Patents by Inventor Dong Kyu YUN

Dong Kyu YUN 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).

  • Cathode active material having excellent electrochemical properties and lithium secondary battery comprising the same
    Patent number: 10230106
    Abstract: The present disclosure provides a cathode active material comprising: lithium transition metal oxide-based particles; and a titanium dioxide coating layer formed on a part or a whole of a surface of the particle, in which the titanium dioxide coating layer is a partially reduced TiO2?x (0<x<2), a preparation method thereof, and a lithium secondary battery including the cathode active material. The cathode active material of the present disclosure may significantly improve electrochemical properties of an electrochemical device including the cathode active material, preferably a lithium secondary battery by decomposing lithium-containing impurities remaining on the surface of the cathode active material by a partially reduced titanium dioxide coating layer formed on the surface of the cathode active material and enhancing the electrical conductivity of the cathode active material.
    Type: Grant
    Filed: May 11, 2016
    Date of Patent: March 12, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Ki Joo Hong, Hyeon Hui Baek, Dong Kyu Yun, Chang Joo Han
  • CATHODE ACTIVE MATERIAL HAVING EXCELLENT ELECTROCHEMICAL PROPERTIES AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME
    Publication number: 20170222223
    Abstract: The present disclosure provides a cathode active material comprising: lithium transition metal oxide-based particles; and a titanium dioxide coating layer formed on a part or a whole of a surface of the particle, in which the titanium dioxide coating layer is a partially reduced TiO2-x (0<x<2), a preparation method thereof, and a lithium secondary battery including the cathode active material. The cathode active material of the present disclosure may significantly improve electrochemical properties of an electrochemical device including the cathode active material, preferably a lithium secondary battery by decomposing lithium-containing impurities remaining on the surface of the cathode active material by a partially reduced titanium dioxide coating layer formed on the surface of the cathode active material and enhancing the electrical conductivity of the cathode active material.
    Type: Application
    Filed: May 11, 2016
    Publication date: August 3, 2017
    Applicant: GS Energy Corp.
    Inventors: Ki Joo HONG, Hyeon Hui BAEK, Dong Kyu YUN, Chang Joo HAN