Patents by Inventor Soo Jo

Soo Jo 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).

  • Lithium secondary battery of electrolyte containing ammonium compounds
    Publication number: 20070003824
    Abstract: Disclosed is a lithium secondary battery using a cathode containing a lithium-containing transition metal oxide and an anode containing graphitized carbon, characterized in that an ammonium compound capable of providing ammonium ions is added to a non-aqueous electrolyte. Therefore, the present invention provides a lithium secondary battery having improved high-temperature performance by reducing decreases of residual capacity and recovery capacity resulting from high-temperature storage of the battery, via addition of such an ammonium compound.
    Type: Application
    Filed: February 13, 2006
    Publication date: January 4, 2007
    Inventors: Soo Jo, Jisang Yu, Byungchul Choi, Changjoo Han