Journal article
Control of MXenes' electronic properties through termination and intercalation
Nature communications, v 10(1), pp 522-522
31 Jan 2019
PMID: 30705273
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
MXenes are an emerging family of highly-conductive 2D materials which have demonstrated state-of-the-art performance in electromagnetic interference shielding, chemical sensing, and energy storage. To further improve performance, there is a need to increase MXenes' electronic conductivity. Tailoring the MXene surface chemistry could achieve this goal, as density functional theory predicts that surface terminations strongly influence MXenes' Fermi level density of states and thereby MXenes' electronic conductivity. Here, we directly correlate MXene surface de-functionalization with increased electronic conductivity through in situ vacuum annealing, electrical biasing, and spectroscopic analysis within the transmission electron microscope. Furthermore, we show that intercalation can induce transitions between metallic and semiconductor-like transport (transitions from a positive to negative temperature-dependence of resistance) through inter-flake effects. These findings lay the groundwork for intercalation- and termination-engineered MXenes, which promise improved electronic conductivity and could lead to the realization of semiconducting, magnetic, and topologically insulating MXenes.
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Details
- Title
- Control of MXenes' electronic properties through termination and intercalation
- Creators
- James L Hart - Department of Materials Science & Engineering, Drexel University, Philadelphia, PA, 19104, USAKanit Hantanasirisakul - A.J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, PA, 19104, USAAndrew C Lang - Department of Materials Science & Engineering, Drexel University, Philadelphia, PA, 19104, USABabak Anasori - A.J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, PA, 19104, USADavid Pinto - A.J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, PA, 19104, USAYevheniy Pivak - DENSsolutions, Informaticalaan 12, Delft, 2626ZD, The NetherlandsJ Tijn van Omme - DENSsolutions, Informaticalaan 12, Delft, 2626ZD, The NetherlandsSteven J May - Department of Materials Science & Engineering, Drexel University, Philadelphia, PA, 19104, USAYury Gogotsi - A.J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, PA, 19104, USAMitra L Taheri - Department of Materials Science & Engineering, Drexel University, Philadelphia, PA, 19104, USA. mtaheri@coe.drexel.edu
- Publication Details
- Nature communications, v 10(1), pp 522-522
- Publisher
- Springer Nature; England
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000457291300010
- Scopus ID
- 2-s2.0-85060655642
- Other Identifier
- 991014970023904721
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- Collaboration types
- International collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary