Lotus stamen, as a traditional Chinese medicine, is rich in oxygen, sulfur, and phosphorus. In this work, we successfully developed oxygen-sulfur-phosphorus co-doped activated carbon (LSAC) from lotus stamens via a facile activation process. The as-prepared activated carbon has a large specific surface area of 1026.9 m²g⁻¹, abundant heteroatom dopants, and a hierarchical micro/meso/macroporous structure. Thanks to the above advantages, the LSAC electrode exhibits a high specific capacitance of 322.8 F g⁻¹ at 0.5 A g⁻¹ and remarkable cyclic stability, maintaining 90.2% of its initial capacitance after 10000 cycles. Moreover, the symmetric supercapacitor assembled from LSAC electrodes displays an excellent energy density of 24.1 W h kg⁻¹ at a power density of 490 W kg⁻¹.

莲心作为一种中药，含有丰富的氧、硫、磷。在这项工作中，我们通过简单的活化过程从莲花雄蕊中成功开发了氧-硫-磷共掺杂活性炭（LSAC）。所制备的活性炭具有1026.9 m ² g ^-1的大比表面积、丰富的杂原子掺杂剂和分级微/中/大孔结构。由于上述优点，LSAC 电极在 0.5 A g ^{-1 时}表现出 322.8 F g ^-1的高比电容和显着的循环稳定性，在 10000 次循环后保持其初始电容的 90.2%。此外，由 LSAC 电极组装的对称超级电容器显示出 24.1 W h kg 的优异能量密度^-1功率密度为 490 W kg ^-1。