Patents by Inventor Gi Beom Han

Gi Beom Han 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: 20220246928
    Abstract: A surface of a LiCoO2-based positive electrode active material to have a rock salt crystal structure is provided. Specifically, a positive electrode active material for a lithium rechargeable battery is provided, including: a core particle containing lithium cobalt oxide doped with aluminum (Al); and a coating layer positioned on a surface of the core particle and containing a cobalt (Co)-based compound having a rock salt crystal structure. A method of producing the positive electrode active material is also provided using a solid-phase method. The positive electrode active material can be applied to a positive electrode, lithium rechargeable battery, battery module, battery pack, and the like.
    Type: Application
    Filed: April 13, 2022
    Publication date: August 4, 2022
    Applicant: LG Chem, Ltd.
    Inventors: Chi Ho Jo, Hyuck Hur, Seul Ki Kim, Wang Mo Jung, Gi Beom Han
  • Publication number: 20220246929
    Abstract: A surface of a LiCoO2-based positive electrode active material to have a rock salt crystal structure is provided. Specifically, a positive electrode active material for a lithium rechargeable battery is provided, including: a core particle containing lithium cobalt oxide doped with aluminum (Al); and a coating layer positioned on a surface of the core particle and containing a cobalt (Co)-based compound having a rock salt crystal structure. A method of producing the positive electrode active material is also provided using a solid-phase method. The positive electrode active material can be applied to a positive electrode, lithium rechargeable battery, battery module, battery pack, and the like.
    Type: Application
    Filed: April 13, 2022
    Publication date: August 4, 2022
    Applicant: LG Chem, Ltd.
    Inventors: Chi Ho Jo, Hyuck Hur, Seul Ki Kim, Wang Mo Jung, Gi Beom Han
  • Publication number: 20220223861
    Abstract: A positive electrode for a secondary battery in which a positive electrode mixture including a positive electrode active material is formed on at least one surface of a current collector is provided. The positive electrode includes a lithium by-product so as to satisfy the following Equation 1 based on the total weight of the positive electrode mixture. 4000 A - 2000 ? B ? ( ppm ) [ Equation ? ? 1 ] wherein in the Equation 1, A is the molar content of Ni when the total mole of transition metal contained in the positive electrode active material is 1, and B is the content of lithium by-product, when A is 0.5 or less, the minimum value of B is 6000 ppm. The positive electrode also has a harness at which cracks occur in a measuring rod of 2 pi (Ø) or more.
    Type: Application
    Filed: December 23, 2020
    Publication date: July 14, 2022
    Applicant: LG Energy Solution, Ltd.
    Inventors: Hakyoon Kim, Gi Beom Han, Sang Wook Lee, Sora Baek, Jungmin Han, Wang Mo Jung
  • Patent number: 11342557
    Abstract: A surface of a LiCoO2-based positive electrode active material to have a rock salt crystal structure is provided. Specifically, a positive electrode active material for a lithium rechargeable battery is provided, including: a core particle containing lithium cobalt oxide doped with aluminum (Al); and a coating layer positioned on a surface of the core particle and containing a cobalt(Co)-based compound having a rock salt crystal structure. A method of producing the positive electrode active material is also provided using a solid-phase method. The positive electrode active material can be applied to a positive electrode, lithium rechargeable battery, battery module, battery pack, and the like.
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: May 24, 2022
    Inventors: Chi Ho Jo, Hyuck Hur, Seul Ki Kim, Wang Mo Jung, Gi Beom Han
  • Publication number: 20220149367
    Abstract: The present disclosure provides a positive electrode active material for a secondary battery, comprising: a lithium nickel-based oxide doped with a doping element (M?), wherein the doping element (M?) is at least one selected from the group consisting of titanium (Ti) and magnesium (Mg), wherein when the doping element (M?) is Ti, the doping content of Ti is 3000 ppm to 5000 ppm based on the total amount of the lithium nickel-based oxide excluding the doping element, wherein when the doping element (M?) is Mg, the doping content of Mg is 500 ppm to 5000 ppm based on the total amount of the lithium nickel-based oxide excluding the doping element, and wherein when the doping element (M?) is Ti and Mg, the total doping content of Ti and Mg is 3500 ppm to 5000 ppm based on the total amount of the lithium nickel oxide excluding the doping elements.
    Type: Application
    Filed: September 22, 2020
    Publication date: May 12, 2022
    Applicant: LG Energy Solution, Ltd.
    Inventors: Jungmin Han, Gi Beom Han, Sang Wook Lee, Hakyoon Kim, Sora Baek, Wang Mo Jung
  • Patent number: 11289695
    Abstract: A positive electrode active material includes a lithium-rich lithium manganese-based oxide, wherein the lithium-rich lithium manganese-based oxide is represented by the following chemical formula (1), Li1+aNixCoyMnzMvO2-bAb??(1) wherein, 0<a?0.2, 0<x?0.4, 0<y?0.4, 0.5?z?0.9, 0?v?0.2, a+x+y+z+v=1, and 0?b?0.5; M is one or more elements selected from the group consisting of Al, Zr, Zn, Ti, Mg, Ga, In, Ru, Nb, and Sn; and A is one or more elements selected from the group consisting of P, N, F, S and Cl; wherein (i) lithium tungsten (W) compound, or the (i) lithium tungsten (W) compound and (ii) tungsten (W) compound are contained on the lithium-rich lithium manganese-based oxide; in an amount of 0.1% to 7% by weight based on the total weight of the positive electrode active material, wherein the (i) lithium tungsten (W) compound includes a composite of the (ii) tungsten (W) compound and a lithium.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: March 29, 2022
    Inventors: Gi Beom Han, Jintae Hwang, Sungbin Park, Wang Mo Jung
  • Patent number: 11258054
    Abstract: A positive electrode active material contains a lithium-rich lithium manganese-based oxide represented by chemical formula (1), Li1+aNixCoyMnzMvO2?bAb??(1) wherein, 0<a?0.2, 0<x?0.4, 0<y?0.4, 0.5?z?0.9, 0?v?0.2, a+x+y+z+v=1, and 0?b?0.5; M is one or more elements selected from the group consisting of Al, Zr, Zn, Ti, Mg, Ga, In, Ru, Nb, and Sn; and A is one or more elements selected from the group consisting of P, N, F, S and Cl; and a coating layer formed on a surface of the lithium-rich lithium manganese-based oxide, wherein the coating layer contains a lithium-deficient transition metal oxide in a lithium-deficient state having a molar ratio of lithium to transition metal of less than 1 is formed on the surface of the lithium-rich lithium manganese-based oxide, and wherein the content of the coating layer is 1% to 10% by weight based on the total weight of the positive electrode active material.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: February 22, 2022
    Inventors: Gi Beom Han, Min Kyu You, Chi Ho Jo, Jintae Hwang, Wang Mo Jung, Sungbin Park
  • Publication number: 20220037658
    Abstract: A lithium composite transition metal oxide includes nickel (Ni), cobalt (Co), and manganese (Mn), wherein the lithium composite transition metal oxide includes two or more kinds of first dopants selected from the group consisting of Zr, Al, V, Co, and Mg and two or more kinds of second dopants selected from the group consisting of Ti, Y, Sr, Nb, Ba, and Ca, and particles of the lithium composite transition metal oxide has a crystallite size of 170-300 nm.
    Type: Application
    Filed: October 21, 2019
    Publication date: February 3, 2022
    Applicant: LG Chem, Ltd.
    Inventors: Sang Min Park, Ji Hye Kim, Tae Gu Yoo, Wang Mo Jung, Gi Beom Han
  • Patent number: 11031632
    Abstract: The present invention relates to a method for recovering a positive electrode active material from a lithium secondary battery including: 1) separating a positive electrode into a collector and a positive electrode part; 2) removing an organic substance by firing the separated positive electrode part; 3) washing the fired resultant and removing remaining fluorine (F); 4) adding a lithium-containing material into the washed resultant and firing to recover a lithium transition metal oxide.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: June 8, 2021
    Inventors: Dong Hun Lee, Dae Jin Lee, Ji Hoon Ryu, Gi Beom Han, Dong Hwi Kim, Wang Mo Jung, Sang Wook Lee, Eun Sol Lho
  • Publication number: 20210167365
    Abstract: A positive electrode material for a lithium secondary battery according to the present invention includes a first positive electrode active material and a second positive electrode active material, wherein the first positive electrode active material and the second positive electrode active material are lithium composite transition metal oxides containing transition metals such as nickel (Ni), cobalt (Co) and manganese (Mn), the first positive electrode active material has a larger average particle size (D50) than the second positive electrode active material, a ratio (Li/Me)1 of the mole number of lithium with respect to the total mole number of transition metals of the first positive electrode active material is more than 1 to 1.5 or less, a ratio (Li/Me)2 of the mole number of lithium (Li) with respect to the total mole number of transition metals of the second positive electrode active material is 0.9 to 1, and the second positive electrode active material has a crystallite size of 180 nm or more.
    Type: Application
    Filed: May 22, 2019
    Publication date: June 3, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Dong Hwi Kim, Dong Hun Lee, Wang Mo Jung, Sung Bin Park, Gi Beom Han
  • Publication number: 20200136141
    Abstract: A positive electrode active material for a secondary battery is provided, which includes a lithium composite transition metal oxide including nickel (Ni), cobalt (Co), and manganese (Mn), wherein a particle of the lithium composite transition metal oxide includes a core portion and a resistance portion formed on a surface of the core portion, and is composed of a single particle, wherein the core portion has a layered crystal structure of space group R-3m, and the resistance portion has a cubic rock-salt structure of space group Fm-3m.
    Type: Application
    Filed: October 18, 2019
    Publication date: April 30, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Gi Beom Han, Sang Min Park, Ji Hye Kim, Tae Gu Yoo, Wang Mo Jung
  • Patent number: 10622670
    Abstract: The present invention relates to a positive electrode active material for a secondary battery, which comprises a core including a lithium composite metal oxide, and a surface treatment layer located on a surface of the core and including an amorphous oxide, wherein the amorphous oxide including silicon (Si), nitrogen (N) and at least one metal element selected from the group consisting of a Group 1A element, a Group 2A element, and a Group 3B element, and a method for preparing the same.
    Type: Grant
    Filed: February 14, 2018
    Date of Patent: April 14, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Dae Jin Lee, Dong Hun Lee, Ji Hoon Ryu, Gi Beom Han, Dong Hwi Kim, Wang Mo Jung, Sang Wook Lee
  • Publication number: 20200083522
    Abstract: The present invention provides a positive electrode active material comprising a lithium-rich lithium manganese-based oxide, wherein the lithium-rich lithium manganese-based oxide is represented by the following chemical formula (1), Li1+aNixCoyMnzMvO2?bAb??(1) wherein, 0<a?0.2, 0<x?0.4, 0<y?0.4, 0.5?z?0.9, 0?v?0.2, a+x+y+z+v=1, and 0?b?0.5; M is one or more elements selected from the group consisting of Al, Zr, Zn, Ti, Mg, Ga, In, Ru, Nb, and Sn; and A is one or more elements selected from the group consisting of P, N, F, S and Cl; wherein a coating layer containing a lithium-deficient transition metal oxide in a lithium-deficient state having a molar ratio of lithium to transition metal of less than 1 is formed on the surface of the lithium-rich lithium manganese-based oxide, and wherein the content of the coating layer is 1% to 10% by weight based on the total weight of the positive electrode active material, and a method for producing the same.
    Type: Application
    Filed: September 7, 2018
    Publication date: March 12, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Gi Beom Han, Min Kyu You, Chi Ho Jo, Jintae Hwang, Wang Mo Jung, Sungbin Park
  • Publication number: 20200067091
    Abstract: A surface of a LiCoO2-based positive electrode active material to have a rock salt crystal structure is provided. Specifically, a positive electrode active material for a lithium rechargeable battery is provided, including: a core particle containing lithium cobalt oxide doped with aluminum (Al); and a coating layer positioned on a surface of the core particle and containing a cobalt(Co)-based compound having a rock salt crystal structure. A method of producing the positive electrode active material is also provided using a solid-phase method. The positive electrode active material can be applied to a positive electrode, lithium rechargeable battery, battery module, battery pack, and the like.
    Type: Application
    Filed: August 23, 2019
    Publication date: February 27, 2020
    Inventors: Chi Ho Jo, Hyuck Hur, Seul Ki Kim, Wang Mo Jung, Gi Beom Han
  • Publication number: 20200020942
    Abstract: A positive electrode active material contains a lithium-rich lithium manganese-based oxide, wherein the lithium manganese-based oxide has a composition of the following chemical formula (1), and wherein a lithium ion conductive glass-ceramic solid electrolyte layer containing at least one selected from the group consisting of thio-LISICON(thio-lithium super ionic conductor), LISICON(lithium super ionic conductor), Li2S—SiS2—Li4SiO4, and Li2S—SiS2—P2S5—Lil is formed on the surface of the lithium manganese-based oxide particle: Li1?xMyMn1?x?yO2?zQz ??(1) wherein, 0<x?0.2, 0<y?0.2, and 0?z?0.5; M is at least one element selected from the group consisting of Al, Mg, Ni, Co, Fe, Cr, V, Ti, Cu, B, Ca, Ga, In, Ru, Zn, Zr, Nb, Sn, Mo, Sr, Sb, W, Ti and Bi; and Q is at least one element selected from the group consisting of P, N, F, S and Cl.
    Type: Application
    Filed: September 7, 2018
    Publication date: January 16, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Gi Beom Han, Jintae Hwang, Wang Mo Jung, Min Kyu You, Chi Ho Jo, Sungbin Park, Inseong Ju, Hyuck Hur, Younguk Park, Tae Gu Yoo
  • Publication number: 20190386294
    Abstract: A positive electrode active material includes a lithium-rich lithium manganese-based oxide, wherein the lithium-rich lithium manganese-based oxide is represented by the following chemical formula (1), Li1+aNixCoyMnzMvO2-bAb??(1) wherein, 0<a?0.2, 0<x?0.4, 0<y?0.4, 0.5?z?0.9, 0?v?0.2, a+x+y+z+v=1, and 0?b?0.5; M is one or more elements selected from the group consisting of Al, Zr, Zn, Ti, Mg, Ga, In, Ru, Nb, and Sn; and A is one or more elements selected from the group consisting of P, N, F, S and Cl; wherein (i) lithium tungsten (W) compound, or the (i) lithium tungsten (W) compound and (ii) tungsten (W) compound are contained on the lithium-rich lithium manganese-based oxide; in an amount of 0.1% to 7% by weight based on the total weight of the positive electrode active material, wherein the (i) lithium tungsten (W) compound includes a composite of the (ii) tungsten (W) compound and a lithium.
    Type: Application
    Filed: September 7, 2018
    Publication date: December 19, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Gi Beom Han, Jintae Hwang, Sungbin Park, Wang Mo Jung
  • Patent number: 10236503
    Abstract: A device for preparing a lithium composite transition metal oxide includes first and second mixers continuously arranged in a direction in which a fluid proceeds, wherein the first mixer has a closed structure including a hollow fixed cylinder, a rotating cylinder having the same axis as that of the hollow fixed cylinder and having an outer diameter that is smaller than an inner diameter of the fixed cylinder, an electric motor to generate power for rotation of the rotating cylinder, a rotation reaction space, as a separation space between the hollow fixed cylinder and the rotating cylinder, in which ring-shaped vortex pairs periodically arranged along a rotating shaft and rotating in opposite directions are formed, first inlets through which raw materials are introduced into the rotation reaction space, and a first outlet to discharge a reaction fluid formed from the rotation reaction space.
    Type: Grant
    Filed: January 2, 2014
    Date of Patent: March 19, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Ji Hoon Ryu, Sung Joong Kang, Seong Hoon Kang, Sang Seung Oh, Wang Mo Jung, Chi Ho Jo, Gi Beom Han
  • Publication number: 20180233766
    Abstract: The present invention relates to a positive electrode active material for a secondary battery, which comprises a core including a lithium composite metal oxide, and a surface treatment layer located on a surface of the core and including an amorphous oxide, wherein the amorphous oxide including silicon (Si), nitrogen (N) and at least one metal element selected from the group consisting of a Group 1A element, a Group 2A element, and a Group 3B element, and a method for preparing the same.
    Type: Application
    Filed: February 14, 2018
    Publication date: August 16, 2018
    Inventors: Dae Jin Lee, Dong Hun Lee, Ji Hoon Ryu, Gi Beom Han, Dong Hwi Kim, Wang Mo Jung, Sang Wook Lee
  • Publication number: 20180212282
    Abstract: The present invention relates to a method for recovering a positive electrode active material from a lithium secondary battery including: 1) separating a positive electrode into a collector and a positive electrode part; 2) removing an organic substance by firing the separated positive electrode part; 3) washing the fired resultant and removing remaining fluorine (F); 4) adding a lithium-containing material into the washed resultant and firing to recover a lithium transition metal oxide.
    Type: Application
    Filed: January 10, 2018
    Publication date: July 26, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Dong Hun Lee, Dae Jin Lee, Ji Hoon Ryu, Gi Beom Han, Dong Hwi Kim, Wang Mo Jung, Sang Wook Lee, Eun Sol Lho
  • Patent number: 9831491
    Abstract: Provided are a Si/C composite, in which carbon (C) is dispersed in an atomic state in a silicon (Si) particle, and a method of preparing the Si/C composite. Since the Si/C composite of the present invention is used as an anode active material, electrical conductivity may be further improved and volume expansion may be minimized. Thus, life characteristics of a lithium secondary battery may be improved.
    Type: Grant
    Filed: May 8, 2014
    Date of Patent: November 28, 2017
    Assignee: LG Chem, Ltd.
    Inventors: Ji Hoon Ryu, Hong Kyu Park, Wang Mo Jung, Sung Joong Kang, Chi Ho Jo, Gi Beom Han