| Popis: |
The graphene based supercapacitors with PEDOT:PSS, a conducting polymer as the binder, were fabricated on gold coated stainless steel sheets. The performance of the devices with graphene+PEDOT:PSS composite was found to be better than that of pristine graphene, indicating that PEDOT:PSS is aiding in the conductivity of the active material, unlike other insulating polymer binders. Coin cell supercapacitors with specific capacitance of about 15 F/g were fabricated. Fast charging and discharging and high specific capacitance retention of about 90 % upto 40 cycles were observed. Turning ON of red and green LEDs could be demonstrated using two coin cells connected in series. |
