Abstract A successful transformation of Datura metel seed pod into activated carbon (AC) codoped with nitrogen (N) and sulfur (S) contents have opened up a new route in this process which turned the material to be source material for supercapacitor application. The appropriate proportion of KOH with raw material and the activation condition were the key factors in this conversion process. The conversion of Datura metel seed pod into AC has opened the possibility of the material for supercapacitor application. HRSEM/EDX with elemental mapping and XPS analysis evidenced the morphologies and codoped surface functionalities. XRD, Raman spectra and N2 adsorption/desorption isotherm analysis were studied. The activation temperature 600 °C for 1 h with 30 wt% of KOH resulting the surface area of the derived AC (DM 3) is found to be 795.4857 m2/g. The codoped surface functionalities have led to a significant specific capacitance of 340 F/g at a current density of 1 A/g. The novel material exhibits excellent cycling stability with 95.24% capacitance retention at 1 A/g for 3000 cycles proved to be an excellent electrode material for energy storage especially for supercapacitor application.

中文翻译：

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源自 Dautra metel 种子荚的 N、S 共掺杂活性介孔碳作为超级电容器的活性电极

摘要 曼陀罗种子荚成功转化为共掺氮（N）和硫（S）的活性炭（AC）开辟了该过程的新途径，使该材料成为超级电容器应用的原材料。KOH与原料的适当比例和活化条件是该转化过程的关键因素。曼陀罗种子荚转化为交流电为超级电容器应用开辟了材料的可能性。具有元素映射和 XPS 分析的 HRSEM/EDX 证明了形态和共掺杂表面功能。研究了XRD、拉曼光谱和N2吸附/解吸等温线分析。活化温度为 600 °C 1 小时，含有 30 wt% 的 KOH，结果衍生的活性炭 (DM 3) 的表面积为 795.4857 m2/g。共掺杂的表面官能团在 1 A/g 的电流密度下产生了 340 F/g 的显着比电容。这种新型材料表现出优异的循环稳定性，在 1 A/g 下 3000 次循环的电容保持率为 95.24%，被证明是一种优异的储能电极材料，尤其是超级电容器应用。