Porous carbon materials are synthesized from pomelo valves by the hydrothermal activation of H₃PO₄ followed by simple carbonization. The as-synthesized hierarchically porous carbon electrode exhibits a high specific capacitance of 966.4 F g⁻¹ at 1 A g⁻¹ and an ultra-high stability of 95.6% even after 10 000 cycles. Moreover, the supercapacitor also demonstrates a maximum energy of 36.39 W h kg⁻¹ and a maximum power of 33.33 kW kg⁻¹ with an energy retention of 25.56 W h kg⁻¹, which paves the way for the development of high-performance, green supercapacitors for advanced energy storage systems.

中文翻译：

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用于高性能超级电容器的柚子阀水热碳化分级多孔P掺杂碳电极

多孔碳材料是由柚阀通过水热活化H ₃ PO ₄后简单碳化合成的。所合成的分级多孔碳电极在 1 A g ^-1下表现出 966.4 F g ^-1的高比电容，即使在 10 000 次循环后仍具有 95.6% 的超高稳定性。此外，该超级电容器还表现出36.39 Wh kg ^-1的最大能量和33.33 kW kg ^-1的最大功率和25.56 Wh kg -1 的能量保留，^为高性能电容器的发展铺平了道路，用于先进储能系统的绿色超级电容器。