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Title: High-density freestanding graphene/carbide-derived carbon film electrodes for electrochemical capacitors

Authors:
ORCiD logo; ; ; ORCiD logo; ORCiD logo
Publication Date:
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1419340
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Carbon
Additional Journal Information:
Journal Volume: 118; Journal Issue: C; Related Information: CHORUS Timestamp: 2018-02-01 20:45:43; Journal ID: ISSN 0008-6223
Publisher:
Elsevier
Country of Publication:
United Kingdom
Language:
English

Citation Formats

Alhabeb, Mohamed, Beidaghi, Majid, Van Aken, Katherine L., Dyatkin, Boris, and Gogotsi, Yury. High-density freestanding graphene/carbide-derived carbon film electrodes for electrochemical capacitors. United Kingdom: N. p., 2017. Web. doi:10.1016/j.carbon.2017.03.094.
Alhabeb, Mohamed, Beidaghi, Majid, Van Aken, Katherine L., Dyatkin, Boris, & Gogotsi, Yury. High-density freestanding graphene/carbide-derived carbon film electrodes for electrochemical capacitors. United Kingdom. doi:10.1016/j.carbon.2017.03.094.
Alhabeb, Mohamed, Beidaghi, Majid, Van Aken, Katherine L., Dyatkin, Boris, and Gogotsi, Yury. 2017. "High-density freestanding graphene/carbide-derived carbon film electrodes for electrochemical capacitors". United Kingdom. doi:10.1016/j.carbon.2017.03.094.
@article{osti_1419340,
title = {High-density freestanding graphene/carbide-derived carbon film electrodes for electrochemical capacitors},
author = {Alhabeb, Mohamed and Beidaghi, Majid and Van Aken, Katherine L. and Dyatkin, Boris and Gogotsi, Yury},
abstractNote = {},
doi = {10.1016/j.carbon.2017.03.094},
journal = {Carbon},
number = C,
volume = 118,
place = {United Kingdom},
year = 2017,
month = 7
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on April 7, 2018
Publisher's Accepted Manuscript

Citation Metrics:
Cited by: 1work
Citation information provided by
Web of Science

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  • Carbon nanotube sheet electrodes have been prepared from catalytically grown carbon nanotubes of high purity and narrow diameter distribution, centered around 80 {Angstrom}. Our study shows that the electrodes are free-standing mats of entangled nanotubes with an open porous structure almost impossible to obtain with activated carbon or carbon fiber. These properties are highly desirable for high power and long cycle life electrochemical capacitors. Specific capacitances of 102 and 49 F/g were measured at 1 and 100 Hz, respectively, on a single cell device with 38 wt{percent} H{sub 2}SO{sub 4} as the electrolyte. The same cell had a power densitymore » of {gt}8000 W/kg. {copyright} {ital 1997 American Institute of Physics.}« less
  • Cited by 30
  • Here, we report exceptional electrochemical properties of supercapacitor electrodes composed of large, granular carbide-derived carbon (CDC) particles. We synthesized 70–250 μm sized particles with high surface area and a narrow pore size distribution, using a titanium carbide (TiC) precursor. Electrochemical cycling of these coarse-grained powders defied conventional wisdom that a small particle size is strictly required for supercapacitor electrodes and allowed high charge storage densities, rapid transport, and good rate handling ability. Moreover, the material showcased capacitance above 100 F g -1 at sweep rates as high as 250 mV s -1 in organic electrolyte. 250–1000 micron thick dense CDCmore » films with up to 80 mg cm -2 loading showed superior areal capacitances. The material significantly outperformed its activated carbon counterpart in organic electrolytes and ionic liquids. Furthermore, large internal/external surface ratio of coarse-grained carbons allowed the resulting electrodes to maintain high electrochemical stability up to 3.1 V in ionic liquid electrolyte. In addition to presenting novel insights into the electrosorption process, these coarse-grained carbons offer a pathway to low-cost, high-performance implementation of supercapacitors in automotive and grid-storage applications.« less