TY - JOUR
T1 - Nitrogen-doped porous carbon monoliths from molecular-level dispersion of carbon nanotubes into polyacrylonitrile (PAN) and the effect of carbonization process for supercapacitors
AU - Wang, Yanqing
AU - Wang, Jinying
AU - Morimoto, Shingo
AU - Hong Melvin, Gan Jet
AU - Zhao, Ruiqi
AU - Hashimoto, Yoshio
AU - Terrones, Mauricio
N1 - Funding Information:
Yanqing Wang is supported by the Research Fellowships of the Japan Society for the Promotion of Science for Young Scientists and a Grant-in-Aid for JSPS Fellows (No. P15050 ). This research is supported in part by grants from the Project of the NARO Bio-oriented Technology Research Advancement Institution (Integration research for agriculture and interdisciplinary fields) and is supported by grants from the Project of NARO Bio-oriented Technology Research Advancement Institution (The Project for development of New Practical Technology) . HRTEM and BET measurements were carried out at National Institute for Materials Science (NIMS) Battery Research Platform. Y.Q.W. acknowledges the support from Shinshu-University Molecule and Material Synthesis Platform (MMSPF) . A part of this work was conducted at Advanced Characterization Nanotechnology Platform of the University of Tokyo, supported by “Nanotechnology Platform” of the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan . Y.Q.W. also acknowledges Institute of Carbon Science and Technology of Shinshu University . M.S.D. acknowledges support from the U.S. National Science Foundation , grant DMR-1507806 .
Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2019/3
Y1 - 2019/3
N2 - Nitrogen-doped porous carbon monoliths (NDP-CMs) have long been pursued as the desirable supercapacitor electrode materials. However, the currently effective template methods and Lewis acid/base activation strategy suffer from the drawbacks of either high costs or tedious steps. We report on a simple and practicable novel method to the production of CNTs constructed NDP-CMs. Polyacrylonitrile (PAN) contained carbon nanotubes (CNTs), being dispersed into tubular level of dispersions (mono-dispersions), were used as the starting material and NDP-CMs were obtained through a direct carbonization process. First, PAN/CNT based mesostructured polymeric monoliths with interconnected networks were formed using a template-free temperature-induced phase separation (TTPS) method and the mono-dispersed CNTs networks act as the backbones of PAN molecules. Then, NDP-CMs with a surface area of 840 m2/g and a pore diameter 2.48 nm were obtained through heat treatment. Thus, the NDP-CMs based supercapacitor demonstrated a reversible specific capacitance of 246 F/g. Furthermore, pyridinic nitrogen and quaternary nitrogen species contribute significantly to the advantageous electrochemical activities of NDP-CMs.
AB - Nitrogen-doped porous carbon monoliths (NDP-CMs) have long been pursued as the desirable supercapacitor electrode materials. However, the currently effective template methods and Lewis acid/base activation strategy suffer from the drawbacks of either high costs or tedious steps. We report on a simple and practicable novel method to the production of CNTs constructed NDP-CMs. Polyacrylonitrile (PAN) contained carbon nanotubes (CNTs), being dispersed into tubular level of dispersions (mono-dispersions), were used as the starting material and NDP-CMs were obtained through a direct carbonization process. First, PAN/CNT based mesostructured polymeric monoliths with interconnected networks were formed using a template-free temperature-induced phase separation (TTPS) method and the mono-dispersed CNTs networks act as the backbones of PAN molecules. Then, NDP-CMs with a surface area of 840 m2/g and a pore diameter 2.48 nm were obtained through heat treatment. Thus, the NDP-CMs based supercapacitor demonstrated a reversible specific capacitance of 246 F/g. Furthermore, pyridinic nitrogen and quaternary nitrogen species contribute significantly to the advantageous electrochemical activities of NDP-CMs.
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U2 - 10.1016/j.carbon.2018.11.024
DO - 10.1016/j.carbon.2018.11.024
M3 - Article
AN - SCOPUS:85059336344
SN - 0008-6223
VL - 143
SP - 776
EP - 785
JO - Carbon
JF - Carbon
ER -