摘要:
The capacitance of a conventional activated carbon electrode is insufficient when the capacitor is discharged in a large current. The present inventors made extensive studies to obtain a molded activated carbon electrode which can be discharged in a large current instantaneously, can be handled easily, and has an excellent impact resistance, and as a result, they found that an activated carbon electrode obtained by molding a mixture containing activated carbon, a vinylidene chloride polymer or copolymer, and an organic material to be thermally decomposed by calcining to form macropores, and a molding auxiliary if necessary, and then calcining the resulting molded material, has the most suitable macropores for ion migration to enable discharging a large current instantaneously.
摘要:
A carbonaceous material prepared by heat treating an activated carbon material below 700 °C in an alkali metal hydroxide bath has a high electrostatic capacitance, and more particularly the electrostatic capacitance per unit volume thereof is several times, or even seven times or above as high as that of a conventional activated carbon for capacitors. Thus it is possible to reduce the size of a capacitor by using this material in the production of a capacitor utilizing an electric double layer.