Abstract Nitrogen-doped porous carbon materials (NPCs) were successfully obtained through one-step carbonization of an ionic liquid, that is, 1-ethyl-3-methylimidazolium dicyanamide (EMIM-dca), adopting eutectic salt (ZnCl2-NaCl) as the porogen agent. The nitrogen content and textural structure of the obtained carbon materials are highly dependent on the dosage of salt. The as-prepared NPCs integrate the superiorities of reasonable pore structure, high nitrogen content as well as homogeneous distribution, and high surface area. When served as electrodes for supercapacitor, a typical NPC-2 electrode exhibits a high specific capacitance of 335.3 and 206 F g−1 at current densities of 0.5 and 10 A g−1, respectively, considerable energy density (up to 10.1 Wh kg−1), and excellent cycling stability with almost no degradation over 10,000 cycles in KOH aqueous solution.

中文翻译：

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来自离子液体的氮掺杂多孔碳材料作为超级电容器的电极

摘要 以共晶盐（ZnCl2-NaCl）为原料，一步碳化离子液体即1-乙基-3-甲基咪唑鎓二氰胺（EMIM-dca），成功获得了掺氮多孔碳材料（NPCs）。致孔剂。所得碳材料的氮含量和结构结构高度依赖于盐的用量。所制备的NPCs集孔隙结构合理、氮含量高、分布均匀、表面积大等优点于一体。当用作超级电容器的电极时，典型的 NPC-2 电极在电流密度分别为 0.5 和 10 A g-1 时表现出 335.3 和 206 F g-1 的高比电容，具有相当大的能量密度（高达 10.1 Wh kg-） 1)、优异的循环稳定性，超过 10 次几乎不降解，