The composite capacitive behaviors of the N and S dual doped ordered mesoporous carbon with ultrahigh doping level
The composite capacitive behaviors of the N and S dual doped ordered mesoporous carbon with ultrahigh doping level
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超高掺杂N、S双掺杂有序介孔碳的复合电容行为
DOI：
10.1016/j.apsusc.2015.11.071
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发表时间：
2016
影响因子：
6.7
通讯作者：
Yi Wang
中科院分区：
文献类型：
--
作者：
Deyi Zhang;Longyan Lei;Yonghua Shang;Kunjie Wang;Yi Wang
杂原子掺杂为提高碳电极超级电容器的能量密度提供了一种很有前途的策略。本文以丁二酮肟为原料合成了一种N和S双掺杂超高掺杂有序介孔碳材料。根据碳化温度的不同，所报道材料的N掺杂含量在6.6%至15.6%之间变化，S掺杂含量在0.46%至1.01%之间变化。由于超高的杂原子掺杂量，所报道的材料表现出明显的伪电容。同时，所报道的材料具有较高的比表面积(640⿿869×m2g⿿1)、大的孔体积(0.71⿿1.08×cm2g⿿1)和有序的孔结构。优异的织构性能使所报道的材料具有优异的双电层电容(EDLC)。通过将伪电容和EDLC有效地结合在一起，所报道的材料表现出惊人的储能/松弛能力，最高比电容达到565F/g⿿-1，是原始材料CMK-3的3.3倍，可以与一些传统的伪电容材料相竞争。
Heteroatoms doping provides a promising strategy for improving the energy density of supercapacitors based on the carbon electrodes. In this paper, we present a N and S dual doped ordered mesoporous carbon with ultrahigh doping level using dimethylglyoxime as pristine precursor. The N doping content of the reported materials varies from 6.6 to 15.6 at.% dependent on the carbonization temperature, and the S doping content varies from 0.46 to 1.01 at.%. Due to the ultrahigh heteroatoms doping content, the reported materials exhibit pronounced pseudo-capacitance. Meanwhile, the reported materials exhibit high surface areas (640⿿869 m2g⿿1), large pore volume (0.71⿿1.08 cm2g⿿1) and ordered pore structure. The outstanding textual properties endow the reported materials excellent electrical double-layer capacitance (EDLC). By effectively combining the pseudo-capacitance with EDLC, the reported materials exhibit a surprising energy storage/relax capacity with the highest specific capacitance of 565 F g⿿1, which value is 3.3 times higher than that of pristine CMK-3, and can compete against some conventional pseudo-capacitance materials.
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