Ceramic Separator for Electrochemcial Cells With Improved Conductivity
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United States of America Patent
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Issued Date -
Oct 9, 2008
app pub date -
Aug 19, 2004
filing date -
Oct 14, 2003
priority date (Note) -
Abandoned
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Abstract
Separator for an electrochemical cell comprising a flexible perforate carrier having a ceramic coating on and in the carrier, the ceramic coating comprising from 75 to 99 parts by mass of oxidic particles selected from particles of ZrO.sub.2, SiO.sub.2 and Al.sub.2O.sub.3 and comprising from 1 to 25 parts by mass of zeolite particles. These separators exhibit distinctly improved ion conductivity after filling with an electrolyte and are useful as separators in lithium ion batteries in particular.
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