CARBON MATERIAL FOR ELECTRIC DOUBLE LAYER CAPACITOR ELECTRODE AND METHOD FOR PRODUCING THE CARBON MATERIAL
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United States of America Patent
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Issued Date -
Mar 1, 2012
app pub date -
Mar 11, 2010
filing date -
Apr 10, 2009
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Abandoned
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Abstract
The present invention provides a method for producing a carbon material for an electric double layer capacitor, having a low internal resistance and a high capacitance per unit volume. The method comprises activating a graphitizable carbon material used as the raw material with 3 or more alkali metal compounds to produce an activated carbon having a BET specific surface area of 1500 to 3000 m2/g and a pore diameter corresponding to the maximum value in the pore size distribution as determined by the MP method within the range of 1 to 2 nm.
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