Patents by Inventor Eun-Kyung Kim

Eun-Kyung Kim 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).

  • NEGATIVE ELECTRODE ACTIVE MATERIAL, NEGATIVE ELECTRODE INCLUDING THE NEGATIVE ELECTRODE ACTIVE MATERIAL, AND SECONDARY BATTERY INCLUDING THE NEGATIVE ELECTRODE
    Publication number: 20200313173
    Abstract: A negative electrode active material which includes a core including SiOx (0<x<2), a shell disposed on the core and includes lithium silicate, and a coating layer disposed on the shell and includes carbon nanotubes. Also, a method of preparing a negative electrode active material as well as a negative electrode and a battery including the same.
    Type: Application
    Filed: October 19, 2018
    Publication date: October 1, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Il Geun OH, Eun Kyung KIM, Yong Ju LEE, Rae Hwan JO, Su Min LEE, Jung Hyun CHOI, Dong Hyuk KIM, Se Mi PARK
  • Negative Electrode for Lithium Secondary Battery, Lithium Secondary Battery Comprising the Same, and Method of Preparing the Negative Electrode
    Publication number: 20200295358
    Abstract: The present invention relates to a negative electrode for a secondary battery which comprises a negative electrode collector, a negative electrode active material layer formed on the negative electrode collector, and a lithium metal layer, wherein an adhesive layer is disposed between the negative electrode active material layer and the lithium metal layer, and the lithium metal layer comprises lithium and metal oxide in a weight ratio of 50:50 to 99:1.
    Type: Application
    Filed: July 11, 2018
    Publication date: September 17, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Oh Byong Chae, Sang Wook Woo, Eun Kyung Kim, Yoon Ah Kang, Jun Hyuk Song
  • NEGATIVE ELECTRODE ACTIVE MATERIAL, NEGATIVE ELECTRODE INCLUDING THE NEGATIVE ELECTRODE ACTIVE MATERIAL, AND SECONDARY BATTERY INCLUDING THE NEGATIVE ELECTRODE
    Publication number: 20200280059
    Abstract: The present invention relates to a negative electrode active material which includes a carbonaceous matrix including a first particle and a second particle, wherein the first particle includes a silicon core, an oxide layer which is disposed on the silicon core and includes SiOx (0<x?2), and a coating layer which covers at least a portion of a surface of the oxide layer and includes LiF, and the second particle is flaky graphite.
    Type: Application
    Filed: August 30, 2018
    Publication date: September 3, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Jung Hyun CHOI, So Ra LEE, Eun Kyung KIM, Yong Ju LEE, Sun Young SHIN, Hyeon Min SONG, Jee Eun KIM, Seo Young KWON, Il Geun OH, Jae Young LEE
  • Silicon-based active material-polymer composite and method for preparing same
    Patent number: 10763493
    Abstract: The present invention relates to a silicon-based active material-polymer composite which is secondary particles in which silicon-based particles as primary particles and conductive polymer particles having a modulus of elasticity of 10 Pa to 100 Pa at a temperature of 20° C. to 40° C. are uniformly mixed. The uniform mixture with the elastic conductive polymer particles provides for a buffering action against the stress generated by volumetric changes of the silicon-based particles.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: September 1, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Rae Hwan Jo, Eun Kyung Kim, Yong Ju Lee, Su Jin Park, Hyun Chul Kim, Jung Hyun Choi
  • NEGATIVE ELECTRODE ACTIVE MATERIAL, NEGATIVE ELECTRODE INCLUDING THE SAME, AND SECONDARY BATTERY INCLUDING THE NEGATIVE ELECTRODE
    Publication number: 20200266424
    Abstract: The present invention relates to a negative electrode active material including a carbonaceous matrix having a plurality of nano-particles, wherein the nano-particles have a silicon core, an oxide layer disposed on the silicon core and including SiOx (0<x?2), and a coating layer covering at least a portion of the surface of the oxide layer and including LiF.
    Type: Application
    Filed: November 9, 2018
    Publication date: August 20, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Jung Hyun CHOI, Seung Youn CHOI, Eun Kyung KIM, Yong Ju LEE, Rae Hwan JO, Su Min LEE, Dong Hyuk KIM, Se Mi PARK, Il Geun OH
  • LONG-LIFE AND ULTRA-HIGH ENERGY DENSITY LITHIUM SECONDARY BATTERY
    Publication number: 20200251728
    Abstract: A lithium secondary battery, wherein there is a pre-lithiated negative electrode such that a total irreversible capacity of a positive electrode is greater than a total irreversible capacity of the negative electrode while satisfying 150< (negative electrode discharge capacity/lithium secondary battery discharge capacity)×100<300, and a relative potential of the negative electrode with respect to lithium metal in an operating voltage range of the lithium secondary battery is in a range of ?0.1 V to 0.7 V. Such a lithium secondary battery is capable of maintaining a capacity retention of 60% or more even after 500 cycles or more while achieving an energy density per volume of 800 Wh/L or more.
    Type: Application
    Filed: April 17, 2020
    Publication date: August 6, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Jun Hyuk SONG, Eun Kyung KIM, Yong Ju LEE, Sang Wook WOO, Ju Ho CHUNG, Suk In NOH
  • Constant-current charging and discharging method for lithium secondary battery by controlling current based on internal resistance measurement
    Patent number: 10734688
    Abstract: A charging and discharging method for a lithium secondary battery is provided, wherein, while charging or discharging the lithium secondary battery using a constant current, the charge current or allowable discharge current is modified by measuring the internal resistance of the lithium secondary battery. In the charging and discharging method for a lithium secondary battery according to the present disclosure, the charging time and charge capacity, or the discharge current amount and discharge capacity, may be appropriately harmonized, and thus the method may be usefully used as a charging method and a discharging method for a lithium secondary battery.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: August 4, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Oh Byong Chae, Su Min Lee, Eun Kyung Kim, Sun Young Shin
  • METHOD OF PREPARING NEGATIVE ELECTRODE ACTIVE MATERIAL
    Publication number: 20200243836
    Abstract: The present invention relates to a method of preparing a negative electrode active material which includes forming a mixture by mixing Li2O and SiOx(0<x<2) particles including SiO2, forming a reaction product by performing a heat treatment on the mixture at 400° C. to 600° C., and removing a portion of lithium silicate in the reaction product by washing the reaction product.
    Type: Application
    Filed: October 19, 2018
    Publication date: July 30, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Il Geun OH, Eun Kyung KIM, Yong Ju LEE, Rae Hwan JO, Su Min LEE, Jung Hyun CHOI, Dong Hyuk KIM, Se Mi PARK
  • SILICON-CARBON COMPLEX AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME
    Publication number: 20200243853
    Abstract: A silicon-carbon complex comprising carbon-based particles and silicon-based particles, wherein the silicon-based particles are dispersed and positioned on surfaces of the carbon-based particles, the carbon-based particles have a specific surface area of 0.4 m2/g to 1.5 m2/g, and the silicon-based particles are doped with one or more elements selected from the group consisting of Mg, Li, Ca, and Al, and a negative electrode active material for lithium secondary battery comprising the same.
    Type: Application
    Filed: October 26, 2018
    Publication date: July 30, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Su Min LEE, Eun Kyung KIM, Yong Ju LEE, Rae Hwan JO, Dong Hyuk KIM, Se Mi PARK
  • Negative electrode for lithium ion secondary battery and method for manufacturing the same
    Patent number: 10727478
    Abstract: A negative electrode for a lithium secondary battery using lithium metal for the negative electrode and a method for manufacturing the same. The method includes forming a protective layer for dendrite prevention of the negative electrode. The method for manufacturing a negative electrode may be achieved by a process including coating a slurry containing fluorocarbon and/or fluorinated metal dispersed in a solvent onto a lithium metal layer and drying the slurry.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: July 28, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Oh-Byong Chae, Sang-Wook Woo, Hee-Won Choi, Eun-Kyung Kim
  • LITHIUM SECONDARY BATTERY AND METHOD FOR PREPARING THE SAME
    Publication number: 20200235419
    Abstract: A lithium secondary battery including a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode, wherein the negative electrode is lithiated by pre-lithiation, a total capacity of a negative electrode active material of the negative electrode is larger than a total capacity of a positive electrode active material of the positive electrode, and a charge capacity of the negative electrode is smaller than a charge capacity of the positive electrode by the pre-lithiation.
    Type: Application
    Filed: July 6, 2018
    Publication date: July 23, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Oh Byong CHAE, Yoon Ah KANG, Jun Hyuk SONG, Eun Kyung KIM, Sang Wook WOO
  • NEGATIVE ELECTRODE AND METHOD FOR PREPARING NEGATIVE ELECTRODE
    Publication number: 20200235406
    Abstract: A negative electrode according to one embodiment of the present invention comprises a current collector and a negative electrode active material layer disposed on the current collector, wherein the negative electrode active material layer includes a first particle and a second particle, the first particle includes a first core including artificial graphite; and a first shell disposed on the first core, said first shell including an oxide of the artificial graphite, wherein a sphericity of the first particle measured through a particle shape analyzer is from 0.94 to 0.98, the second particle is artificial graphite having sphericity measured through the particle shape analyzer of 0.70 to 0.92, and a weight ratio of the first particle and the second particle is from 1:1 to 1:9.
    Type: Application
    Filed: October 26, 2017
    Publication date: July 23, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Su Min LEE, Sun Young SHIN, Su Yeon LEE, Eun Kyung KIM
  • Pharmaceutical composition for preventing or treating immune diseases or inflammatory diseases, containing biguanide derivative compound as active ingredient
    Patent number: 10716771
    Abstract: The present invention relates to a biguanide derivative compound capable of effectively preventing and treating immune diseases. The biguanide-based derivative compound according to the present invention inhibits the generation of IL-17 and TNF-?, which are inflammatory cytokines, increases the activity of regulatory T cells having an immunomodulatory function, and exhibits excellent therapeutic effects in animal models of immune diseases. Accordingly, the biguanide-based derivative compound can be usefully used as an immunosuppressant or a pharmaceutical composition capable of preventing or treating various immune diseases, such as autoimmune diseases, inflammatory diseases, and transplant rejection, caused by the dysregulation of immune responses.
    Type: Grant
    Filed: June 19, 2019
    Date of Patent: July 21, 2020
    Assignee: THE CATHOLIC UNIVERSITY OF KOREA INDUSTRY-ACADEMIC CORPORATION FOUNDATION
    Inventors: Mi-La Cho, Chul-Woo Yang, Dong-Yun Shin, Min-Jung Park, Seon-Yeong Lee, Sung-Hee Lee, Eun-Ji Yang, Hye-Jin Son, Eun-Kyung Kim, Jae-Kyung Kim
  • Electrode Having No Current Collector and Secondary Battery Including the Same
    Publication number: 20200227740
    Abstract: An electrode for batteries that does not include a metal-film-type current collector is disclosed herein. In some embodiments, the electrode comprises a composite having a core-shell structure including a core having an electrode active material, and a metal material coated on or doped in the surface of the core. A secondary battery having the electrode has increased capacity and energy density and exhibits improved lifespan characteristics.
    Type: Application
    Filed: January 17, 2020
    Publication date: July 16, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Se Mi Park, Eun Kyung Kim, Yong Ju Lee, Sun Young Shin, Dong Hyuk Kim
  • NOVEL ARYL OR HETEROARYL TRIAZOLONE DERIVATIVES OR SALTS THEREOF, OR PHARMACEUTICAL COMPOSITIONS COMPRISING THE SAME
    Publication number: 20200223808
    Abstract: The present technology provides aryl or heteroaryl triazolone derivatives or pharmaceutically acceptable salts thereof, preparation processes thereof, pharmaceutical compositions comprising the same, and the use thereof. The aryl or heteroaryl triazolone derivatives or their pharmaceutically acceptable salts exhibit selective inhibitory activity on VAP-1 and therefore can be usefully applied, e.g., for the treatment and prophylaxis of nonalcoholic hepatosteatosis (NASH).
    Type: Application
    Filed: December 19, 2019
    Publication date: July 16, 2020
    Inventors: Tae Dong HAN, Hee Jae TAK, Eun Kyung KIM, Su Bin CHOI, Dong Hoon KIM, Sol PARK, Eun Hye JUNG, Hyun Ho CHOI, Tae Wang KIM, Mi Kyeong JU, Na Ry HA
  • TRIAZOLOPYRIDIN-3-ONES OR THEIR SALTS AND PHARMACEUTICAL COMPOSITIONS COMPRISING THE SAME
    Publication number: 20200223844
    Abstract: The present technology provides triazolopyridin-3-ones or pharmaceutically acceptable salts thereof, preparation processes thereof, pharmaceutical compositions comprising the same, and uses thereof. The triazolopyridin-3-ones or their pharmaceutically acceptable salts exhibit inhibitory activity on VAP-1 and therefore can be usefully applied, e.g., for the treatment and prophylaxis of nonalcoholic hepatosteatosis (NASH).
    Type: Application
    Filed: December 12, 2019
    Publication date: July 16, 2020
    Inventors: Tae Dong HAN, Hee Jae TAK, Eun Kyung KIM, Dong Hoon KIM, Su Bin CHOI, Sol PARK, Hyun Ho CHOI, Tae Wang KIM, Mi Kyeong JU, Na Ry HA
  • 3,3-DIFLUOROALLYLAMINES OR SALTS THEREOF AND PHARMACEUTICAL COMPOSITIONS COMPRISING THE SAME
    Publication number: 20200223827
    Abstract: The present technology provides 3,3-difluoroallylamines or pharmaceutically acceptable salts thereof, preparation processes thereof, pharmaceutical compositions comprising the same, and uses thereof. The 3,3-difluoroallylamines or their pharmaceutically acceptable salts exhibit potent inhibitory activity on VAP-1 and therefore can be usefully applied, e.g., for the treatment and prophylaxis of nonalcoholic hepatosteatosis (NASH).
    Type: Application
    Filed: December 12, 2019
    Publication date: July 16, 2020
    Inventors: Tae Dong HAN, Hee Jae TAK, Eun Kyung KIM, Eui Chul LEE, Sol PARK, Hyok Jun CHO, Cheol Hee LIM, So Young KIM, Hyun Ho CHOI, Da Na JEONG, Na Yeon YANG, Na Ry HA
  • Negative electrode active material and lithium secondary battery including the same
    Patent number: 10714741
    Abstract: The present invention relates to a silicon-carbon-based composite negative electrode active material, and a negative electrode for a secondary battery and a lithium secondary battery including the same, and particularly to a silicon-carbon-based composite negative electrode active material, in which physical stability is improved by including a carbon-based core capable of intercalating and deintercalating lithium ions and at least one silicon particle included in the carbon-based core and disposed in the form of being distributed in an outer portion of the carbon-based core, and a negative electrode for a secondary battery and a lithium secondary battery in which life characteristics are improved by including the same.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: July 14, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Jung Hyun Choi, Yong Ju Lee, Eun Kyung Kim
  • Lithium Metal Oxide, Negative Electrode Active Material For Lithium Secondary Battery Comprising The Same, And Method Of Preparing The Same
    Publication number: 20200220167
    Abstract: A method of preparing a lithium metal oxide having a nickel oxide layer formed on a surface thereof includes (1) complexing a nickel precursor onto a surface of a lithium metal oxide; and (2) calcining, through a heat treatment, the lithium metal oxide—the surface of which is complexed with the nickel precursor—obtained in step (1).
    Type: Application
    Filed: January 10, 2020
    Publication date: July 9, 2020
    Applicants: LG Chem, Ltd., Dongguk University Industry-Academic Cooperation Foundation
    Inventors: Ye Ri Kim, Yong Mook Kang, Mi Ru Jo, Eun Kyung Kim, Yong Ju Lee, Rae Hwan Jo
  • DEPOSITION OF LITHIUM FLUORIDE ON SURFACE OF LITHIUM METAL AND LITHIUM SECONDARY BATTERY USING THE SAME
    Publication number: 20200203714
    Abstract: In the case in which a lithium metal is used in order to increase the capacity of a lithium secondary battery, reversibility of charging and discharging is reduced due to dendrite, etc. A lithium metal having LiF deposited thereon exhibits high stability, whereby reversibility of charging and discharging is increased. In addition, in the case in which LiF is deposited, the lithium metal, which is a negative electrode material, is not consumed, and the shape of a lithium metal electrode is not greatly changed.
    Type: Application
    Filed: December 27, 2017
    Publication date: June 25, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Oh-Byong CHAE, Sang-Wook WOO, Hee-Won CHOI, Eun-Kyung KIM