Journal article
Capacitance of Ti3C2Tx MXene in ionic liquid electrolyte
Journal of power sources, v 326, pp 575-579
15 Sep 2016
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Ti3C2Tx MXene, a two-dimensional (2D) early transition metal carbide, has shown an extremely high volumetric capacitance in aqueous electrolytes, but in a narrow voltage window (less than 1.23 V). The utilization of MXene materials in ionic liquid electrolytes with a large voltage window has never been addressed. Here, we report the preparation of the Ti3C2Tx MXene ionogel film by vacuum filtration for use as supercapacitor electrodes operating in 1-Ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (EMI-TFSI) neat ionic liquid electrolyte. Due to the disordered structure of the Ti3C2Tx hydrogel film and a stable spacing after vacuum drying, achieved through ionic liquid electrolyte immersion of the Ti3C2Tx hydrogel film, the Ti3C2Tx surface became accessible to EMI+ and TFSI− ions. A capacitance of 70 F g−1 together with a large voltage window of 3 V was obtained at a scan rate of 20 mV s−1 in neat EMI-TFSI electrolyte. The electrochemical signature indicates a capacitive behavior even at a high scan rate (500 mV s−1) and a high power performance. This work opens up the possibilities of using MXene materials with various ionic liquid electrolytes.
•Ti3C2Tx-ionogel film was prepared by vacuum filtration and ionic liquid immersion.•Capacitance of 70 F g−1 in a voltage window of 3 V was achieved in EMI-TFSI.•High power performance was obtained as shown by the rectangular CVs shape.
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Details
- Title
- Capacitance of Ti3C2Tx MXene in ionic liquid electrolyte
- Creators
- Zifeng Lin - CIRIMAT, Université de Toulouse, CNRS, INPT, UPS, 118, route de Narbonne, 31062 Toulouse cedex 9, FranceDaffos Barbara - CIRIMAT, Université de Toulouse, CNRS, INPT, UPS, 118, route de Narbonne, 31062 Toulouse cedex 9, FrancePierre-Louis Taberna - CIRIMAT, Université de Toulouse, CNRS, INPT, UPS, 118, route de Narbonne, 31062 Toulouse cedex 9, FranceKatherine L Van Aken - Department of Materials Science & Engineering, A.J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, PA 19104, USABabak Anasori - Department of Materials Science & Engineering, A.J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, PA 19104, USAYury Gogotsi - Department of Materials Science & Engineering, A.J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, PA 19104, USAPatrice Simon - CIRIMAT, Université de Toulouse, CNRS, INPT, UPS, 118, route de Narbonne, 31062 Toulouse cedex 9, France
- Publication Details
- Journal of power sources, v 326, pp 575-579
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000382338800069
- Scopus ID
- 2-s2.0-84963682533
- Other Identifier
- 991014970148304721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Physical
- Electrochemistry
- Energy & Fuels
- Materials Science, Multidisciplinary