Patents by Inventor Wang Mo Jung

Wang Mo Jung 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: 11450846
    Abstract: The present disclosure relates to a positive electrode material which includes a first positive electrode active material, and a second positive electrode active material in the form of a single particle, wherein an amount of lithium impurities on a surface of the second positive electrode active material is 0.14 wt % or less based on a total weight of the second positive electrode active material, and at least one of nickel, cobalt, and manganese included in the second positive electrode active material has a concentration gradient gradually changing from the center of the particle to a surface thereof, a method of preparing the positive electrode material, and a positive electrode for a lithium secondary battery and a lithium secondary battery which include the positive electrode material.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: September 20, 2022
    Inventors: Young Uk Park, Tae Gu Yoo, Jin Tae Hwang, Wang Mo Jung, Sung Bin Park
  • Patent number: 11424447
    Abstract: A positive electrode active material for a lithium secondary battery is provided having a secondary particle formed by agglomerating a plurality of polycrystalline primary particles including a lithium composite metal oxide of Chemical Formula 1, wherein an average crystallite size of the primary particle is 180 to 400 nm, a particle size D50 of the primary particle is 1.5 to 3?m, and the primary particle is doped or surface-coated with at least one element M selected from the group consisting Al, Ti, Mg, Zr, Y, Sr, and B in an amount of 3,800 to 7,000 ppm: Lia(NixMnyCozAw)O2+b ??[Chemical Formula 1].
    Type: Grant
    Filed: November 22, 2018
    Date of Patent: August 23, 2022
    Inventors: Younguk Park, Tae Gu Yoo, Jintae Hwang, Wang Mo Jung, Sungbin Park
  • 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: 20220246925
    Abstract: A method of preparing a positive electrode active material for a secondary battery, is disclosed herein. In some embodiments, a method includes mixing a positive electrode active material precursor, a lithium source material, a first firing additive, a second firing additive, and a third firing additive a to form a mixture, wherein the positive electrode active material precursor contains nickel, cobalt, and manganese and has a nickel content of 60 mol % or more relative to a total molar amount of metals in the positive electrode active material precursor, and performing primary firing of the mixture to form a lithium transition metal oxide, wherein the first firing additive is a lithium-containing compound, the second firing additive is a carbonate ion-containing compound, and the third firing additive is a boron-containing compound.
    Type: Application
    Filed: August 5, 2020
    Publication date: August 4, 2022
    Applicant: LG Energy Solution, Ltd.
    Inventors: Eun Sol Lho, Sang Min Park, Wang Mo Jung, Sung Bin Park, Seul Ki Kim, Wen Xiu Wang
  • 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
  • Patent number: 11404693
    Abstract: The present disclosure relates to a cathode additive, a method for preparing the same, and a cathode and a lithium secondary battery including the same. More specifically, one embodiment of the present disclosure provides a cathode additive that can offset an irreversible capacity imbalance, and increase the initial charge capacity of a cathode.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: August 2, 2022
    Inventors: Ji Hye Kim, Byungchun Park, Jungmin Han, Wang Mo Jung
  • Patent number: 11398623
    Abstract: The present disclosure provides a preparing method of a positive electrode additive for a lithium secondary battery capable of reducing the amount of Li-based byproduct and unreacted lithium oxide generated in a preparing process, thereby significantly reducing the amount of gas generated when the electrode is operated.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: July 26, 2022
    Inventors: Eunsol Lho, Hyelim Jeon, Donghun Lee, Sang Wook Lee, Wang Mo Jung, Minsuk Kang, Sora Baek
  • 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: 11377367
    Abstract: Provided is a cobalt precursor for preparing a lithium cobalt oxide of a layered structure which is included in a positive electrode active material, wherein the cobalt precursor is cobalt oxyhydroxide (CoM?OOH) doped with, as dopants, magnesium (Mg) and M? different from the magnesium.
    Type: Grant
    Filed: October 22, 2020
    Date of Patent: July 5, 2022
    Inventors: Chi Ho Jo, Sungbin Park, Jiyoung Park, Bo Ram Lee, Hyuck Hur, Wang Mo Jung
  • Patent number: 11367871
    Abstract: The present invention provides a positive electrode active material for a secondary battery which includes a lithium transition metal oxide, wherein the positive electrode active material has three peaks in a differential graph (ERC curve) obtained by differentiating a pH value against an amount of acid (HCl) added, which is obtained by pH titration of 10 g of the lithium transition metal oxide using 0.5 M HCl, wherein a y-axis (dpH/dml) value of a first peak at the smallest x-axis value among the three peaks is ?1.0 or less.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: June 21, 2022
    Inventors: In Seong Ju, Wang Mo Jung, Byung Chun Park, Joo Hong Jin, Ju Kyung Shin, Ji Hye Kim, So Ra Baek, Tae Gu Yoo
  • Publication number: 20220185691
    Abstract: The present invention provides a positive electrode active material for a secondary battery, which includes a lithium transition metal oxide including nickel (Ni) and cobalt (Co), and at least one selected from the group consisting of aluminum (Al), manganese (Mn), and a combination thereof. The lithium transition metal oxide is characterized in that the content of nickel (Ni) in the total transition metal elements is 80 mol % or more, and the cation mixing ratio of Ni cations in a lithium layer in the lithium transition metal oxide structure is 1.1% or less.
    Type: Application
    Filed: March 8, 2022
    Publication date: June 16, 2022
    Applicant: LG Chem, Ltd.
    Inventors: Ji Hye Kim, Byung Chun Park, So Ra Baek, Tae Gu Yoo, 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: 20220158192
    Abstract: A negative electrode includes a negative electrode active material layer, wherein the negative electrode active material layer includes a negative electrode active material and a conductive material. The negative electrode active material includes SiOx (0?x<2) particles and the conductive material includes secondary particles in which a portion of one graphene sheet is connected to a portion of an adjacent graphene sheet and a carbon nanotube structure in which 2 to 5,000 single-walled carbon nanotube units are coupled to each other, wherein the oxygen content of the secondary particles is 1 wt % to 10 wt % based on the total weight of the secondary particles, the specific surface area of the secondary particles measured by a nitrogen adsorption BET method is 500 m2/g to 1100 m2/g, and the carbon nanotube structure is included in the negative electrode active material layer in an amount of an 0.01 wt % to 1.0 wt %.
    Type: Application
    Filed: March 9, 2020
    Publication date: May 19, 2022
    Applicant: LG Energy Solution, Ltd.
    Inventors: Tae Gon Kim, Ki Won Sung, Wang Mo Jung, Sin Young Park, Dae Jin Lee, Bo Ram Lee, Hak Yoon Kim
  • Publication number: 20220158194
    Abstract: The present invention relates to an electrode and a secondary battery including the same, the electrode including an electrode active material layer, wherein: the electrode active material layer includes an electrode active material, a hydrogenated nitrile butadiene rubber, and a conductive agent; the conductive agent includes a carbon nanotube structure in which 2 to 5,000 single-walled carbon nanotube units are bonded; and the carbon nanotube structure is included in the electrode active material layer in an amount of 0.01-0.5 wt %.
    Type: Application
    Filed: March 27, 2020
    Publication date: May 19, 2022
    Applicant: LG Energy Solution, Ltd.
    Inventors: Tae Gon Kim, Wang Mo Jung, Houng Sik Yoo, Bo Ram Lee, Dong Hyun Kim, Hak Yoon Kim
  • 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: 11329287
    Abstract: The present invention relates to a cathode additive, a method for preparing the same, and a cathode and a lithium secondary battery including the same. More specifically, one embodiment of the present invention provides a cathode additive that can offset an irreversible capacity imbalance, increase the initial charge capacity of a cathode, and simultaneously inhibit the generation of gas in a battery.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: May 10, 2022
    Inventors: Jungmin Han, Byungchun Park, Ji Hye Kim, Wang Mo Jung
  • Patent number: 11329286
    Abstract: A lithium cobalt-based positive electrode active material is provide, which includes sodium and calcium, wherein the total amount of the sodium and calcium is 150 ppm to 500 ppm based on the total weight of the lithium cobalt-based positive electrode active material. A method for preparing the lithium cobalt-based positive electrode active material is also provided.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: May 10, 2022
    Inventors: Sung Bin Park, Min Kyu You, Chi Ho Jo, Hyuck Hur, Jin Tae Hwang, Wang Mo Jung
  • Publication number: 20220140340
    Abstract: The present invention relates to a carbon nanotube having an La(100) of less than 7.0 nm when measured by XRD and a specific surface area of 100 m2/g to 196 m2/g, and an electrode and a secondary battery including the carbon nanotube.
    Type: Application
    Filed: March 6, 2020
    Publication date: May 5, 2022
    Applicant: LG Energy Solution, Ltd.
    Inventors: Tae Gon Kim, Wang Mo Jung, Kwang Woo Yoon, Seung Yong Son, Byung Joon Chae, Sin Young Park, Se Hui Sohn, Dae Jin Lee, Bo Ram Lee, Hak Yoon Kim, Seul Ki Kim, Jin Young Hwang
  • Publication number: 20220135428
    Abstract: Disclosed are a lithium transition metal oxide and a lithium secondary battery, in which a ratio of average particle diameter D50 of the lithium transition metal oxide to average particle diameter D50 of a transition metal precursor for preparation of the lithium transition metal oxide satisfies the condition represented by Equation 3 below: 0 < Average ? ? particle ? ? diameter ? ? D ? ? 50 ? ? of ? ? lithium ? ? transition ? metal ? ? oxide Average ? ? particle ? ? diameter ? ? D ? ? 50 ? ? of ? ? transition ? ? metal ? precursor < 1.2 .
    Type: Application
    Filed: January 19, 2022
    Publication date: May 5, 2022
    Applicant: LG Chem, Ltd.
    Inventors: Jinhyung Lim, Sung-Kyun Chang, Won Seok Chang, Sin Young Park, Ho Suk Shin, Hyun Jin Oh, Jung Min Han, In Sung Uhm, Wang Mo Jung, Dong Hun Lee
  • Publication number: 20220140329
    Abstract: A negative electrode active material for a secondary battery and a lithium secondary battery including the same. The negative electrode active material for a secondary battery, includes lithium titanium-based composite particles comprising: a lithium titanium oxide represented by LixTiyOz, wherein x, y and z satisfy 0.1?x?4, 1?y?5 and 2?z?12, Zr doped into the lithium titanium oxide; and an aluminum and sulfur containing compound coated on a surface of the lithium titanium oxide. The aluminum and sulfur containing compound is present in an amount of 0.4 mM to 0.9 mM based on 1M lithium titanium oxide.
    Type: Application
    Filed: February 24, 2020
    Publication date: May 5, 2022
    Applicant: LG Energy Solution, Ltd.
    Inventors: Sung-Bin PARK, Bo-Na KIM, Dae-Hong KIM, In-Sun YOO, Wang-Mo JUNG