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<p>This work investigates the sustainable change of banana peels (<i>Musa sapientum</i>) to activated carbon (BPAC), addressing environmental and economic challenges. Surface and morphological characterization of BPAC was conducted using diffraction analysis (XRD), XPS, IR spectroscopy (FTIR), field emission scanning electron microscopy (FE-SEM), and Raman spectroscopy. The material underwent DC glow discharge/cold plasma treatment for 20&#xa0;min at 450&#xa0;V in both oxygen and air atmospheres. Electrochemical testing in 2&#xa0;M KOH electrolyte showed that air-treated banana peel activated carbon (BPAC) achieved a good specific capacitance of 976 F/g at 0.5&#xa0;mA&#xa0;g⁻<sup>1</sup>,&#xa0;with 78.4% retention over 5000 cycles. Plasma treatment significantly enhanced the BPAC properties, demonstrating potential as a cost-effective, sustainable adsorbent and providing novel avenues for repurposing fruit waste into high-value materials.</p>

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Enhancement of activated carbon from banana peel decay using cold plasma for improved supercapacitor performance

  • 期刊论文

  • 发表日期：

    2026年6月26日

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  • K. C. Sowmiya,
  • K. A. Vijayalakshmi

摘要

This work investigates the sustainable change of banana peels (Musa sapientum) to activated carbon (BPAC), addressing environmental and economic challenges. Surface and morphological characterization of BPAC was conducted using diffraction analysis (XRD), XPS, IR spectroscopy (FTIR), field emission scanning electron microscopy (FE-SEM), and Raman spectroscopy. The material underwent DC glow discharge/cold plasma treatment for 20 min at 450 V in both oxygen and air atmospheres. Electrochemical testing in 2 M KOH electrolyte showed that air-treated banana peel activated carbon (BPAC) achieved a good specific capacitance of 976 F/g at 0.5 mA g⁻1, with 78.4% retention over 5000 cycles. Plasma treatment significantly enhanced the BPAC properties, demonstrating potential as a cost-effective, sustainable adsorbent and providing novel avenues for repurposing fruit waste into high-value materials.