Journal article
Electrochemical and in-situ X-ray diffraction studies of Ti3C2Tx MXene in ionic liquid electrolyte
Electrochemistry communications, v 72(C), pp 50-53
Nov 2016
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Abstract
2D titanium carbide (Ti3C2Tx MXene) showed good capacitance in both organic and neat ionic liquid electrolytes, but its charge storage mechanism is still not fully understood. Here, electrochemical characteristics of Ti3C2Tx electrode were studied in neat EMI-TFSI electrolyte. A capacitive behavior was observed within a large electrochemical potential range (from −1.5 to 1.5V vs. Ag). Intercalation and de-intercalation of EMI+ cations and/or TFSI− anions were investigated by in-situ X-ray diffraction. Interlayer spacing of Ti3C2Tx flakes decreases during positive polarization, which can be ascribed to either electrostatic attraction effect between intercalated TFSI− anions and positively charged Ti3C2Tx nanosheets or steric effect caused by de-intercalation of EMI+ cations. The expansion of interlayer spacing when polarized to negative potentials is explained by steric effect of cation intercalation.
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•Ti3C2 MXene achieved a capacitance of 84Fg−1 within a 3V potential in EMI-TFSI.•Intercalation/de-intercalation of EMI+ and/or TFSI− ions is confirmed by in-situ XRD.•Electrostatic and/or steric effect change the interlayer spacing in Ti3C2 flakes.
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Details
- Title
- Electrochemical and in-situ X-ray diffraction studies 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, FrancePatrick Rozier - CIRIMAT, Université de Toulouse, CNRS, INPT, UPS, 118, Route de Narbonne, 31062 Toulouse cedex 9, FranceBenjamin Duployer - 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, FranceBabak 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
- Electrochemistry communications, v 72(C), pp 50-53
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000387526700012
- Scopus ID
- 2-s2.0-84986277606
- Other Identifier
- 991014969752004721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Electrochemistry