Nitrogen-doped porous carbon monoliths from polyacrylonitrile (PAN) and carbon nanotubes as electrodes for supercapacitors

Yanqing Wang, Bunshi Fugetsu, Zhipeng Wang, Wei Gong, Ichiro Sakata, Shingo Morimoto, Yoshio Hashimoto, Morinobu Endo, Mildred Dresselhaus, Mauricio Terrones

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Abstract

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 m 2 /g and a pore volume 0.366 cm 3 /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.

Original languageEnglish (US)
Article number40259
JournalScientific reports
Volume7
DOIs
StatePublished - Jan 11 2017

All Science Journal Classification (ASJC) codes

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    Wang, Y., Fugetsu, B., Wang, Z., Gong, W., Sakata, I., Morimoto, S., Hashimoto, Y., Endo, M., Dresselhaus, M., & Terrones, M. (2017). Nitrogen-doped porous carbon monoliths from polyacrylonitrile (PAN) and carbon nanotubes as electrodes for supercapacitors. Scientific reports, 7, [40259]. https://doi.org/10.1038/srep40259