Activated carbon (AC) is one of the most promising active materials for high-performance supercapacitors (SCs) owing to its high specific surface area and theoretical specific capacity. In this study, oil palm empty fruit bunches (EFBs), which are agricultural residue, are employed as a precursor to produce AC using a series of cleaning, carbonization, and chemical activation processes. The as-produced AC has a specific surface area of 2774 m²/g, which is very high among AC produced from biomass materials. To enhance the performance of SCs, the AC is modified by nitrogen doping. The specific capacities of AC and nitrogen-doped AC are found to be 182 to 217 F/g, respectively, at a current density of 0.5 A/g in 6 M KOH aqueous electrolyte. We demonstrate that agricultural waste can be processed into AC with a high specific surface area for SC applications.

活性炭（AC）由于其高的比表面积和理论比容量，是用于高性能超级电容器（SC）的最有希望的活性材料之一。在这项研究中，作为农业残留物的油棕空果串（EFB）被用作通过一系列清洁，碳化和化学活化过程生产AC的前体。所生产的AC的比表面积为2774 m ²/ g，在由生物质材料生产的AC中非常高。为了增强SC的性能，通过氮掺杂对AC进行了改性。发现在6 M KOH水性电解质中，电流密度为0.5 A / g时，交流电和掺氮交流电的比容量分别为182至217 F / g。我们证明，农业废料可以被加工成具有较高比表面积的用于AC的AC。