Comparison between PEDOT:PSS and Carbon Pastes for Preparing Flexible Electrodes of Supercapacitors
Journal
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
Journal Volume
11
Journal Issue
12
Date Issued
2022
Author(s)
Abstract
We compare screen-printed flexible reduced graphene oxide(rGO)-chitosan(CS) supercapacitors (SCs) prepared using poly(3, 4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) pastes and carbon pastes (CPs). SCs with PEDOT:PSS (PEDOT:PSS/rGO-CS SCs) exhibit a higher pseudocapacitance (PC) than do those with CP. Plasma treatment damages the electrodes and lowers the specific capacitance of SCs. In a galvanostatic charge-discharge (GCD) test with a constant current of 0.25 mA, PEDOT:PSS/rGO-CS and CP/rGO-CS SCs respectively show a maximum specific capacitance of 14.70 mF cm−2 and 4.63 mF cm−2. PEDOT:PSS/rGO-CS and CP/rGO-CS SCs both show excellent performance in the stability and bending tests. With a 5,000-cycle cyclic voltammetry (CV) test, the capacitive retention rates are more than 97%. No degradation is observed for both PEDOT:PSS/rGO-CS and CP/rGO-CS SCs bent with a bending radius of 0.5 cm.
Subjects
PEDOT; PSS; Carbon pastes; Supercapacitors; Flexible Electronics; REDUCED GRAPHENE OXIDE; ENERGY; CAPACITANCE; RESTACKING
Publisher
ELECTROCHEMICAL SOC INC
Type
journal article