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Defluorination-assisted heteroatom doping reaction with ammonia gas for synthesis of nitrogen-doped porous graphitized carbon
Chemical Engineering Journal ( IF 13.3 ) Pub Date : 2018-08-03 , DOI: 10.1016/j.cej.2018.08.016
Xu Wang , Weimiao Wang , Rui Qin , Dazhou Xu , Yulong Li , Anping Ou , Wenchuan Lai , Yang Liu , Xiangyang Liu

Nitrogen-doped porous graphitized carbon (N-F-PREGO) were synthesized by doping the fluorinated porous graphitized carbon with ammonia gas at reaction temperatures of 400–850 °C. In N-F-PREGO synthesized at 400 °C, nitrogen atoms were introduced into the porous graphene framework at a concentration of 7.9 at.%. Among which, the concentrations of the pyridinic-, pyrrolic-, and graphitic-type nitrogen species were 5.14, 1.78, and 0.99 at.%, respectively, and their percentages with respect to the total nitrogen species were 65.0, 22.5, and 12.5%, respectively. Meanwhile, the original specific surface area of 2022 m2/g and abundant meso- and microporous were well-preserved after doping process. Herein, the specific capacitance of the nitrogen-doped PREGOs was improved from 103 F/g to 294.2 F/g at a current density of 1.0 A/g. At 10 A/g, the specific capacitance was reserved at 272.5 F/g, and well retained even after 10,000 cycles at 5 A/g.



中文翻译:

氨气脱氟辅助杂原子掺杂反应合成氮掺杂多孔石墨碳

通过在400–850°C的反应温度下用氨气掺杂氟化多孔石墨化碳,来合成氮掺杂多孔石墨化碳(NF-PREGO)。在400°C合成的NF-PREGO中,氮原子以7.9 at。%的浓度引入多孔石墨烯骨架中。其中,吡啶型,吡咯型和石墨型氮的浓度分别为5.14、1.78和0.99 at。%,它们相对于总氮的百分比为65.0、22.5和12.5%。 , 分别。同时,原始比表面积为2022 m 2掺杂过程后,/ g以及大量的中孔和微孔都得到了很好的保存。在此,在1.0A / g的电流密度下,氮掺杂的PREGO的比电容从103F / g提高到294.2F / g。在10 A / g的情况下,比电容保留为272.5 F / g,即使在5 A / g的10,000次循环后仍保持良好。

更新日期:2018-08-03
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