Patents Assigned to LG Chem, Ltd.
  • Publication number: 20200220177
    Abstract: A binder, an electrode and a lithium secondary battery comprising the same, wherein the binder includes a first block including a polymer containing functional groups substitutable with lithium ions and a second block. The second block may include a polymer containing oxygen atoms in the main chain. With such a binder, it is possible to prevent the agglomeration of the slurry for preparing the electrode, thereby preventing the occurrence of cracks on the surface of the electrode and improving the life characteristics of the lithium secondary battery.
    Type: Application
    Filed: September 27, 2018
    Publication date: July 9, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Taek Gyoung KIM, Joo Hyeong LEE, Kyung Oh KIM, Doo Kyung YANG
  • Publication number: 20200220173
    Abstract: A positive electrode active material for a secondary battery is provided. The positive electrode active material being a lithium cobalt-based oxide includes a doping element M. A lithium cobalt-based oxide particle containing the doping element M in an amount of 3,000 ppm or more, wherein in a bulk portion corresponding to 90% of a core side among the radius from a core of the particle to a surface thereof, the doping element M in the lithium cobalt-based oxide particle is contained at a constant concentration, and in a surface portion from the surface of the particle to 100 nm in a core direction, the doping element M is contained at a concentration equal to or higher than that in the bulk portion and has a concentration in which the concentration thereof is gradient gradually decreased in the core direction from the surface of the particle.
    Type: Application
    Filed: August 29, 2018
    Publication date: July 9, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Chi Ho Jo, Min Kyu You, Sung Bin Park, Hyuck Hur, Jin Tae Hwang, Wang Mo Jung
  • Publication number: 20200220199
    Abstract: An electrode assembly includes a cell stack part having (a) a structure in which one kind of radical unit having a same number of electrodes and separators alternately disposed and integrally combined is repeatedly disposed, or (b) a structure in which at least two kinds of radical units having a same number of electrodes and separators alternately disposed and integrally combined are disposed in a predetermined order, and a fixing part extending from a top surface along a side to a bottom surface thereof for fixing the cell stack part. The one kind of radical unit has a four-layered structure in which first electrode, first separator, second electrode and second separator are sequentially stacked or a repeating structure in which the four-layered structure is repeatedly stacked, and each of the at least two kinds of radical units are stacked by ones to form the four-layered structure or the repeating structure.
    Type: Application
    Filed: February 14, 2020
    Publication date: July 9, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Ah Reum Jung, Ji Won Park, Myung Hoon Ko, Seung Ho Na, Jin Ho Ban
  • Publication number: 20200220216
    Abstract: A non-aqueous electrolyte solution for a lithium secondary battery and a lithium secondary battery including the same are disclosed herein. In an embodiment, a non-aqueous electrolyte solution for a lithium secondary battery includes a lithium salt, an organic solvent, and an additive, wherein the additive is a mixed additive which includes lithium difluorophosphate, fluorobenzene, tetravinylsilane, and a compound containing one sulfonate group or sulfate group in a weight ratio of 1:2:0.05:0.5 to 1:8:0.3:2.
    Type: Application
    Filed: November 13, 2018
    Publication date: July 9, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Ha Eun Kim, Young Min Lim, Gwang Yeon Kim, Chul Haeng Lee
  • 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
  • Publication number: 20200219709
    Abstract: The present invention provides a method enabling a quantitative analysis of a polymer by MALDI mass spectrometry, and a method for manufacturing a sample for MALDI mass spectrometry for a quantitative analysis of a polymer. To that end, the methods can increase reproducibility of a MALDI spectrum by making uniform the thickness of a sample affecting the pattern in a polymer MALDI spectrum. The sample according to the present invention is applicable also to a commercial MALDI-TOF instrument, and, thus, can quantitatively analyze a polymer in a more efficient and faster manner.
    Type: Application
    Filed: September 11, 2018
    Publication date: July 9, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Yongjin Bae, Jong Chan Kim, Yeu Young Youn, Young Hee Lim, Hye Sung Cho
  • Publication number: 20200216725
    Abstract: The present application relates to a photocurable solventless pressure-sensitive adhesive composition, a pressure-sensitive adhesive polarizing plate and a display device. According to the present application, a pressure-sensitive adhesive composition, a polarizing plate and a liquid crystal device, which have excellent durability and antistatic abilities, can be provided.
    Type: Application
    Filed: September 13, 2018
    Publication date: July 9, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Seung Ju Noh, Ha Song Yun, Woo Yeon Kim, Hyun Hee Son, Jang Soon Kim, Kwang Su Seo
  • Publication number: 20200220139
    Abstract: A crosslinked polyolefin separator which has gels with a longer side length of 50 ?m or more in a number ranging from 0 to 3 per 1 m2 of the separator, and shows a standard deviation of absorbance ratio between the center of the separator and the side thereof ranging from 0.01 to 0.5 is provided. A method for manufacturing the crosslinked polyolefin separator is also provided. The method includes (S1) preparing a polyolefin porous membranes, and (S2) applying a coating solution containing an initiator and alkoxy group-containing vinylsilane onto at least one surface of the porous membrane. The coating solution can permeate even to the inside of exposed pores. Thus, it is possible to provide a crosslinked polyolefin separator in which silane crosslinking occurs uniformly even inside of the pores.
    Type: Application
    Filed: July 26, 2019
    Publication date: July 9, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Joo-Sung Lee, Bi-Oh Ryu, Won-Sik Bae, A-Young Lee, Heon-Sik Song
  • Publication number: 20200220156
    Abstract: A negative electrode including: a negative electrode current collector; and a negative electrode active material layer on at least one surface of the negative electrode current collector. The negative electrode is pre-lithiated and the negative electrode active material layer includes a silicon-based material and a carbonaceous material. In addition, a graphene sheet having 2 layers to 15 layers is on the negative electrode active material layer. The negative electrode is advantageous in terms of storage and safety. A lithium secondary battery using the negative electrode shows reduced initial irreversibility, and thus provides increased efficiency.
    Type: Application
    Filed: December 20, 2018
    Publication date: July 9, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Sun-Young SHIN, Jun-Hyuk SONG, Yong-Ju LEE, Je-Young KIM
  • Publication number: 20200220128
    Abstract: Disclosed is a battery pack including a battery module having a plurality of battery cells, and a heat dissipation member provided in contact with a bus bar at a side surface of the battery module where electrode leads of the battery cells and the bus bar coupled to the electrode leads are disposed.
    Type: Application
    Filed: November 12, 2018
    Publication date: July 9, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Kyung-Mo Kim, Ho-June Chi, Jeong-O Mun, Jin-Yong Park, Jung-Hoon Lee
  • Publication number: 20200216713
    Abstract: The present invention relates to a coating composition for a flexible plastic film, and more specifically to a coating composition for producing a flexible plastic film having excellent flexibility while exhibiting high hardness. According to the present invention, the coating composition exhibits flexibility, bending property, high hardness, scratch resistance and high transparency, and hardly has a risk of damaging the film even in repetitive, continuous bending or long-time folding state, and thereby can be usefully applied to flexible mobile devices, display devices, front face and display unit of various instrument panels, and the like.
    Type: Application
    Filed: March 18, 2020
    Publication date: July 9, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Hye Min KIM, Jin Young PARK, Yeong Rae CHANG
  • Publication number: 20200218153
    Abstract: The present invention relates to a chemically amplified photoresist composition including an alkali-soluble resin including a (meth)acrylate-based resin containing a (meth)acrylate-based repeating unit in which a heterocyclic compound is substituted via a divalent functional group containing an alkylene sulfide having 1 to 20 carbon atoms.
    Type: Application
    Filed: July 24, 2018
    Publication date: July 9, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Hyun Min PARK, Minyoung LIM, Tae Seob LEE
  • Publication number: 20200220169
    Abstract: A sulfur-carbon composite including porous carbon material, and sulfur, wherein at least a portion of an inside and a surface of the porous carbon material coated with the sulfur, the sulfur-carbon composite has a pore volume of 0.180 cm3/g to 0.300 cm3/g, and the sulfur-carbon composite has an average pore size of 40.0 nm to 70.0 nm, and a method of manufacturing the same. Also, a method of manufacturing a sulfur-carbon composite, which includes (a) mixing a porous carbon material with sulfur particles, wherein the sulfur particles have a particle size of 1 nm to 1 ?m using a Henschel mixer; and (b) drying the resulting mixture of (a).
    Type: Application
    Filed: October 24, 2018
    Publication date: July 9, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Eui Tae KIM, Kwonnam SOHN, Doo Kyung YANG
  • Publication number: 20200220124
    Abstract: A battery module and a method of manufacturing the same are disclosed herein. In some embodiments, a battery module includes a module case having an internal space formed by a top plate, a bottom plate and sidewalls of the module case, a plurality of battery cells disposed in the internal space, a first filler-containing cured resin layer in contact with both the top plate and the plurality of battery cells, and a second filler-containing cured resin layer in contact with both the bottom plate and the plurality of battery cells. The battery module can have excellent power relative to volume, while being manufactured in a simple process and at a low cost.
    Type: Application
    Filed: September 17, 2018
    Publication date: July 9, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Hyoung Sook Park, Ban Seok Choi, Se Woo Yang, Yoon Gyung Cho, Yang Gu Kang, Eun Suk Park, Sang Min Park
  • Publication number: 20200217991
    Abstract: Described herein is an anti-reflective film including: a hard coating layer; and a low-refractive layer containing a binder resin and hollow inorganic nanoparticles and solid inorganic nanoparticles dispersed in the binder resin. The hollow and solid inorganic particles are dispersed in the low-refractive layer such that the amount of the solid inorganic nanoparticles positioned close to an interface between the hard coating layer and the low-refractive layer is larger than that of the hollow inorganic nanoparticles. Also described is a manufacturing method of the anti-reflective film including: applying a resin composition containing a photopolymerizable compound or a (co)polymer thereof, a fluorine-containing compound including a photoreactive functional group, a photoinitiator, hollow inorganic nanoparticles, and solid inorganic nanoparticles on a hard coating layer, and drying the applied resin composition at a temperature of 35° C. to 100° C.; and photocuring the dried resin composition.
    Type: Application
    Filed: March 16, 2020
    Publication date: July 9, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Jin Seok BYUN, Heon KIM, Boo Kyung KIM, Seok Hoon JANG, Yeong Rae CHANG
  • Publication number: 20200215455
    Abstract: The present invention relates to a micro device for solid phase extraction and more particularly provides a micro device which is configured to perform solid phase extraction by injecting a filler and a solvent and producing a uniform flow of the solvent.
    Type: Application
    Filed: October 12, 2018
    Publication date: July 9, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Seonyoung Jegal, Dae Hun Kim, Byoung Hyoun Kim, Yeu Young Youn, Kyoungjoo Jin, Jun Won Choi, Su Youn Han
  • Publication number: 20200216623
    Abstract: The superabsorbent polymer has absorption under pressure/under no pressure, permeability, and absorption speed that are suitable for the application in thin hygienic goods, and simultaneously, inhibits the generation of dust in the preparation process of hygienic goods and does not exhibit blocking in the preparation process of the superabsorbent polymer.
    Type: Application
    Filed: August 7, 2018
    Publication date: July 9, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Taebin Ahn, Dong Hyun Kim, Chang Hun Han
  • Publication number: 20200216724
    Abstract: An adhesive composition and an adhesive film are provided.
    Type: Application
    Filed: September 28, 2018
    Publication date: July 9, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Su Eun Lee, Joo Hyun Lee, Hu Young Yoon, Jun Man Choi, Jang Soon Kim, Kwang Su Seo
  • Publication number: 20200217893
    Abstract: Disclosed is an apparatus and method for diagnosing a short circuit accident occurring at a positive electrode contactor of a battery pack. This apparatus diagnoses a positive electrode contactor of a battery pack, which includes a positive electrode contactor provided on a charge-discharge path connected to a positive electrode terminal and a negative electrode contactor provided on a charge-discharge path connected to a negative electrode terminal.
    Type: Application
    Filed: December 11, 2018
    Publication date: July 9, 2020
    Applicant: LG Chem, Ltd.
    Inventor: Jeong-Joo Song
  • Patent number: 10702626
    Abstract: The present invention relates to a method for preparing superabsorbent polymer that has antibacterial activity, in which the basic properties of superabsorbent polymer are maintained or improved, and may exhibits excellent bacterial proliferation inhibition effect, and superabsorbent polymer prepared thereby. The preparation method of superabsorbent polymer comprises the steps of: forming base polymer powder using hydogel polymer comprising crosslinked polymer, and then, surface crosslinking the base polymer powder using a surface crosslinking solution comprising a surface crosslinking agent and cuprous oxide, wherein the cuprous oxide is included in the content of 0.001 to 2.5 parts by weight, based on 100 parts by weight of the base polymer powder.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: July 7, 2020
    Assignees: LG Chem. Ltd., Seoul National University R&DB Foundation
    Inventors: Yong Seok Choi, Young Sam Kim, Jong Doo Lim, Jong-Chan Lee, Na Kyung Kim, Jinseok Kim