An Investigation of the Use of Polyaniline (PANI)/Chlorine-Doped Graphene Oxide (Cl-GO)/Lead(IV)Oxide Composite Electrodes in Supercapacitor Systems

Akyol A. B., Semiz N., Sevinc Y., Serim R., Akgul D., Çoban B., ...Daha Fazla

ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY, cilt.14, sa.11, 2025 (SCI-Expanded, Scopus)

Özet

Ternary composites consisting of polyaniline (PANI), chlorine-doped graphene oxide (Cl-GO), and lead dioxide (lead(IV)oxide, PbO2) were synthesized, and their use as electrode materials in asymmetric-type supercapacitors was investigated. Cl-GO was synthesized through a one-step process at room temperature using the chronoamperometric method, while PANI was prepared via chemical synthesis. Two distinct systems were fabricated using different electrolytes: 1.0 M H2SO4 for the PPGO1 system and 1.0 M KOH for the PPGO2 system. The conductive polymer and heteroatom-doped graphene oxide were characterized using spectroscopic and microscopic techniques. X-ray photoelectron spectroscopy and Fourier-transform infrared (FT-IR) analyses confirmed the successful synthesis of heteroatom-doped graphene oxide, and the FT-IR spectrum of PANI confirmed the successful formation of polyaniline. Field-emission scanning electron microscopy images of the synthesized components demonstrated that they were successfully produced. Fabricated supercapacitors were characterized using cyclic voltammetry, galvanostatic charge-discharge, and electrochemical impedance spectroscopy. At a scan rate of 10 mV s-1, the supercapacitor fabricated using the Cl-GO/PANI/PbO2 electrode exhibited specific capacitance values of 97 mF cm-2 for PPGO1 and 54 mF cm-2 for PPGO2. These results highlight the potential of this material as a promising electrode for future high-performance, fast-charging, and long-life supercapacitor applications.