Patents Assigned to Texaco Ovonic Battery Systems, LLC
  • Patent number: 7201857
    Abstract: A conductive additive for the positive nickel electrode for electrochemical cells which provides increased performance by suppressing an oxygen evolution reaction occurring parallel to the oxidation of nickel hydroxide, increasing conductivity of the electrode and/or consuming oxygen produced as a result of the oxygen evolution reaction.
    Type: Grant
    Filed: May 2, 2003
    Date of Patent: April 10, 2007
    Assignee: Texaco Ovonic Battery Systems, LLC
    Inventors: Stanford R. Ovshinsky, Boyko Aladjov, Srinivasan Venkatesan, Bora Tekkanat, Meera Vijan, Hong Wang, Subhash K. Dhar
  • Patent number: 6969567
    Abstract: A rechargeable multi-cell battery including a plurality of electrochemical cells. Each of the cells includes a gas port that allows passage of cell gases into and out of the cell but prevent passage of cell electrolyte out of the cell. The gas port may be a gas permeable membrane. The multi-cell batter may be a bipolar battery.
    Type: Grant
    Filed: November 6, 2000
    Date of Patent: November 29, 2005
    Assignee: Texaco Ovonic Battery Systems, LLC
    Inventors: Lin R. Higley, Marshall D. Muller, Dennis A. Corrigan
  • Patent number: 6830725
    Abstract: Electrochemical and thermal hydrogen storage alloy compositions that provide superior performance, including an electrochemical hydrogen storage alloy that provides superior low temperature discharge characteristics. The alloy compositions include microstructures in the interface region that are highly porous and that include catalytic metallic particles. The microstructures include a large volume fraction of voids having spherical or channel-like shapes and are sufficiently open structurally to facilitate greater mobility of reactive species within the microstructure and in the vicinity of catalytic metallic particles. Greater accessibility to reactive sites accordingly results. The greater mobility of reactive species and/or the greater density of catalytic particles lead to faster kinetics and improved performance (e.g. higher power), especially at low operating temperatures.
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: December 14, 2004
    Assignee: Texaco Ovonic Battery Systems, LLC
    Inventors: Michael A. Fetcenko, Stanford R. Ovshinsky, Kwo Young, Benjamin Reichman, Taihei Ouchi, John Koch, William Mays