Electrochemical cell having an electrode of silver vanadium oxide coated to a current collector
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United States of America Patent
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Sep 28, 2004
Grant Date -
Oct 23, 2003
app pub date -
Dec 10, 2001
filing date -
Dec 15, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention is directed to an SVO electrochemical cell having high rate capability. The cathode is produced by coating a mixture of an active material, conductive additives, a mixed binder, and an aluminum foil current collector. The mixed binder consists of a mixture of heat treated polyamic acid with PVDF. The use of heat treated polyamic acid maintains adhesion to the conductive current collector while the PVDF portion of the binder gives flexibility. A particularly preferred couple is of a lithium/silver vanadium oxide (Li/SVO) chemistry and the binder mixture enables an active slurry of SVO to be coated onto a current collector without delamination.
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