Journal
NANOTECHNOLOGY
Volume 27, Issue 33, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/0957-4484/27/33/335702
Keywords
MAX Phases; MXenes; dynamical properties; mechanical properties
Funding
- Anadolu University [BAP-140F335, BAP-1505F200]
- Turkish Academy of Sciences (TUBA-GEBIP)
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MXenes, carbides, nitrides and carbonitrides of early transition metals are the new members of two dimensional materials family given with a formula of Mn+1 X-n. Recent advances in chemical exfoliation and CVD growth of these crystals together with their promising performance in electrochemical energy storage systems have triggered the interest in these two dimensional structures. In this work, we employ first principles calculations for n = 1 structures of Sc, Ti, Zr, Mo and Hf pristine MXenes and their fully surface terminated forms with F and O. We systematically investigated the dynamical and mechanical stability of both pristine and fully terminated MXene structures to determine the possible MXene candidates for experimental realization. In conjunction with an extensive stability analysis, we report Raman and infrared active mode frequencies for the first time, providing indispensable information for the experimental elaboration of MXene field. After determining dynamically stable MXenes, we provide their phonon dispersion relations, electronic and mechanical properties.
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