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Degenerate doping of metallic anodes

United States Patent

May 12, 2015
View the Complete Patent at the US Patent & Trademark Office
Embodiments of the invention relate to an electrochemical cell comprising: (i) a fuel electrode comprising a metal fuel, (ii) a positive electrode, (iii) an ionically conductive medium, and (iv) a dopant; the electrodes being operable in a discharge mode wherein the metal fuel is oxidized at the fuel electrode and the dopant increases the conductivity of the metal fuel oxidation product. In an embodiment, the oxidation product comprises an oxide of the metal fuel which is doped degenerately. In an embodiment, the positive electrode is an air electrode that absorbs gaseous oxygen, wherein during discharge mode, oxygen is reduced at the air electrode. Embodiments of the invention also relate to methods of producing an electrode comprising a metal and a doped metal oxidation product.
Friesen; Cody A. (Fort McDowell, AZ), Zeller; Robert A. (Scottsdale, AZ), Johnson; Paul B. (Phoenix, AZ), Switzer; Elise E. (Napa, CA)
Fluidic, Inc. (Scottsdale, AZ)
14/ 044,813
October 2, 2013
STATEMENT OF GOVERNMENT INVOLVEMENT All publications, patents, and patent applications cited in this Specification are hereby incorporated by reference in their entirety. This invention was made with U.S. government support under Contract No. DE-AR-00000038 awarded by the Department of Energy. The government has certain rights in the invention.