Nitrogen-doped porous carbon monoliths from polyacrylonitrile (PAN) and carbon nanotubes as electrodes for supercapacitors.
Nitrogen-doped porous carbon monoliths from polyacrylonitrile (PAN) and carbon nanotubes as electrodes for supercapacitors.
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DOI：
10.1038/srep40259
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发表时间：
2017-01-11
影响因子：
4.6
通讯作者：
Terrones M
中科院分区：
文献类型：
--
作者：
Wang Y;Fugetsu B;Wang Z;Gong W;Sakata I;Morimoto S;Hashimoto Y;Endo M;Dresselhaus M;Terrones M
掺氮多孔活性炭单体（NDP-ACMs）一直是超级电容器最理想的材料。不同于传统的模板刘易斯酸/碱活化法，本文报道了一种简单而实用的三维NDP-ACMs（3D-NDP-ACMs）的制备方法。以聚丙烯腈（PAN）为原料，将碳纳米管（CNTs）预分散成管状分散液，采用无模板法制备了3D-NDP-ACM。首先，通过使用无模板温度诱导相分离（TTPS）建立了连续的基于PAN/CNT的介孔3D整体材料。第二，获得具有613.8m2/g的表面积和0.366cm3/g的孔体积的氮掺杂的3D-ACM。具有我们的3D-NDP-ACM作为功能电极的典型超级电容器即使在3000次循环后也给出稳定在216 F/g的比电容，证明了基于PAN/CNT的3D-NDP-ACM的有利性能。
Nitrogen-doped porous activated carbon monoliths (NDP-ACMs) have long been the most desirable materials for supercapacitors. Unique to the conventional template based Lewis acid/base activation methods, herein, we report on a simple yet practicable novel approach to production of the three-dimensional NDP-ACMs (3D-NDP-ACMs). Polyacrylonitrile (PAN) contained carbon nanotubes (CNTs), being pre-dispersed into a tubular level of dispersions, were used as the starting material and the 3D-NDP-ACMs were obtained via a template-free process. First, a continuous mesoporous PAN/CNT based 3D monolith was established by using a template-free temperature-induced phase separation (TTPS). Second, a nitrogen-doped 3D-ACM with a surface area of 613.8 m2/g and a pore volume 0.366 cm3/g was obtained. A typical supercapacitor with our 3D-NDP-ACMs as the functioning electrodes gave a specific capacitance stabilized at 216 F/g even after 3000 cycles, demonstrating the advantageous performance of the PAN/CNT based 3D-NDP-ACMs.