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Title: Facile fabrication of MnOx and N co-doped hierarchically porous carbon microspheres for high-performance supercapacitors

Abstract

Facile fabrication of manganese oxide (MnOx, 0 < x < 2) and nitrogen (N) co-doped carbon microspheres (MnOx-N-CS) has been firstly developed by one-pot construction of Mn-functionalized melamine-formaldehyde (Mn-MF) resin spheres before pyrolysis. The resulting hybrids bear evenly dispersed MnOx and N moieties in situ anchored on hierarchically porous carbon microspheres formed simultaneously. The capacitive performance is greatly tailored by varying the Mn/melamine molar ratio in the synthetic mixture and pyrolysis temperature. It is found that the MnOx-N-CS hybrid (0.008 wt% Mn, pyrolyzed at 800 °C) exhibits the highest specific capacitance up to 258 F g–1 at a scan rate of 1 mV s–1 (in 6 M KOH), and keeps a high capacitance retention ratio of 98% after 5000 cycles. The synergism between MnOx, N moieties and carbon spheres proves to be responsible for the remarkably improved performance, as compared to the pure carbon sphere and MnOx (N)-doped carbon sphere. Lastly, the well-developed MnOx-N-CS hybrids highlight the great potentials for widespread supercapacitor applications.

Authors:
 [1];  [1];  [2];  [1];  [1];  [1];  [1];  [1]
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  1. China Univ. of Petroleum, Beijing (China)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22) National Natural Science Foundation of China; USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division
OSTI Identifier:
1338957
Alternate Identifier(s):
OSTI ID: 1359037
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Electrochimica Acta
Additional Journal Information:
Journal Volume: 191; Journal Issue: C; Journal ID: ISSN 0013-4686
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; carbon microsphere; Mn-functionalized melamine-formaldehyde; manganese oxide; nitrogen; supercapacitors

Citation Formats

Yang, Ying, Yang, Feng, Lee, Sungsik, Li, Xinsong, Zhao, Hairui, Wang, Yue, Hao, Shijie, and Zhang, Xin. Facile fabrication of MnOx and N co-doped hierarchically porous carbon microspheres for high-performance supercapacitors. United States: N. p., 2016. Web. doi:10.1016/j.electacta.2016.01.075.
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Yang, Ying, Yang, Feng, Lee, Sungsik, Li, Xinsong, Zhao, Hairui, Wang, Yue, Hao, Shijie, & Zhang, Xin. Facile fabrication of MnOx and N co-doped hierarchically porous carbon microspheres for high-performance supercapacitors. United States. https://doi.org/10.1016/j.electacta.2016.01.075
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Yang, Ying, Yang, Feng, Lee, Sungsik, Li, Xinsong, Zhao, Hairui, Wang, Yue, Hao, Shijie, and Zhang, Xin. Sat . "Facile fabrication of MnOx and N co-doped hierarchically porous carbon microspheres for high-performance supercapacitors". United States. https://doi.org/10.1016/j.electacta.2016.01.075. https://www.osti.gov/servlets/purl/1338957.
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@article{osti_1338957,
title = {Facile fabrication of MnOx and N co-doped hierarchically porous carbon microspheres for high-performance supercapacitors},
author = {Yang, Ying and Yang, Feng and Lee, Sungsik and Li, Xinsong and Zhao, Hairui and Wang, Yue and Hao, Shijie and Zhang, Xin},
abstractNote = {Facile fabrication of manganese oxide (MnOx, 0 < x < 2) and nitrogen (N) co-doped carbon microspheres (MnOx-N-CS) has been firstly developed by one-pot construction of Mn-functionalized melamine-formaldehyde (Mn-MF) resin spheres before pyrolysis. The resulting hybrids bear evenly dispersed MnOx and N moieties in situ anchored on hierarchically porous carbon microspheres formed simultaneously. The capacitive performance is greatly tailored by varying the Mn/melamine molar ratio in the synthetic mixture and pyrolysis temperature. It is found that the MnOx-N-CS hybrid (0.008 wt% Mn, pyrolyzed at 800 °C) exhibits the highest specific capacitance up to 258 F g–1 at a scan rate of 1 mV s–1 (in 6 M KOH), and keeps a high capacitance retention ratio of 98% after 5000 cycles. The synergism between MnOx, N moieties and carbon spheres proves to be responsible for the remarkably improved performance, as compared to the pure carbon sphere and MnOx (N)-doped carbon sphere. Lastly, the well-developed MnOx-N-CS hybrids highlight the great potentials for widespread supercapacitor applications.},
doi = {10.1016/j.electacta.2016.01.075},
journal = {Electrochimica Acta},
number = C,
volume = 191,
place = {United States},
year = {Sat Jan 16 00:00:00 EST 2016},
month = {Sat Jan 16 00:00:00 EST 2016}
}
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Publisher's Version of Record
https://doi.org/10.1016/j.electacta.2016.01.075
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    Works referencing / citing this record:

    Synthesis and Supercapacitive Properties of Carboxylated Graphene Oxide -Polyaniline/Polypyrrole Nanocomposites
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