Plasma-assisted conversion of wood into graphitic carbon for supercapacitor electrodesŽekar, Jan (Avtor) Milanič, Matija (Mentor) Santhosh, Neelakandan Marath (Komentor) plasma treatmentcarbonizationgraphitic carbonsupercapacitorPlasma treatment is a pivotal technology for synthesizing enriched, high-performance materials for various applications, including energy storage. Biomass waste is a renewable, abundant, and cost-effective precursor for plasma-based carbonization to produce graphitic carbon. In this work, the structural mechanisms behind biomass carbonization are explored in relation to its chemical composition. The fundamental effects of plasma treatment, etching, carbonization, and surface deposition are detailed, followed by a justification for utilizing radiofrequency (RF) plasma. To evaluate the application of the graphitic carbon as an energy storage medium, supercapacitors are investigated and directly compared to conventional batteries, highlighting the connection between electrode material properties and charge storage mechanisms. The experimental methodology encapsulates wood drying, RF plasma carbonization, and surface deposition. Structural and morphological properties were evaluated using Raman spectroscopy and Scanning Electron Microscopy (SEM). Electrochemical performance was assessed in a three-electrode configuration using cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and long-term cycling stability tests. The results demonstrate that carbonized inner wood clearly outperforms carbonized bark. Furthermore, H2S-treated carbonized inner wood positioned at the center of the induction coil exhibited the highest electrochemical performance, while Raman spectroscopy and SEM revealed an amorphous structure and high porosity. The specific capacitance was measured using the three-electrode system at 104 F/g at a current density of 1 A/g with a capacitance retention of 64.7% after 10000 cycles at 5 A/g. The study also identified several challenges and outlined future directions for advanced research, which were discussed in detail.20262026-09-23 08:15:17Zaključna naloga188448VisID: 165173COBISS_ID: 293140483sl