Natural polyphenol-derived hierarchically porous carbon materials as electrode materials for supercapacitors
발표자
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초록
내용
In this study, we present an eco-friendly synthetic strategy of porous carbon materials (PCMs) using tannic acid (TA), a natural polyphenol, as a carbon precursor, and potassium carbonate (K2CO3) as an activation agent. Aqueous solutions containing TA (5 g) and various amounts of K2CO3 (1, 5, 10 g) in 50 mL of DI water were subjected to ice-templating followed by carbonization at 800 °C under a nitrogen atmosphere to fabricate PCMs. Comprehensive characterization of the PCMs revealed high specific surface area and hierarchical pore structures, which are pivotal for advanced energy storage applications. Electrochemical assessment showed excellent electrochemical performance of the PCM-based electrode, demonstrating high specific capacitance and exceptional cycle stability. This study highlights that the use of TA and mild activation agents enables the fabrication of high-performance supercapacitors through an eco-friendly and facile fabrication process.