Supercapacitors based on carbon foams
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United States of America Patent
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Nov 9, 1993
Grant Date -
N/A
app pub date -
Jan 17, 1992
filing date -
Jan 17, 1992
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Abstract
A high energy density capacitor incorporating a variety of carbon foam electrodes is described. The foams, derived from the pyrolysis of resorcinol-formaldehyde and related polymers, are high density (0.1 g/cc-1.0 g/cc) electrically conductive and have high surface areas (400 m.sup.2 /g-1000 m.sup.2 /g). Capacitances on the order of several tens of farad per gram of electrode are achieved.
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