Patents by Inventor Yong Tae An

Yong Tae An 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).

  • Method of synthesis of high dispersed spherical Y or Nb doped lithium titanate oxide using titanium tetrachloride and lithium hydroxide
    Patent number: 9050776
    Abstract: The present disclosure relates to a method of synthesis of Lithium Titanate Oxide used for a cathode of Lithium ion battery, the method comprising: (A) diluting TiCl4 with TiOCl2; (B) adding YCl3 or NbCl5 at the rate of 0.1˜2 mol % to Ti(mol); (C) forming a complex salt by dissolving to put at least one selected from a group consisting of Hydroxy propyl cellulose or Polyethylene glycol in a solvent, the Hydroxy propyl cellulose being a complexing agent and being a dispersing agent as well, whereas the Polyethylene glycol being a dispersing agent; (D) synthesizing a titanium precursor by adding an aqueous ammonia solution; (E) preparing Y or Nb doped titanium dioxide(TiO2) powder by heat-treating the synthetic product in a temperature of 500˜700° C.; and (F) mixing the Y or Nb doped TiO2 powder with LiOH.H2O and heat-treating the mixture in a temperature of 800˜900° C.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: June 9, 2015
    Assignee: KOREA INSTITUTE OF CERAMIC ENGINEERING AND TECHNOLOGY
    Inventors: Byung Hyun Choi, Mi Jung Ji, Eun Kyung Kim, Young Jin Kwon, Sung Hun Jung, Yong Tae An
  • METHOD OF SYNTHESIS OF HIGH DISPERSED SPHERICAL Y OR Nb DOPED LITHIUM TITANATE OXIDE USING TITANIUM TETRACHLORIDE AND LITHIUM HYDROXIDE
    Publication number: 20140004346
    Abstract: The present disclosure relates to a method of synthesis of Lithium Titanate Oxide used for a cathode of Lithium ion battery, the method comprising: (A) diluting TiCl4 with TiOCl2; (B) adding YCl3 or NbCl5 at the rate of 0.1˜2 mol % to Ti(mol); (C) forming a complex salt by dissolving to put at least one selected from a group consisting of Hydroxy propyl cellulose or Polyethylene glycol in a solvent, the Hydroxy propyl cellulose being a complexing agent and being a dispersing agent as well, whereas the Polyethylene glycol being a dispersing agent; (D) synthesizing a titanium precursor by adding an aqueous ammonia solution; (E) preparing Y or Nb doped titanium dioxide(TiO2) powder by heat-treating the synthetic product in a temperature of 500˜700° C.; and (F) mixing the Y or Nb doped TiO2 powder with LiOH.H2O and heat-treating the mixture in a temperature of 800˜900° C.
    Type: Application
    Filed: August 31, 2012
    Publication date: January 2, 2014
    Inventors: Byung Hyun CHOI, Mi Jung Ji, Eun Kyung Kim, Young Jin Kwon, Sung Hun Jung, Yong Tae An