Active carbon, production method thereof and polarizable electrode
AssigneeShowa Denko K.K.
InventorMasako Tanaka
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Abstract
The present invention relates to an active carbon containing an alkaline earth metal compound inside the particle and having a specific surface area of 10 to 2,000 m2/g, which is suitable to be used for polarizable electrodes in an electric double layer capacitor. The active carbon of the present invention enables to increase the capacitance of an electric double layer capacitor as well as to control the expansion of electrodes. The active carbon of the present invention can be obtained by adding an alkaline earth metal compound to a material such as pitch and performing heat treatment and activation.
Claims28
An active carbon comprising an alkaline earth metal compound in the inside of the particle and having a BET specific surface area of 10 to 2,000 m2/g as determined by a nitrogen adsorption method.
Dependencies are inferred from the claim text.