Activated carbon for electric double layer capacitor electrode and method for producing the activated carbon
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United States of America Patent
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Mar 31, 2015
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Nov 1, 2012
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Dec 24, 2010
filing date -
Dec 28, 2009
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Abstract
The present invention provides a method for producing an activated carbon for an electric double layer capacitor, with which the wettability of a carbon material with an alkali activator is improved, thereby improving contact efficiency between the carbon material and the alkali activator and efficiently promoting reaction between the carbon material, which is a starting material and the activator. The method comprises adjusting a carbon material as it is or after having been calcined to produce a carbon powder having an average particle diameter of 0.5 to 15 μm, oxidizing the carbon powder to contain 3 percent by mass or more of oxygen, and activating the oxidized product with an alkali activator.
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