Journal article
Capacitance of two-dimensional titanium carbide (MXene) and MXene/carbon nanotube composites in organic electrolytes
Journal of power sources, v 306, pp 510-515
29 Feb 2016
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Pseudocapacitive materials that store charges by fast redox reactions are promising candidates for designing high energy density electrochemical capacitors. MXenes e recently discovered twodimensional carbides, have shown excellent capacitance in aqueous electrolytes, but in a narrow potential window, which limits both the energy and power density. Here, we investigated the electrochemical behavior of Ti3C2 MXene in 1M solution of 1-ethly-3-methylimidazolium bis- (trifluoromethylsulfonyl) -imide (EMITFSI) in acetonitrile and two other common organic electrolytes. This paper describes the use of clay, delaminated and composite Ti3C2 electrodes with carbon nanotubes in order to understand the effect of the electrode architecture and composition on the electrochemical performance. Capacitance values of 85 F g-1 and 245 F cm-3 were obtained at 2 mV s-1, with a high rate capability and good cyclability. In situ X-ray diffraction study reveals the intercalation of large EMIþ cations into MXene, which leads to increased capacitance, but may also be the rate limiting factor that determines the device performance.
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Details
- Title
- Capacitance of two-dimensional titanium carbide (MXene) and MXene/carbon nanotube composites in organic electrolytes
- Creators
- Yohan Dall’Agnese - Centre interuniversitaire de recherche et d'ingenierie des matériauxPatrick Rozier - Centre interuniversitaire de recherche et d'ingenierie des matériauxPierre-Louis Taberna - Centre interuniversitaire de recherche et d'ingenierie des matériauxYury Gogotsi - Drexel UniversityPatrice Simon - Centre interuniversitaire de recherche et d'ingenierie des matériaux
- Publication Details
- Journal of power sources, v 306, pp 510-515
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000370309300063
- Scopus ID
- 2-s2.0-84950996011
- Other Identifier
- 991014969873804721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Physical
- Electrochemistry
- Energy & Fuels
- Materials Science, Multidisciplinary