Patents by Inventor Hye Lim Shim

Hye Lim Shim 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: 20210043938
    Abstract: Provided is a positive electrode slurry for preparing a positive electrode for a lithium secondary battery, the positive electrode slurry including a positive electrode active material, a conductive material, a binder, overcharge inhibitor, oxalic acid, and a solvent, wherein the overcharge inhibitor is included in an amount of 1 part by weight to 2 parts by weight, based on 100 parts by weight of the total solid content of the positive electrode active material, the conductive material, and the binder of the positive electrode slurry, the oxalic acid is included in an amount of 0.1 part by weight to 0.7 parts by weight, based on 100 parts by weight of the total solid content of the positive electrode active material, the conductive material, and the binder of the positive electrode slurry, and the positive electrode slurry has a viscosity of 4000 cp to 15000 cp at room temperature.
    Type: Application
    Filed: December 4, 2019
    Publication date: February 11, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Shanghao PIAO, Hye Lim SHIM, Wooha KIM, Sang Hoon CHOY
  • Publication number: 20200203778
    Abstract: A positive electrode slurry composition for a secondary battery which includes a positive electrode active material, a carbon-based conductive agent having a specific surface area (Brunauer-Emmett-Teller (BET)) of 100 m2/g to 200 m2/g, a binder, and a nitrile-based copolymer which has an electrolyte solution swelling degree defined by Equation (1) of 200% or less and does not contain a functional group other than a cyano group is provided: electrolyte solution swelling degree (%)={(W1?W0)/W0}×100??Equation (1) wherein, W0 is an initial weight of a polymer film prepared from the nitrile-based copolymer, and W1 is a weight of the polymer film which is measured after storing the polymer film at 60° for 48 hours in an electrolyte solution.
    Type: Application
    Filed: March 4, 2020
    Publication date: June 25, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Jung Woo Yoo, Hye Lim Shim, Jun Muk Lim
  • Patent number: 9543568
    Abstract: The present invention relates to an electrode comprising multi-layered electrode active material layer and a secondary battery comprising the same. According to the embodiments of the present invention comprises electrode having multi-layered electrode active material layer, wherein the content of the active materials which forms the electrode active material layers is equally maintained and the loading amounts at each layer are either the same or different from each other, thereby solving the problem of performance deterioration caused by an increase in battery resistance due to non-uniform dispersion of a binder or the like.
    Type: Grant
    Filed: April 3, 2013
    Date of Patent: January 10, 2017
    Assignee: LG Chem, Ltd.
    Inventors: Nak Gi Sung, Duk Hyun Ryu, Cha Hun Ku, Jung Jin Kim, Hye Lim Shim
  • Patent number: 9490505
    Abstract: The present invention relates to an electrode assembly including a separator and a lithium secondary battery including the same for improving safety. The electrode assembly including a positive electrode, a negative electrode and a separator further includes a gasification material possibly being electrolyzed at a certain voltage to generate a gas. Since the electrode assembly and the lithium secondary battery including the same include the gasification material possibly being electrolyzed at the certain voltage to generate the gas, the safety of the battery may be increased. Since the gasification material is coated on the surface of the separator not on the electrode, the resistance increase of the battery may be restrained and the capacity lowering of the battery may be remarkably decreased. The lifetime of the battery is good.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: November 8, 2016
    Assignee: LG Chem, Ltd.
    Inventors: Hye Lim Shim, Duk Hyun Ryu, Cha Hun Ku, Jung Jin Kim, Nak Gi Sung
  • Publication number: 20130309530
    Abstract: The present invention relates to an electrode assembly including a separator and a lithium secondary battery including the same for improving safety. The electrode assembly including a positive electrode, a negative electrode and a separator further includes a gasification material possibly being electrolyzed at a certain voltage to generate a gas. Since the electrode assembly and the lithium secondary battery including the same include the gasification material possibly being electrolyzed at the certain voltage to generate the gas, the safety of the battery may be increased. Since the gasification material is coated on the surface of the separator not on the electrode, the resistance increase of the battery may be restrained and the capacity lowering of the battery may be remarkably decreased. The lifetime of the battery is good.
    Type: Application
    Filed: July 25, 2013
    Publication date: November 21, 2013
    Applicant: LG Chem, Ltd.
    Inventors: Hye Lim Shim, Duk Hyun Ryu, Cha Hun Ku, Jung Jin Kim, Nak Gi Sung