High temperature electrochemical cell with molten alkali metal anode
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United States of America Patent
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Dec 28, 1999
Grant Date -
N/A
app pub date -
Feb 6, 1998
filing date -
Feb 6, 1997
priority date (Note) -
Expired
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Abstract
An electrochemical cell comprises a housing defining an interior space, and a separator in the housing dividing said space into an anode compartment and a cathode compartment. A sodium anode is in the anode compartment, a cathode being in the cathode compartment, electrochemically coupled by the separator to the anode. The anode is molten, the separator being a conductor of sodium cations and comprising at least 5 tubes having open and closed ends, the cathode being in the tubes and each tube communicating with a header space in an electronically insulating header. The relationship of the combined area of the tubes available for sodium conduction, and the volume of the interior space, as defined by the quotient: ##EQU1## (in which l is a unit length), has a value of at least 1.0 l.sup.-1.
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