Activated carbon material, and production method and use thereof

Abstract

An activated carbon material having a BET specific surface area of 10 to 1,000 m 2 /g as measured by means of a nitrogen adsorption method, and the ratio of the height of the D peak (1,360 cm −1 ) of a Raman spectrum of the activated carbon material to that of the G peak (1,580 cm −1 ) of the Raman spectrum is 0.8 to 1.2. When the activated carbon material of the present invention is used as a polarizable electrode material of an electric double layer capacitor, high capacitance per electrode is attained without application of excessive voltage.

1 . An activated carbon material having a fibrous material fused onto at least a portion of the surface of the activated carbon material. 
     
     
         2 . The activated carbon material as claimed in  claim 1 , which assumes a spherical shape. 
     
     
         3 . A polarizable electrode comprising, as an electrode material, an activated carbon material as recited in  claim 1 . 
     
     
         4 . An electric double layer capacitor comprising a polarizable electrode as recited in  claim 1 . 
     
     
         5 . A polarizable electrode material comprising vapor grown carbon fiber and an activated carbon material, wherein BET specific surface area of the activated carbon material is 10 to 1,000 m 2 /g and the ratio of the height of the D peak (1,360 cm −1 ) of a Raman spectrum of the activated carbon material to that of the G peak (1,580 cm −1 ) of the Raman spectrum of the activated carbon material is 0.8 to 1.2, wherein the vapor grown carbon fiber is fused onto at least a portion of the surface of the activated carbon material.