Abstract Nitrogen and boron co-doped activated carbon (BKACS) was synthesized through the carbonization, KOH activation and subsequently hydrothermal doping reaction process with chitosan as the renewable carbon source. The prepared samples were characterized by XRD, SEM, Raman, XPS and BET for their structure, morphology, specific surface area and elemental composition, respectively. The obtained BKACS has a specific surface area of 1129.6 m2 g−1, with high conductivity and capacitive character. The BKACS was applied as the electrode material to fabricate the electrochemical double-layer supercapacitor. The supercapacitor performed a high specific capacitance of 316 F g−1 at 0.2 A g−1 in a three-electrode system in the 6 M KOH electrolyte and excellent cycling stability with a capacitance retention of 94.08% after 10,000 cycles at 10 A g−1. The attractive supercapacitor performance of the BKACS material has the high power density, excellent cycling life, and environmental friendliness, making it potentially a promising replaceable function for future energy storing device.

中文翻译：

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用于具有增强电化学性能的超级电容器的具有丰富多孔结构的壳聚糖基碳的简便合成

摘要 以壳聚糖为可再生碳源，通过碳化、KOH活化和随后的水热掺杂反应过程合成了氮硼共掺杂活性炭（BKACS）。制备的样品分别通过 XRD、SEM、拉曼、XPS 和 BET 对其结构、形貌、比表面积和元素组成进行了表征。获得的 BKACS 的比表面积为 1129.6 m2 g-1，具有高电导率和电容特性。BKACS 被用作电极材料来制造电化学双层超级电容器。该超级电容器在 6 M KOH 电解液中的三电极系统中在 0.2 A g-1 下表现出 316 F g-1 的高比电容，并且具有出色的循环稳定性，在 10,000 次循环后在 10 A g- 下的电容保持率为 94.08% 1.