Patents by Inventor Duyoung Choi

Duyoung Choi 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).

  • Electrochemical Devices Comprising Compressed Gas Solvent Electrolytes
    Publication number: 20200185777
    Abstract: Disclosed are novel electrolytes, and techniques for making and devices using such electrolytes, which are based on compressed gas solvents. Unlike conventional electrolytes, disclosed electrolytes are based on “compressed gas solvents” mixed with various salts, referred to as “compressed gas electrolytes.” Various embodiments of a compressed gas solvent includes a material that is in a gas phase and has a vapor pressure above an atmospheric pressure at a room temperature. The disclosed compressed gas electrolytes can have wide electrochemical potential windows, high conductivity, low temperature capability and/or high pressure solvent properties. Examples of a class of compressed gases that can be used as solvent for electrolytes include hydrofluorocarbons, in particular fluoromethane, difluoromethane, tetrafluoroethane, pentafluoroethane. Also disclosed are battery and supercapacitor structures that use compressed gas solvent-based electrolytes, techniques for constructing such energy storage devices.
    Type: Application
    Filed: February 18, 2020
    Publication date: June 11, 2020
    Inventors: Cyrus Rustomji, Sungho Jin, Taekyoung Kim, Jungmin You, Joseph Wang, Duyoung Choi
  • Electrochemical devices comprising compressed gas solvent electrolytes
    Patent number: 10608284
    Abstract: Disclosed are novel electrolytes, and techniques for making and devices using such electrolytes, which are based on compressed gas solvents. Unlike conventional electrolytes, disclosed electrolytes are based on “compressed gas solvents” mixed with various salts, referred to as “compressed gas electrolytes.” Various embodiments of a compressed gas solvent includes a material that is in a gas phase and has a vapor pressure above an atmospheric pressure at a room temperature. The disclosed compressed gas electrolytes can have wide electrochemical potential windows, high conductivity, low temperature capability and/or high pressure solvent properties.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: March 31, 2020
    Assignee: The Regents of the University of California
    Inventors: Cyrus Rustomji, Sungho Jin, Taekyoung Kim, Jungmin You, Joseph Wang, Duyoung Choi
  • ELECTROCHEMICAL DEVICES COMPRISING COMPRESSED GAS SOLVENT ELECTROLYTES
    Publication number: 20160261005
    Abstract: Disclosed are novel electrolytes, and techniques for making and devices using such electrolytes, which are based on compressed gas solvents. Unlike conventional electrolytes, disclosed electrolytes are based on “compressed gas solvents” mixed with various salts, referred to as “compressed gas electrolytes.” Various embodiments of a compressed gas solvent includes a material that is in a gas phase and has a vapor pressure above an atmospheric pressure at a room temperature. The disclosed compressed gas electrolytes can have wide electrochemical potential windows, high conductivity, low temperature capability and/or high pressure solvent properties.
    Type: Application
    Filed: November 17, 2014
    Publication date: September 8, 2016
    Inventors: Cyrus Rustomji, Sungho Jin, Taekyoung Kim, Jungmin You, Joseph Wang, Duyoung Choi