IMPROVEMENT OF ELECTRODE/ELECTROLYTE INTERFACE RESISTANCE AT ACTIVATED CARBON/DNA COMPOSITE ELECTRODES FOR AQUEOUS EDLC

摘要

Activated carbon electrode shows a high resistance in an aqueous electrolyte because activated carbon has an insufficient affinity for an aqueous electrolyte. In addition, fluorinated polymer material typically acting as a binder for electric double layer capacitor (EDLC) electrodes also has a poor affinity for aqueous electrodes. There is, therefore, a considerable resistance at an electrode/electrolyte interface in an aqueous EDLC. In this work, we found that activated carbon/DNA composite electrodes improve their rate capability and enhance their discharge capacitance in the 3.5 M NaBr electrolyte.