Current collector to conduct an electrical current to or from an electrode layer
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United States of America Patent
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Nov 11, 2008
Grant Date -
Jun 15, 2006
app pub date -
Dec 9, 2004
filing date -
Dec 9, 2004
priority date (Note) -
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Abstract
A current collector and method of forming the same in which a slurry is prepared that contains electrically conductive particles having surface deposits of a metallic oxide on a metal or metal alloy conductor that has a lower weight percentage of the electrically conductive particles than the metal or metal alloy. The slurry is applied to a structure that contains an electrolyte and electrode layers. The resultant coated form is then fired to partly sinter the electrically conductive particles and thereby to obtain porous current collector layers affixed to the electrode layers. The current collector of the present invention is between about 5 microns and about 100 microns thick and preferably has a porosity of between about 10 percent and about 70 percent with pores having a pore size of between about 0.1 microns and about 20 microns.
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