| 摘要 |
PROBLEM TO BE SOLVED: To increase electric double layer capacity by clarifying the elements governing static density of activated charcoal by baking vinyl chloride-based resin and then activating alkali. SOLUTION: At first, vinyl chloride-based resin is baked and carbonized, and it is desired to give a temperature of more than 2000 deg.C for the baking which is higher than the first stage weight decrease start temperature by heat analysis. This carbonized matter is activated with alkali and activated charcoal for electrode can be created but potassium hydroxide is best suited as an activating agent to be used for alkali activation. Also, activating temperature of 500 to 1000 deg.C and activating time of 1 to 20 hours are desired. The activated charcoal thus obtained is able to improve the weight static density of electrode when used in a capacitor if the mode of pore distribution is located between 10 and 20 angstrom. |
