Optimized microporous structure of electrochemical cells
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United States of America Patent
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Dec 4, 2012
Grant Date -
Dec 20, 2007
app pub date -
Jun 18, 2007
filing date -
Jun 16, 2006
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Abstract
An optimized electrochemical cell comprised of a housing divided into two chambers, a first chamber containing a protogenous, ion-conducting liquid and a positive high density electrode including a first active material and a porous binder, surrounded by a surface in which the porosity level increases towards the surface, a second chamber containing an aprotic, ion conducting liquid and a negative high density electrode including a second active material and a porous binder, surrounded by a surface in which the porosity level increases towards the surface. A symmetric, strong, highly porous, microporous polymer membrane divides the housing into the first and second chamber. The porosity level of the polymer membrane is 25% greater than the porosity level at the surface of the positive and negative high density electrodes.
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