Patents by Inventor Chang-Sung Jun

Chang-Sung Jun 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: 9160023
    Abstract: The present invention relates to an electrolyte-impregnated, reinforced matrix for molten carbonate fuel cells and a manufacturing method thereof. According to the invention, the electrolyte-impregnated matrix, which comprises both the electrolyte and the reinforcing particles including a metal and an oxide, is manufactured by adding the electrolyte, as required per unit cell of a fuel cell, and the reinforcing particles including the metal and the oxide, to a slurry during the matrix preparation step, and subjecting the resulting slurry to a tape casting process. By doing so, the matrix stacking operation is facilitated, and the matrix manufacturing process is simplified. In addition, cracking caused by the difference in thermal expansion coefficient between an electrolyte sheet and the matrix can be suppressed, and thermal shock occurring during operation of the fuel cell stack can be reduced, thus improving the performance and lifetime of the fuel cell.
    Type: Grant
    Filed: October 29, 2009
    Date of Patent: October 13, 2015
    Assignee: DOOSAN HEAVY INDUSTRIES & CONSTRUCTION CO., LTD.
    Inventors: Mi Young Shin, Bo Hyun Ryu, Hwan Moon, Ju Young Youn, Chang Sung Jun, Tae Won Lee, Kil Ho Moon
  • Publication number: 20110287333
    Abstract: The present invention relates to an electrolyte-impregnated, reinforced matrix for molten carbonate fuel cells and a manufacturing method thereof. According to the invention, the electrolyte-impregnated matrix, which comprises both the electrolyte and the reinforcing particles including a metal and an oxide, is manufactured by adding the electrolyte, as required per unit cell of a fuel cell, and the reinforcing particles including the metal and the oxide, to a slurry during the matrix preparation step, and subjecting the resulting slurry to a tape casting process. By doing so, the matrix stacking operation is facilitated, and the matrix manufacturing process is simplified. In addition, cracking caused by the difference in thermal expansion coefficient between an electrolyte sheet and the matrix can be suppressed, and thermal shock occurring during operation of the fuel cell stack can be reduced, thus improving the performance and lifetime of the fuel cell.
    Type: Application
    Filed: October 29, 2009
    Publication date: November 24, 2011
    Applicant: DOOSAN HEAVY INDUSTRIES & CONSTRUCTION CO., LTD.
    Inventors: Mi Young Shin, Bo Hyun Ryu, Hwan Moon, Ju Young Youn, Chang Sung Jun, Tae Won Lee, Kil Ho Moon
  • Patent number: 8007859
    Abstract: Disclosed herein is a method of manufacturing the electrolyte-filled cathode of a molten carbonate fuel cell. The method includes the steps of a) manufacturing an air electrode through a sintering process; b) dispersing electrolyte powder throughout one surface of the air electrode according to a composition of eutectics; c) attaching the electrolyte powder, uniformly dispersed throughout the one surface of the air electrode, to the air electrode using pressure by pressing the electrolyte powder on the air electrode at a predetermined pressure; and d) filling the air electrode with the electrolyte powder, attached to the air electrode, through heat treatment.
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: August 30, 2011
    Assignee: Boditechmed Inc.
    Inventors: Bo Hyun Ryu, Yun Sung Kim, Chang-Sung Jun, Mi Young Shin
  • Publication number: 20080157419
    Abstract: Disclosed herein is a method of manufacturing electrolyte-impregnated anode and cathode for a molten carbonate fuel cell. The method is intended to manufacture electrolyte-impregnated electrodes for controlling an electrolyte present in unit cells of a molten carbonate fuel cell by adding electrolyte powder to prepare an electrolyte slurry, which is necessary for forming electrodes, molding electrodes containing an electrolyte in an in-situ state so that they meet the specifications for the unit cells of a fuel cell stack using a tape casting method, and then sintering the electrodes. The method includes preparing electrolyte slurry, nickel slurry and organic substance slurry; mixing the electrolyte slurry with the nickel slurry and the organic substance slurry to form mixed slurry; defoaming the mixed slurry; tape-casting the mixed slurry; and drying and sintering the tape-cast slurry.
    Type: Application
    Filed: December 28, 2007
    Publication date: July 3, 2008
    Applicant: DOOSAN HEAVY INDUSTRIES & CONSTRUCTION CO., LTD.
    Inventors: Bo Hyun Ryu, Yun Sung Kim, Chang-Sung Jun, MiYoung Shin
  • Publication number: 20080160181
    Abstract: Disclosed herein is a method of manufacturing the electrolyte-filled cathode of a molten carbonate fuel cell. The method includes the steps of a) manufacturing an air electrode through a sintering process; b) dispersing electrolyte powder throughout one surface of the air electrode according to a composition of eutectics; c) attaching the electrolyte powder, uniformly dispersed throughout the one surface of the air electrode, to the air electrode using pressure by pressing the electrolyte powder on the air electrode at a predetermined pressure; and d) filling the air electrode with the electrolyte powder, attached to the air electrode, through heat treatment.
    Type: Application
    Filed: December 28, 2006
    Publication date: July 3, 2008
    Applicant: Doosan Heavy Industries & Construction Co., Ltd.
    Inventors: Bo Hyun Ryu, Yun Sung Kim, Chang-Sung Jun, Mi Young Shin