Unrivaled combination of surface area and pore volume in micelle-templated carbon for supercapacitor energy storage
Abstract
Here, we created Immense Surface Area Carbons (ISACs) by a novel heat treatment that stabilized the micelle structure in a biological based precursor prior to high temperature combined activation – pyrolysis. While displaying a morphology akin to that of commercial activated carbon, ISACs contain an unparalleled combination of electrochemically active surface area and pore volume (up to 4051 m2 g–1, total pore volume 2.60 cm3 g–1, 76% small mesopores). The carbons also possess the benefit of being quite pure (combined O and N: 2.6–4.1 at%), thus allowing for a capacitive response that is primarily EDLC. Tested at commercial mass loadings (~10 mg cm–2) ISACs demonstrate exceptional specific capacitance values throughout the entire relevant current density regime, with superior rate capability primarily due to the large fraction of mesopores. In the optimized ISAC, the specific capacitance (Cg) is 540 F g–1 at 0.2 A g–1, 409 F g–1 at 1 A g–1 and 226 F g–1 at a very high current density of 300 A g–1 (~0.15 second charge time). At intermediate and high currents, such capacitance values have not been previously reported for any carbon. Tested with a stable 1.8 V window in a 1 M Li2SO4 electrolyte, a symmetricmore »
- Authors:
-
- Clarkson Univ., Potsdam, NY (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- State Univ. of New York, Binghamton, NY (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)
- Sponsoring Org.:
- USDOE Laboratory Directed Research and Development (LDRD) Program
- OSTI Identifier:
- 1366417
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Materials Chemistry. A
- Additional Journal Information:
- Journal Volume: 5; Journal Issue: 26; Journal ID: ISSN 2050-7488
- Publisher:
- Royal Society of Chemistry
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 25 ENERGY STORAGE; 36 MATERIALS SCIENCE; energy storage; high power; aqueous battery; lithium ion battery; sodium ion battery; activated carbon; graphite; graphene; nanotube; two dimensional; sulfur; phosphorous; doped carbon; heteroatom
Citation Formats
Pokrzywinski, Jesse, Keum, Jong K., Ruther, Rose E., Self, Ethan C., Chi, Miaofang, Meyer, III, Harry M., Littrell, Kenneth C., Aulakh, Darpandeep, Marble, Sam, Ding, Jia, Wriedt, Mario, Nanda, Jagjit, and Mitlin, David. Unrivaled combination of surface area and pore volume in micelle-templated carbon for supercapacitor energy storage. United States: N. p., 2017.
Web. doi:10.1039/C7TA03655H.
Pokrzywinski, Jesse, Keum, Jong K., Ruther, Rose E., Self, Ethan C., Chi, Miaofang, Meyer, III, Harry M., Littrell, Kenneth C., Aulakh, Darpandeep, Marble, Sam, Ding, Jia, Wriedt, Mario, Nanda, Jagjit, & Mitlin, David. Unrivaled combination of surface area and pore volume in micelle-templated carbon for supercapacitor energy storage. United States. https://doi.org/10.1039/C7TA03655H
Pokrzywinski, Jesse, Keum, Jong K., Ruther, Rose E., Self, Ethan C., Chi, Miaofang, Meyer, III, Harry M., Littrell, Kenneth C., Aulakh, Darpandeep, Marble, Sam, Ding, Jia, Wriedt, Mario, Nanda, Jagjit, and Mitlin, David. Tue .
"Unrivaled combination of surface area and pore volume in micelle-templated carbon for supercapacitor energy storage". United States. https://doi.org/10.1039/C7TA03655H. https://www.osti.gov/servlets/purl/1366417.
@article{osti_1366417,
title = {Unrivaled combination of surface area and pore volume in micelle-templated carbon for supercapacitor energy storage},
author = {Pokrzywinski, Jesse and Keum, Jong K. and Ruther, Rose E. and Self, Ethan C. and Chi, Miaofang and Meyer, III, Harry M. and Littrell, Kenneth C. and Aulakh, Darpandeep and Marble, Sam and Ding, Jia and Wriedt, Mario and Nanda, Jagjit and Mitlin, David},
abstractNote = {Here, we created Immense Surface Area Carbons (ISACs) by a novel heat treatment that stabilized the micelle structure in a biological based precursor prior to high temperature combined activation – pyrolysis. While displaying a morphology akin to that of commercial activated carbon, ISACs contain an unparalleled combination of electrochemically active surface area and pore volume (up to 4051 m2 g–1, total pore volume 2.60 cm3 g–1, 76% small mesopores). The carbons also possess the benefit of being quite pure (combined O and N: 2.6–4.1 at%), thus allowing for a capacitive response that is primarily EDLC. Tested at commercial mass loadings (~10 mg cm–2) ISACs demonstrate exceptional specific capacitance values throughout the entire relevant current density regime, with superior rate capability primarily due to the large fraction of mesopores. In the optimized ISAC, the specific capacitance (Cg) is 540 F g–1 at 0.2 A g–1, 409 F g–1 at 1 A g–1 and 226 F g–1 at a very high current density of 300 A g–1 (~0.15 second charge time). At intermediate and high currents, such capacitance values have not been previously reported for any carbon. Tested with a stable 1.8 V window in a 1 M Li2SO4 electrolyte, a symmetric supercapacitor cell yields a flat energy–power profile that is fully competitive with those of organic electrolyte systems: 29 W h kg–1 at 442 W kg–1 and 17 W h kg–1 at 3940 W kg–1. The cyclability of symmetric ISAC cells is also exceptional due to the minimization of faradaic reactions on the carbon surface, with 80% capacitance retention over 100 000 cycles in 1 M Li2SO4 and 75 000 cycles in 6 M KOH.},
doi = {10.1039/C7TA03655H},
journal = {Journal of Materials Chemistry. A},
number = 26,
volume = 5,
place = {United States},
year = {Tue May 23 00:00:00 EDT 2017},
month = {Tue May 23 00:00:00 EDT 2017}
}
Web of Science
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