Solid electrolyte for an electrochemical cell composed of an inorganic metal oxide network encapsulating a liquid electrolyte
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United States of America Patent
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Mar 20, 2001
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N/A
app pub date -
Aug 21, 1998
filing date -
Aug 22, 1997
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Expired
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Abstract
A solid polymer electrolyte for an electrochemical cell is prepared by a sol-gel process in which an active metal ion conducting liquid electrolyte, e.g. a lithium-ion electrolyte, containing a salt which is stable in the presence of water, e.g. lithium bisperfluoroethanesulfonimide, LiN(SO.sub.2 C.sub.2 F.sub.5).sub.2, is admixed in aqueous solution with an alkoxide, e.g. silica alkoxide, to form a liquid precursor which is added to the electrochemical cell between the anode and cathode thereof and allowed to solidify in situ to form the solid electroyte.
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