Akademik Veri Yönetim Sistemi
SYNTHETIC METALS, cilt.317, ss.1, 2025 (SCI-Expanded, Scopus)
Conductive polymers are primarily organic compounds, and their chemical synthesis is relatively straightforward and cost-effective. This characteristic contributes to a reduction in the overall cost of energy storage systems and facilitates their large-scale production. Through suitable modifications and the incorporation of dopants, the energy storage capacity of these materials can be enhanced, potentially increasing their efficiency when compared to conventional battery technologies. This study employed a single-step electrochemical coating technique to polymerize the Polythiophene (PTh) conducting polymer. Phytocyanin (H2Pc), Nickel (II) phthalocyanine (NiPc), and Nickel (II) phthalocyanine-tetra sulfonic acid tetrasodium salt (NiTSPc) derivatives were included as dopants in the polymerization process to enhance the performance of the supercapacitor electrode made from polythiophene. Pure polythiophene typically has low specific capacitance and a limited cycle life, limiting its overall energy storage capacity. The coating containing nickel (II) phthalocyanine-tetra sulfonic acid tetrasodium salt demonstrated the highest specific capacitance. The half-cell system has a maximum capacitance of 366.5 F g−1 at the scan rate of 5 mV s−1. Galvanostatic charge/discharge experiments revealed a 31.8-fold increase in performance over pure polythiophene. Using the same electrodes, the maximum energy and power density of the symmetric supercapacitor were determined as 0,0142 Wh/kg and 16 W/kg, respectively. The symmetrical supercapacitor exhibits a capacitance retention of 90.4 % after 5000 cycles.