Abstract
This study introduces a novel biochar-geopolymer composite (BGC) electrode designed for structural supercapacitors. Employing a one-part geopolymer system with varying biochar volume fractions, BGC electrodes were fabricated, and their electrochemical performance was assessed. The BGC electrode with a 70 % composition demonstrated enhanced dispersion of biochar, leading to significantly improved electrochemical performance, which was shown as increased peak-measured current and capacitance. The experimental results validate the feasibility of directly mixing biochar with geopolymer binder to create multifunctional supercapacitor electrodes. Promising results demonstrate the potential usage of biochar as a sustainable supercapacitor material.
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