Patents by Inventor Andrew C. Chu

Andrew C. Chu 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 cell with high charge and discharge rate capability
    Patent number: 7261979
    Abstract: A high capacity, high charge rate lithium secondary cell includes a high capacity lithium-containing positive electrode in electronic contact with a positive electrode current collector, said current collector in electrical connection with an external circuit, a high capacity negative electrode in electronic contact with a negative electrode current collector, said current collector in electrical connection with an external circuit, a separator positioned between and in ionic contact with the cathode and the anode, and an electrolyte in ionic contact with the positive and negative electrodes, wherein the total area specific impedance for the cell and the relative area specific impedances for the positive and negative electrodes are such that, during charging at greater than or equal to 4C, the negative electrode potential is above the potential of metallic lithium.
    Type: Grant
    Filed: March 9, 2005
    Date of Patent: August 28, 2007
    Assignee: A123 Systems, Inc.
    Inventors: Antoni S. Gozdz, Andrew C. Chu, Yet Ming Chiang, Gilbert N. Riley, Jr.