ACTIVE CARBON FOR ELECTRIC DOUBLE LAYER CAPACITOR, ACTIVE CARBON ELECTRODE FOR ELECTRIC DOUBLE LAYER CAPACITOR AND ELECTRIC DOUBLE LAYER CAPACITOR UTILIZING THE SAME

摘要

It provides an electric double layer capacitor with excellent cycle characteristics that can obtain high capacitance by applying low voltage.;1 kg of mesocarbon microbeads having a particle diameter of 25 µm are heated in a nitrogen atmosphere at 8000 C for 2 hours to be carbonized, and cooled to room temperature. The carbide of the mesocarbon microbeads and the sodium hydroxide powder are mixed in a weight ratio of 1: 2.5, heated at 600 ° C. for 1 hour in a helium atmosphere, and the carbide is exposed to sodium vapor for alkali activation. After cooling to room temperature, 8 g of this carbon powder, 1 g of Ketjen black, and 1 g of polytetrafluoroethylene were kneaded and rolled into a sheet shape having a thickness of 0.5 mm, and the sheet carbon material was changed. The activated carbon layer 3, which was punched out at a diameter of 16 mm, was used as the polarizing electrode 4 together with the current collector layer 2, and the polarizable electrode 4 and the separator 1 were combined to form an organic electrolyte solution. Impregnated to produce an electric double layer capacitor (A).;Mesocarbon Micro Beads, Electrical Double Layer Capacitors