Abstract: A method for manufacturing a lithium electrode, more particularly, a method for manufacturing a lithium electrode having a thin and uniform thickness by, when manufacturing the lithium electrode, first forming a protective layer capable of protecting lithium metal on the surface treated substrate with a plasma and corona process, and depositing lithium metal on the protective layer and then transferring the deposited lithium metal layer to a current collector. The energy density of the lithium secondary battery manufactured using the lithium electrode thus manufactured can be improved.Type: GrantFiled: July 4, 2018Date of Patent: October 19, 2021Assignee: LG CHEM, LTD.Inventors: Suk Il Youn, Byoungkuk Son, Junghun Choi, Minchul Jang
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Publication number: 20210288349Abstract: A lithium secondary battery, in which, by using different electrolytes in a positive electrode and a negative electrode, and using a gel polymer electrolyte, in which a small amount of an electrolyte liquid is impregnated into a polymer matrix, between the negative electrode and the separator, the stability and performance of the electrode may be improved, and therefore, the performance and lifetime of the lithium secondary battery may be enhanced.Type: ApplicationFiled: February 14, 2018Publication date: September 16, 2021Applicant: LG CHEM, LTD.Inventors: Byoungkuk SON, Minchul JANG, Eunkyung PARK, Junghun CHOI, Changhun PARK
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Publication number: 20210273217Abstract: A negative electrode for a lithium secondary battery including a lithium metal layer and a protective layer including a three-dimensional structural body made of metal and lithium nitride on the lithium metal layer. The protective layer induces uniform ionic conductivity and electrical conductivity on the surface of the negative electrode. A method for manufacturing method a negative electrode for a lithium secondary battery including the steps of forming a metal hydroxide having a three-dimensional structure, forming a metal nitride having a three-dimensional structure by a nitridation reaction of the metal hydroxide of the three-dimensional structure; and transferring the metal nitride having the three-dimensional structure onto a lithium metal layer to form a protective layer. A lithium secondary battery including the negative electrode for a lithium secondary battery.Type: ApplicationFiled: March 5, 2020Publication date: September 2, 2021Applicants: LG CHEM, LTD., IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)Inventors: Eunkyung PARK, Minchul JANG, Taeseup SONG, Seho SUN, Dongsoo LEE, Byoungkuk SON
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Publication number: 20210273262Abstract: A lithium secondary battery including a positive electrode, a negative electrode comprising a negative electrode current collector, and an electrolyte interposed between the positive electrode and negative electrode. The lithium metal is formed on the negative electrode current collector by lithium ions migrating toward the negative electrode current collector after charge. The electrolyte comprises a sacrificial salt having an oxidation potential of 5 V or less with respect to lithium. The lithium secondary battery forms lithium metal while being blocked from the atmosphere, and thereby improves an existing problem caused by high reactivity of lithium metal. By including a sacrificial salt in an electrolyte, lithium consumption caused by an irreversible reaction of a negative electrode is reduced, which may prevent decline in the battery capacity and lifetime properties.Type: ApplicationFiled: October 30, 2019Publication date: September 2, 2021Applicant: LG CHEM, LTD.Inventors: Insung UHM, Yohan KWON, Eunkyung PARK, Jae Hyun LEE, Minchul JANG, Byoungkuk SON, Seongmin HA
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Patent number: 11108039Abstract: A negative electrode including an electrode protective material and a lithium secondary battery including the negative electrode, wherein the negative electrode containing the protective material can inhibit the growth of lithium dendrite on the surface of the electrode, effectively transfer lithium ions to the lithium metal electrode and has an excellent ion conductivity, and thus the protective layer itself including the protective material does not act as a resistive layer, overvoltage is not applied during charging and discharging, thereby preventing degradation of the performance of the battery and ensuring stability when driving the battery.Type: GrantFiled: May 30, 2018Date of Patent: August 31, 2021Assignee: LG CHEM, LTD.Inventors: Chanyeup Chung, Minchul Jang, Kyoung Hoon Kim, Youngcheol Choi, Byoungkuk Son, Junghun Choi
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Patent number: 11063290Abstract: A lithium secondary battery prepared to a negative electrode free battery, and forming lithium metal on a negative electrode current collector through charge. The lithium secondary battery forms lithium metal while being blocked from the atmosphere, and since production of a surface oxide layer (native layer) formed on an existing negative electrode is fundamentally blocked, resulting battery efficiency and lifetime property decline may be prevented.Type: GrantFiled: June 21, 2018Date of Patent: July 13, 2021Assignee: LG CHEM, LTD.Inventors: Eunkyung Park, Minchul Jang, Byoungkuk Son, Junghun Choi, Donghyeon Kang, Bora Jung
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Publication number: 20210104748Abstract: A lithium secondary battery comprising a positive electrode, a negative electrode, a lithium metal layer, and an electrolyte disposed between the positive electrode and the negative electrode. The negative electrode comprises a first protective layer formed on a negative electrode current collector, a second protective layer formed on the first protective layer opposite the negative electrode current collector, and a third protective layer formed inside and on one surface of the second protective layer opposite the first protective layer, and wherein the lithium metal layer is formed between the negative electrode current collector and the first protective layer in the negative electrode when lithium ions migrate from the positive electrode after charging.Type: ApplicationFiled: October 31, 2019Publication date: April 8, 2021Applicant: LG CHEM, LTD.Inventors: Eunkyung PARK, Minchul JANG, Bora JUNG, Byoungkuk SON
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Patent number: 10971754Abstract: A method for preparing a negative electrode active material, a negative electrode active material prepared using the same, and a lithium secondary battery, and in particular, to a method for preparing a negative electrode active material including the steps of (a) preparing a coating composition including a precursor of metal-phosphorus-oxynitride; (b) forming a precursor layer on a negative electrode active material with the coating composition of (a) using a solution process; and (c) forming a metal-phosphorus-oxynitride protective layer on the negative electrode active material by heat treating the negative electrode active material having the precursor layer formed thereon. The method for preparing a negative electrode active material uses a solution process, which is advantageous in terms of simplifying the whole process and reducing costs, and high capacity, high stabilization and long lifetime are obtained as well by the formed protective layer having excellent properties.Type: GrantFiled: August 28, 2018Date of Patent: April 6, 2021Assignees: LG CHEM, LTD., CHUNG ANG UNIVERSITY INDUSTRY ACADEMIC COOPERATION FOUNDATIONInventors: Da Young Sung, Myung Gil Kim, Minchul Jang, Hyewon Hwang