Electric double layer capacitors are energy storage devices with advantages of fast charge-discharge and long life span. Surface modification activated carbon electrodes is an effective way to improve their performance. For this purpose, deoxofluorination sulfur tetrafluoride was attempted in study. Successful introduction fluorine atom on the surface resulted increased capacitance improved cou...

Theoretically, the charge/ discharge cycle life of Electric Double Layer Capacitor (EDLC) is infinite. We use electrolysis solution and it difficult to directly measure capacity or reduction rate based on solution. conducted accelerated aging tests with repeated charge/discharge for 27 days in constant-temperature bath at 60 ℃ capacitance closely related The result showed that dropped by about ...