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Journal article
High capacitance of coarse-grained carbide derived carbon electrodes
Journal of power sources, v 306
29 Feb 2016
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
We report exceptional electrochemical properties of supercapacitor electrodes composed of large, granular carbide-derived carbon (CDC) particles. Using a titanium carbide (TiC) precursor, we synthesized 70–250 μm sized particles with high surface area and a narrow pore size distribution. 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. 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 CDC 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.
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•High capacitance and power density of coarse-grained porous carbon supercapacitors.•Lower synthesis and manufacturing costs.•Greater mass loading for grid and automotive electrical energy storage.•Superior performance than activated carbon in different electrolytes.•Expanded operating voltage window.
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Details
- Title
- High capacitance of coarse-grained carbide derived carbon electrodes
- Creators
- Boris Dyatkin - Drexel University, Materials Science and EngineeringOleksiy Gogotsi - Materials Research Center (Ukraine)Bohdan Malinovskiy - Materials Research Center (Ukraine)Yuliya Zozulya - Materials Research Center (Ukraine)Patrice Simon - Université Toulouse III - Paul SabatierYury Gogotsi - Drexel University, Materials Science and Engineering
- Publication Details
- Journal of power sources, v 306
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000370309300005
- Scopus ID
- 2-s2.0-84949580017
- Other Identifier
- 991014969756804721
UN Sustainable Development Goals (SDGs)
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Physical
- Electrochemistry
- Energy & Fuels
- Materials Science, Multidisciplinary