Patents by Inventor Li Jin Ghil

Li Jin Ghil 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).

  • Polymer blend electrolyte membrane for use at high temperature and manufacturing method thereof
    Patent number: 8092952
    Abstract: The present invention relates to a polymer blend electrolyte membrane comprising an inorganic polymer having polydimethylsiloxane as a main chain, which has a pore structure at both ends formed by condensation reaction between 3-aminopropyltriethoxysilane and tetraethylorthosilicate, wherein phosphoric acid is chemically linked to an amino group of the pore structure; and a proton-conducting polymer having a cation exchange group at the side chain thereof, as well as a manufacturing method thereof. Generally, proton-conducting electrolyte membranes have significantly reduced ion conductivity at high temperatures. However, proton-conducting electrolyte membranes have advantages in terms of efficiency and cost, and thus it is needed to develop an electrolyte membrane, which has excellent ion conductivity even at high temperature. Accordingly, the present invention aims to provide a polymer blend electrolyte membrane for use at high temperature and a manufacturing method thereof.
    Type: Grant
    Filed: August 20, 2008
    Date of Patent: January 10, 2012
    Assignees: Hyundai Motor Company, Industry-University Cooperation Foundation Sogang University
    Inventors: In Chul Hwang, Nak Hyun Kwon, Ki Yun Cho, Young Taek Kim, Hee Woo Rhee, Li Jin Ghil
  • Polymer blend electrolyte membrane for use at high temperature and manufacturing method thereof
    Publication number: 20090208848
    Abstract: The present invention relates to a polymer blend electrolyte membrane comprising an inorganic polymer having polydimethylsiloxane as a main chain, which has a pore structure at both ends formed by condensation reaction between 3-aminopropyltriethoxysilane and tetraethylorthosilicate, wherein phosphoric acid is chemically linked to an amino group of the pore structure; and a proton-conducting polymer having a cation exchange group at the side chain thereof, as well as a manufacturing method thereof. Generally, proton-conducting electrolyte membranes have significantly reduced ion conductivity at high temperatures. However, proton-conducting electrolyte membranes have advantages in terms of efficiency and cost, and thus it is needed to develop an electrolyte membrane, which has excellent ion conductivity even at high temperature. Accordingly, the present invention aims to provide a polymer blend electrolyte membrane for use at high temperature and a manufacturing method thereof.
    Type: Application
    Filed: August 20, 2008
    Publication date: August 20, 2009
    Applicants: Hyundai Motor Company, Industry-University Cooperation Foundation Songang University
    Inventors: Ki Yun Cho, In Chul Hwang, Nak Hyun Kwon, Young Taek Kim, Hee Woo Rhee, Li Jin Ghil