With the advancement in technology, the demand for energy storage devices is enormous across various sectors, including medical equipment, electric vehicles, renewable energy systems, and consumer electronics. In response to this pressing need, significant research is currently being pursued to produce porous carbon from agriculture residue (e.g., corn stover, rice husk, wheat, etc.) as an alternative to traditional petroleum-derived carbon materials, such as graphite, graphene, and carbon black. This renewable carbon resource demonstrates promising characteristics for supercapacitor applications, offering enhanced sustainability and a reduced carbon footprint. However, challenges persist that hinder commercialization, particularly its lower capacitance and disorganized porosity, which adversely affect charge storage capacity and overall electrochemical performance. To address these limitations, our research investigates the effectiveness of applying a conductive polymer layer to agriculture-based porous carbon, aiming to enhance its conductivity and electrochemical properties. Characterization techniques such as Fourier-transform infrared spectroscopy (FTIR), Raman spectroscopy, scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS) are employed to analyze the structural and compositional changes in the modified carbon material. Additionally, electrochemical testing results that demonstrate notable improvements in capacitance and charge-discharge efficiency following the polymer coating onto porous carbon will be presented.
