Patents by Inventor Chul Hong Woo

Chul Hong Woo 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).

  • High-capacity anode material for lithium secondary batteries and process for synthesizing the same
    Patent number: 9452939
    Abstract: The present invention features a high-capacity anode material for rapidly chargeable and dischargeable lithium secondary batteries, which is composed of Li4Ti5O12 nanoparticles. The Li4Ti5O12 nanoparticles of the present invention exhibit excellent crystallinity and high rate capability compared to those synthesized using a conventional polyol process or solid reaction process by converting Li4Ti5O12, which is a zero-strain insert material spotlighted as an anode active material for lithium secondary batteries, into Li4Ti5O12, having a high crystalline nanostructure using a solvothermal synthesis process without performing additional heat treatment. The present invention also features methods of, and a method of preparing the high-capacity anode materials described herein.
    Type: Grant
    Filed: May 11, 2010
    Date of Patent: September 27, 2016
    Assignees: Hyundai Motor Company, Industry Foundation of Chonnam National University
    Inventors: Jae Kook Kim, Chul Hong Woo, Eun Seok Choi, Jin Sub Lim, Dong Han Kim, Seung Ho Ahn
  • HIGH-CAPACITY ANODE MATERIAL FOR LITHIUM SECONDARY BATTERIES AND PROCESS FOR SYNTHESIZING THE SAME
    Publication number: 20110135564
    Abstract: is the present invention features a high-capacity anode material for rapidly chargeable and dischargeable lithium secondary batteries, which is composed of Li4Ti5O12 nanoparticles. The Li4Ti5O12 nanoparticles of the present invention exhibit excellent crystallinity and high rate capability compared to those synthesized using a conventional polyol process or solid reaction process by converting Li4Ti5O12, which is a zero-strain insert material spotlighted as an anode active material for lithium secondary batteries, into Li4Ti5O12, having a high crystalline nanostructure using a solvothermal synthesis process without performing additional heat treatment. The present invention also features methods of , and a method of preparing the high-capacity anode materials described herein.
    Type: Application
    Filed: May 11, 2010
    Publication date: June 9, 2011
    Applicants: HYUNDAI MOTOR COMPANY, INDUSTRY FOUNDATION OF CHONNAM NATIONAL UNIVERSITY
    Inventors: Jae Kook Kim, Chul Hong Woo, Eun Seok Choi, Jin Sub Lim, Dong Han Kim, Seung Ho Ahn