Activated carbon (AC) was synthesized from banana peel by treatment of the dried, and powdered peel using a one-step chemical activation process with an aim of improving the electrochemical performance of the electrodes fabricated using this AC. Here we investigate the pyrolysis of different types of banana peel waste in order to develop a reliable platform for energy storage as well as waste management. The work comprises of designing a supercapacitor utilizing the as-synthesized AC as the electrode material with 2 M KOH as the electrolyte. The results showed that the electrode delivered a specific capacitance value of 227 F g^-1 at 1 A g^-1 current density and maintained a value of 155.5 F g^-1 at a current density of 10 A g^-1 when used in a three-electrode system. Moreover, the fabricated electrode showed excellent cyclic stability with capacitance retention of ∼97% for 5000 cycles. The AC material showed an outstanding rate performance in a symmetrical two-electrode full cell configuration with an operating potential window of 0–1 V using 2 M KOH electrolyte. The fabricated symmetric cell showed a maximum energy density of 7 Wh kg⁻¹at a power density of 250 W kg⁻¹. The banana peel derived AC exhibits capacitance behavior and thus have the capability of broadening the electrode materials horizon and also provide broad prospect in various specialized applications.

活性炭（AC）是由香蕉皮通过一步化学活化过程处理干燥的粉末状果皮合成的，目的是提高使用这种活性炭制造的电极的电化学性能。在这里，我们研究了不同类型香蕉皮废物的热解，以开发一个可靠的能量储存和废物管理平台。该工作包括设计一个超级电容器，利用合成的 AC 作为电极材料，以 2 M KOH 作为电解质。结果表明，在电极传送227 F G的特定电容值^-1在1A克^-1的电流密度和维持的155.5 F G的值^-1在电流密度10A克^-1在三电极系统中使用时。此外，所制造的电极显示出优异的循环稳定性，5000 次循环后电容保持率约为 97%。AC 材料在对称的双电极全电池配置中显示出出色的倍率性能，使用 2 M KOH 电解质，工作电位窗口为 0-1 V。制造的对称电池在250 W kg ^-1的功率密度下显示出7 Wh kg ^-1的最大能量密度。香蕉皮衍生的交流电表现出电容行为，因此具有拓宽电极材料视野的能力，也为各种专业应用提供了广阔的前景。