| 摘要 |
PURPOSE:To improve the utilization of a surface area, and to obtain large electrical double layer capacitance by using a porous carbon group material, the quantity of alkali-reactive groups on the surface of which is increased, as a polarizable electrode. CONSTITUTION:Carbonized carbon fiber cloth is oxidized in air, thus acquiring cloth. Total quantity of alkali-reactive groups per the surface area of cloth is represented by 2.0mueq/m<2>, and electrical double layer capacitance per the surface area is represented by 26.7muF/cm<2> when an electrolyte as a 4N H2SO4 aqueous solution is used, and represented by 9.9muF/cm<2> when a IN lithium perchlorate solution dissolved into the mixed solution of propylene carbonate and ethylene glycol dimethyl ether is employed as an organic group electrolyte. That is, a porous carbon group material, total quantity of alkali-reactive groups of which extends over 0.45mueq/m<2> or more to the overall surface area, is used as a polarizable electrode, thus improving the utilization of the surface area, then obtaining the large electrical double layer capacitance per the unit surface area. |
