Abstract A nitrogen-enriched active carbon fiber/reduced graphene oxide nanocomposite was synthesized by electrospinning, calcination, self-assembled reduction, and post treatment nitrogen doping. The nitrogen content and C/O ratio of nitrogen-enriched active carbon fiber/reduced graphene oxide nanocomposite was up to 12 at.% and 28 after post process N-doping, respectively. High specific capacitance of 208 F g−1 at 20 A g−1 and excellent rate performance was shown in 6 mol L−1 KOH. Meanwhile, a specific capacitance of 212 F g−1 was obtained at 3 A g−1 and along with 99% capacitance retention after 10 000 cycles for quasi solid state supercapacitors. The excellent electrochemical performance is attributed to unique line-plane structure between the one dimensional active carbon fiber and the two dimensional reduced graphene oxide, and incorporation of nitrogen functional groups.

中文翻译：

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基于富氮活性炭纤维/还原氧化石墨烯纳米复合材料的高倍率集成准固态超级电容器

摘要 通过静电纺丝、煅烧、自组装还原和后处理氮掺杂合成了富氮活性炭纤维/还原氧化石墨烯纳米复合材料。富氮活性炭纤维/还原氧化石墨烯纳米复合材料的氮含量和碳氧比分别在后处理 N 掺杂后达到 12 at.% 和 28。在 6 mol L-1 KOH 中显示出 20 A g-1 时 208 F g-1 的高比电容和优异的倍率性能。同时，准固态超级电容器在 3 A g-1 下获得了 212 F g-1 的比电容，并且在 10 000 次循环后保持了 99% 的电容保持率。优异的电化学性能归功于一维活性炭纤维和二维还原氧化石墨烯之间独特的线面结构，