Journal article
Electrochemical characterizations of carbon nanomaterials by the cavity microelectrode technique
Electrochimica acta, v 53(26), pp 7675-7680
2008
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
The cavity microelectrode (CME) technique was used to screen carbide-derived carbons (CDC) and carbon onions and investigate their electrochemical performance for electrical double-layer capacitors (EDLC) in an H
2SO
4 electrolyte. The results show that the CME is very effective in terms of screening large numbers of powder samples rapidly, reliably, and efficiently, compared with conventional based electrochemical techniques using large surface electrodes. The results obtained from CME for CDC agree well with the conventional technique. High rate response was obtained with carbon onions because of their high graphitization degree. Therefore, the CME technique could also differentiate microstructure variation in powder materials, especially under high scan rate (as high as 10
V/s). These results show that, though the CME cannot completely replace conventional methods for electrochemical characterization of EDLCs, it is a complementary tool that can be used to quickly evaluate the performance of materials (combinatorial electrochemistry study) and highlight possible trends to explore using conventional techniques.
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Details
- Title
- Electrochemical characterizations of carbon nanomaterials by the cavity microelectrode technique
- Creators
- C Portet - Department of Material Science and Engineering, and A.J. Drexel Nanotechnology Institute, 3141 Chestnut Street, Philadelphia, PA, 19104, USAJ Chmiola - Department of Material Science and Engineering, and A.J. Drexel Nanotechnology Institute, 3141 Chestnut Street, Philadelphia, PA, 19104, USAY Gogotsi - Department of Material Science and Engineering, and A.J. Drexel Nanotechnology Institute, 3141 Chestnut Street, Philadelphia, PA, 19104, USAS Park - Department of Material Science and Engineering, University of Toronto, 184 College Street, M5S 3E4, Toronto, Ontario, CanadaK Lian - Department of Material Science and Engineering, University of Toronto, 184 College Street, M5S 3E4, Toronto, Ontario, Canada
- Publication Details
- Electrochimica acta, v 53(26), pp 7675-7680
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000259729700011
- Scopus ID
- 2-s2.0-49349094512
- Other Identifier
- 991014878188504721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Electrochemistry