Surface-Modified Carbon Synthesized from Palm Kernel Shell for Electric Double-Layer Capacitor Applications

Abstract:

This research was conducted to study changes in functional groups after oxidation of porous carbon synthesized from palm kernel shell and their effects on the performance of material for an electric double-layer capacitor (EDLC). Porous carbon was prepared by pyrolysis of palm kernel shell at a temperature of 800 °C and steam activation. Surface modification was conducted by oxidation porous carbon using hydrogen peroxide (H₂O₂). Properties of material were characterized using N₂-sorption analysis, scanning electron microscopy (SEM), and Fourier transforms infrared spectroscopy (FTIR) analysis. Measurement of biomass-based porous carbon as an electrode for EDLC was carried out using cyclic voltammetry and galvanostatic charge-discharge methods. The test was conducted using a three-electrode system, with carbon as the working electrode, Ag/AgCl as the reference electrode, Pt as the auxiliary electrode. The electrolyte used was 1 M H₂SO₄ solution. The results showed that oxidation of porous carbon using H₂O₂ lowers the specific surface area but increases oxygen functional groups in the carbon surface. The results on testing the performance of EDLC, surface-modified carbon showed better EDLC performance of 5-7 times higher compared to carbon before oxidation.

• Periodical: Key Engineering Materials (Volume 884)
• Pages: 423-429
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.884.423
• Online since: May 2021
• Authors: Muhammad Iqbal Al Fuady*, Rochmadi Rochmadi, Imam Prasetyo, Teguh Ariyanto
• Keywords: Cyclic Voltammetry, EDLC, Galvanostatic Charge-Discharge, Oxidation, Porous Carbon

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