Computer Science
Scientific paper
Dec 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989sert.conf...51t&link_type=abstract
In NASA, Lewis Research Center, Space Electrochemical Research and Technology (SERT), 1989 p 51-60 (SEE N90-20454 13-44)
Computer Science
Electrochemical Cells, Electrodes, Fabrication, Kinetics, Lunar Soil, Molten Salts, Solid Electrolytes, Storage Batteries, Current Density, Flux Density, Hydrogen, Lithium, Lithium Alloys, Oxygen, Refining, Zirconium Oxides
Scientific paper
Electrochemical cells have been fabricated for the simultaneous generation of oxygen and lithium from a Li2O containing molten salt (Li2O-LiCl-LiF). The cell utilizes an oxygen vacancy conducting solid electrolyte, yttria-stabilized zirconia (YSZ), to effect separation between oxygen evolving and lithium reduction half-cell reactions. The cell, which operates at 700 to 850 C, possesses rapid electrode kinetics at the lithium-alloy electrode with exchange current density (i sub o) values being greater than 60mA sq cm. When used in the electrolytic mode, lithium produced at the negative electrode would be continuously removed from the cell for later use (under lunar conditions) as an easily storable reducing agent (compared to H2) for the chemical refining of lunar ores. Because of the high reversibility of this electrochemical system, it has also formed tha basis for the lithium oxygen secondary battery system which possesses the highest theoretical energy density yet investigated.
Kuchynka Daniel J.
Sammells Anthony F.
Tsai Kan J.
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