Synthesis of carbon core–shell pore structures and their performance as supercapacitors
Abstract
High-power supercapacitors require excellent electrolyte mobility within the pore network and high electrical conductivity for maximum capacitance and efficiency. Achieving high power typically requires sacrificing energy densities, as the latter demands a high specific surface area and narrow porosity that impedes ion transport. Here, we present a novel solution for this optimization problem: a nanostructured core–shell carbonaceous material that exhibits a microporous carbon core surrounded by a mesoporous, graphitic shell. The tunable synthesis parameters yielded a structure that features either a sharp or a gradual transition between the core and shell sections. Electrochemical supercapacitor testing using organic electrolyte revealed that these novel core–shell materials outperform carbons with homogeneous pore structures. The hybrid core–shell materials showed a combination of good capacitance retention, typical for the carbon present in the shell and high specific capacitance, typical for the core material. These materials achieved power densities in excess of 40 kW kg-1 at energy densities reaching 27 Wh kg-1.
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Energy Frontier Research Centers (EFRC) (United States). Fluid Interface Reactions, Structures and Transport Center (FIRST)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1265858
- Alternate Identifier(s):
- OSTI ID: 1251519
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Microporous and Mesoporous Materials
- Additional Journal Information:
- Journal Volume: 218; Journal Issue: C; Journal ID: ISSN 1387-1811
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 25 ENERGY STORAGE; 36 MATERIALS SCIENCE
Citation Formats
Ariyanto, Teguh, Dyatkin, Boris, Zhang, Gui-Rong, Kern, Andreas, Gogotsi, Yury, and Etzold, Bastian J. M. Synthesis of carbon core–shell pore structures and their performance as supercapacitors. United States: N. p., 2015.
Web. doi:10.1016/j.micromeso.2015.07.007.
Ariyanto, Teguh, Dyatkin, Boris, Zhang, Gui-Rong, Kern, Andreas, Gogotsi, Yury, & Etzold, Bastian J. M. Synthesis of carbon core–shell pore structures and their performance as supercapacitors. United States. https://doi.org/10.1016/j.micromeso.2015.07.007
Ariyanto, Teguh, Dyatkin, Boris, Zhang, Gui-Rong, Kern, Andreas, Gogotsi, Yury, and Etzold, Bastian J. M. Wed .
"Synthesis of carbon core–shell pore structures and their performance as supercapacitors". United States. https://doi.org/10.1016/j.micromeso.2015.07.007. https://www.osti.gov/servlets/purl/1265858.
@article{osti_1265858,
title = {Synthesis of carbon core–shell pore structures and their performance as supercapacitors},
author = {Ariyanto, Teguh and Dyatkin, Boris and Zhang, Gui-Rong and Kern, Andreas and Gogotsi, Yury and Etzold, Bastian J. M.},
abstractNote = {High-power supercapacitors require excellent electrolyte mobility within the pore network and high electrical conductivity for maximum capacitance and efficiency. Achieving high power typically requires sacrificing energy densities, as the latter demands a high specific surface area and narrow porosity that impedes ion transport. Here, we present a novel solution for this optimization problem: a nanostructured core–shell carbonaceous material that exhibits a microporous carbon core surrounded by a mesoporous, graphitic shell. The tunable synthesis parameters yielded a structure that features either a sharp or a gradual transition between the core and shell sections. Electrochemical supercapacitor testing using organic electrolyte revealed that these novel core–shell materials outperform carbons with homogeneous pore structures. The hybrid core–shell materials showed a combination of good capacitance retention, typical for the carbon present in the shell and high specific capacitance, typical for the core material. These materials achieved power densities in excess of 40 kW kg-1 at energy densities reaching 27 Wh kg-1.},
doi = {10.1016/j.micromeso.2015.07.007},
journal = {Microporous and Mesoporous Materials},
number = C,
volume = 218,
place = {United States},
year = {Wed Jul 15 00:00:00 EDT 2015},
month = {Wed Jul 15 00:00:00 EDT 2015}
}
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Works referencing / citing this record:
Improving control of carbide-derived carbon microstructure by immobilization of a transition-metal catalyst within the shell of carbide/carbon core–shell structures
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- Ariyanto, Teguh; Glaesel, Jan; Kern, Andreas
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Activated Carbon in the Third Dimension—3D Printing of a Tuned Porous Carbon
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