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·1666· 精细化工 FINE CHEMICALS 第 35 卷

密度为 500 W/kg 下，水系电容器的能量密度为 10500 W/kg 下，其能量密度仍为 51.25 (Wh)/kg。这
9.86 (Wh)/kg。但更引人关注的是组装的有机系电 样的性能要优于商业电容器。因此说，这种方法制备
容器器件的电压窗口为 3.0 V。并且在功率密度为 的氮掺杂纳米级多孔石墨化碳具有优异的储能特性。

图 13 NPGC 材料组装的超级电容器在（a）6 mol/L KOH 和（b）1 mol/L Et 4 NBF 4 -PC 中的 GCD 曲线；（c）NPGC 材
料组装的超级电容器在 6 mol/L KOH 和 1 mol/L Et 4 NBF 4 -PC 中的能量密度随功率密度的变化
Fig. 13 GCD curves of NPGC sample in 6 mol/L KOH (a) and 1 mol/L Et 4 NBF 4 -PC (b) electrolytes, (c) Ragone plots
obtained from the galvanostatic discharge process at different current densities in 6 mol/L KOH and 1 mol/L
NEt 4 BF 4 -PC electrolytes, respectively

3 结论 34(2): 129-133.
[7] Chang B, Yin H, Zhang X, et al. Chemical blowing strategy synthesis
of nitrogen-rich porous graphitized carbon nanosheets: morphology,
（1）本文以价格低廉的生物质——海带为碳 pore structure and supercapacitor application[J]. Chemical
源、三聚氰胺为氮源，通过化学活化法合成出 Engineering Journal, 2017, 312: 191-203.
[8] Li R, Cao A, Zhang Y, et al. Formation of nitrogen-doped
NPGC。 mesoporous graphitic carbon with the help of melamine[J]. ACS
Applied Materials & Interfaces, 2014, 6(23): 20574-20578.
（2）所制得的样品 NPGC，表现出良好的储能
[9] Jeon J W, Sharma R, Meduri P, et al. In situ one-step synthesis of
特性：其比电容最高可达到 267 F/g，且经过 5000 hierarchical nitrogen-doped porous carbon for high-performance
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次循环后，NPGC 的比电容仍能保持其初始电容，
7214-7222.
并且其库伦效率保持在 99.9%以上。 [10] Liu Z, Xiao K, Guo H, et al. Nitrogen-doped worm-like graphitized
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（3）样品 NPGC 优异的储能特性主要归功于 capacitance of electrical double layer supercapacitors[J]. Carbon,
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孔结构，这种结构在电化学过程中可以有效地促进 mesoporous carbons through direct pyrolysis in ammonia with
电解液和电荷的传递，并且每一片层的 NPGC 相当 enhanced capacitive performance[J]. Journal of Materials Chemistry
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于一个小的电容器，它们串联或并联在一起组合成 [12] Pan Xuchen (潘旭晨), Tang Jing (汤静), Xue Hairong (薛海荣), et
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积和高含氮量对 NPGC 材料的电化学性能也有贡献。 [13] Andrewsa R, Jacquesa D, Dickeyb E C, et al. Purification and
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