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Batteries Digest Newsletter and Website are Copyright 1996-2007 by Teksym Corporation
Batteries/Lead-acid/Chemistry 070529
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 (May 2007) Firefly Energy selects NorthStar Battery as first contract battery manufacturing partner for carbon-graphite foam batteries.  The contract has been executed to enable prototype and production support of Firefly’s “3D” battery technology to serve the U.S. Army.  

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 Is Antimony Poisoning Still an Issue?
Antimony, added to the lead plates to facilitate casting, produces an ion migration resulting in a continuing reduction of end-of-charge Voltage of about 0.2 Volts. Test information shows the antimony poisoning to be reduced with  rubber separators, so using a combination of analytical steps, Daramic, LLC produced a new material which has the antimony retardation of rubber, while maintaining the other superior performance properties of polyethylene separators. The material produces a cell which has an end of charge current below that of a rubber separator and three times less than that of a nonactive separator.
The Battery Man, June 2005, pp. 28-31