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Journal article
Tailored synthesis approach of (Mo2/3Y1/3)(2)AlC i-MAX and its two-dimensional derivative Mo1.33CTz MXene: enhancing the yield, quality, and performance in supercapacitor applications
Nanoscale, v 13(1), pp 311-319
07 Jan 2021
PMID: 33338088
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
A vacancy-ordered MXene, Mo1.33CTz, obtained from the selective etching of Al and Sc from the parent i-MAX phase (Mo2/3Sc1/3)(2)AlC has previously shown excellent properties for supercapacitor applications. Attempts to synthesize the same MXene from another precursor, (Mo2/3Y1/3)(2)AlC, have not been able to match its forerunner. Herein, we show that the use of an AlY2.3 alloy instead of elemental Al and Y for the synthesis of (Mo2/3Y1/3)(2)AlC i-MAX, results in a close to 70% increase in sample purity due to the suppression of the main secondary phase, Mo3Al2C. Furthermore, through a modified etching procedure, we obtain a Mo1.33CTz MXene of high structural quality and improve the yield by a factor of 6 compared to our previous efforts. Free-standing films show high volumetric (1308 F cm(-3)) and gravimetric (436 F g(-1)) capacitances and a high stability (98% retention) at the level of, or even beyond, those reported for the Mo1.33CTz MXene produced from the Sc-based i-MAX. These results are of importance for the realization of high quality MXenes through use of more abundant elements (Y vs. Sc), while also reducing waste (impurity) material and facilitating the synthesis of a high-performance material for applications.
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Details
- Title
- Tailored synthesis approach of (Mo2/3Y1/3)(2)AlC i-MAX and its two-dimensional derivative Mo1.33CTz MXene: enhancing the yield, quality, and performance in supercapacitor applications
- Creators
- Joseph Halim - Linköping UniversityAhmed S. Etman - Linköping UniversityAnna Elsukova - Linköping UniversityPeter Polcik - PlanseeJustinas Palisaitis - Linköping UniversityMichel W. Barsoum - Drexel UniversityPer O. A. Persson - Linkoping Univ, Dept Phys Chem & Biol IFM, Thin Film Phys Div, SE-58183 Linkoping, SwedenJohanna Rosen - Linköping University
- Publication Details
- Nanoscale, v 13(1), pp 311-319
- Publisher
- Royal Soc Chemistry
- Number of pages
- 9
- Grant note
- 2009 00971 / Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linkoping University (Faculty Grant SFO-Mat-LiU) RIF 14-0074 / Swedish Foundation for Strategic Research (SSF) through the Research Infrastructure Fellow program 2016-04412 / Swedish Research Council; European Commission EM16-0004 / Swedish Foundation for Strategic Research (SSF); Swedish Foundation for Strategic Research KAW Foundation Knut and Alice Wallenberg (KAW) Foundation; Knut & Alice Wallenberg Foundation
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000607350900030
- Scopus ID
- 2-s2.0-85099222325
- Other Identifier
- 991019167721104721
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- Collaboration types
- Industry collaboration
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Multidisciplinary
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology
- Physics, Applied