Patents by Inventor Yong Min Choe

Yong Min Choe 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).

  • Method for making electrode of lithium secondary cells
    Patent number: 6187476
    Abstract: A method for making an electrode for lithium secondary cells. Lithium and cobalt ions are co-precipitated in an alkaline solution in such a way that the ratio of the former to the latter is 1.05:1 or more and then, are thermally treated to give LiCoO2 powder. This ternary system compound is combined with a current collector and a binder. The electrode has an initial discharge capacity of 160 mAh/g and retains 90% of the initial capacity even after 400 times of charge/discharge cycle.
    Type: Grant
    Filed: January 14, 1998
    Date of Patent: February 13, 2001
    Assignee: Korean Advanced Institute of Science and Technology Representative
    Inventors: Su Il Pyun, Yong Min Choe