Patents by Inventor Juno Shim

Juno 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).

  • Patent number: 7790220
    Abstract: The present invention, by coating the polymer electrolyte membranes for fuel cells with inorganic thin films via a PECVD method or a reactive sputtering method, reduces the methanol crossover sizably without seriously reducing the ionic conductivity of polymer electrolyte membranes, thereby, when applied to fuel cells, realizes a high performance of fuel cells. A surface of membrane can be coated with inorganic thin films made of inorganic materials, which are for example silicone oxide, titanium oxide, etc., so as to make composite polymer electrolyte membrane. For coating, plasma enhanced chemical vapor deposition method or reactive method can be used.
    Type: Grant
    Filed: December 30, 2003
    Date of Patent: September 7, 2010
    Assignee: Korea Institute of Science & Technology
    Inventors: Heung-Yong Ha, Soon-Jong Kwak, Daejin Kim, Juno Shim, In-Hwan Oh, Seong-Ahn Hong, Tae-Hoon Lim, Suk-Woo Nam
  • Publication number: 20070231655
    Abstract: The present invention relates to a method for manufacturing composite polymer electrolyte membranes coated with inorganic thin films for fuel cells using a plasma enhanced chemical vapor deposition (PECVD) method or a reactive sputtering method, so as to reduce the crossover of methanol through polymer electrolyte membranes for fuel cells and enhance the performance of the fuel cells. The manufacturing method of composite polymer electrolyte membranes coated with inorganic thin films for fuel cells according to the present invention is characterized to obtain composite membranes by coating the surface of commercial composite polymer electrolyte membranes for fuel cells with inorganic thin films using a PECVD method or a reactive sputtering method. The inorganic materials to form the inorganic thin films are chosen one or more from the group comprising silicon oxide (SiO2), titanium oxide (TiO2), zirconium oxide (ZrO2), zirconium phosphate (Zr(HPO4)2), zeolite, silicalite, and aluminum oxide (Al2O3).
    Type: Application
    Filed: April 27, 2007
    Publication date: October 4, 2007
    Applicant: Korea Institute of Science & Technology
    Inventors: Heung-Yong Ha, Soon Jong Kwak, Daejin Kim, Juno Shim, In-Hwan Oh, Seong-Ahn Hong, Tae-Hoon Lim, Suk-Woo Nam
  • Publication number: 20040241520
    Abstract: The present invention relates to a method for manufacturing composite polymer electrolyte membranes coated with inorganic thin films for fuel cells using a plasma enhanced chemical vapor deposition (PECVD) method or a reactive sputtering method, so as to reduce the crossover of methanol through polymer electrolyte membranes for fuel cells and enhance the performance of the fuel cells.
    Type: Application
    Filed: December 30, 2003
    Publication date: December 2, 2004
    Applicant: Korea Institute of Science and Technology
    Inventors: Heung-Yong Ha, Soon Jong Kwak, Daejin Kim, Juno Shim, In-Hwan Oh, Seong-Ahn Hong, Tae-Hoon Lim, Suk-Woo Nam