HIGH DENSITY ELECTRODE MADE MAINLY OF SPHERICAL ACTIVATED CARBON AND ELECTRIC DOUBLE LAYER CAPACITOR

摘要

PROBLEM TO BE SOLVED: To provide a high density electrode with high electrostatic capacity per volume and low resistance as an electrode in an electric double layer capacitor. SOLUTION: A high density electrode contains spherical activated carbon of 50 to 95 wt.% with average grain size of 1 to 10 μm and minute hole volume of 1.5 cm3/g or below, conductivity applying material of 30 wt.% or below, and polymer combining material of 0.5 to 20 wt.%. Then, an electric double layer capacitor with apparent density of 0.6 g/cm3 or above is obtained.