Nitrogen‐doped (N‐doped) activated porous carbon has been successfully prepared, using blueberry peel (BP) as a carbon source and melamine as a nitrogen source through a simple and effective carbonization and activation process. The obtained ABP‐1.5‐700 (ABP‐x‐y, ABP: blueberry peel derived activated porous carbon; x: BP/melamine mass ratio; y: carbonization temperature), with a nitrogen doping content of 8.29 at % presented a maximum specific capacitance of 324.3 F g⁻¹ at a current density of 1 A g⁻¹ in 6 M potassium hydroxide (KOH) aqueous electrolyte. It also showed an excellent cycle stability about 99.9% retention after 20000 charge‐discharge cycles. The assembled ABP‐1.5‐700‐based symmetric capacitor displayed the value of the specific capacitance was 75 F g⁻¹ at 1 A g⁻¹ with a maximum energy density of 13.78 Wh kg⁻¹ and a power density of 661.25 W kg⁻¹ (0‐1.15 V) in 6 M KOH electrolyte solution. The results showed that the porous carbon derived from blueberry peel presented a good potential for high performance supercapacitors.

中文翻译：

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用于高性能超级电容器的蓝莓果皮衍生的多孔碳：N掺杂和激活的影响

通过简单有效的碳化和活化过程，使用蓝莓皮（BP）作为碳源和三聚氰胺作为氮源，已成功制备了氮掺杂（N掺杂）活性多孔碳。获得的ABP-1.5-700（ABP-x-y，ABP：蓝莓皮衍生的活性多孔碳; x：BP /三聚氰胺质量比; y：碳化温度），氮掺杂含量为8.29 at％，表示最大比值在6 M氢氧化钾（KOH）水溶液中，电流密度为1 A g ^-1时，电容值为324.3 F g ^-1。在20000次充放电循环后，它还显示了出色的循环稳定性，约99.9％的保留率。组装好的基于ABP‐1.5‐700的对称电容器显示的比电容值为75 F g ^-1在1 A g ^-1下，在6 M KOH电解质溶液中的最大能量密度为13.78 Wh kg ^-1，功率密度为661.25 W kg ^-1（0-1.15 V）。结果表明，蓝莓皮衍生的多孔碳为高性能超级电容器提供了良好的潜力。