Journal article
Thermoelectric Properties of Two-Dimensional Molybdenum-Based MXenes
Chemistry of materials, v 29(15), pp 6472-6479
08 Aug 2017
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
MXenes are an interesting class of 2D materials consisting of transition metal carbides and nitrides, which are currently a subject of extensive studies. Although there have been theoretical calculations estimating the thermoelectric properties of MXenes, no experimental measurements have been reported so far. In this report, three compositions of Mo-based MXenes (Mo2CT x , Mo2TiC2T x , and Mo2Ti2C3T x ) have been synthesized and processed into free-standing binder-free papers by vacuum-assisted filtration, and their electrical and thermoelectric properties are measured. Upon heating to 800 K, these MXene papers exhibit high conductivity and n-type Seebeck coefficient. The thermoelectric power reaches 3.09 × 10–4 W m–1 K–2 at 803 K for the Mo2TiC2T x MXene. While the thermoelectric properties of MXenes do not reach that of the best materials, they exceed their parent ternary and quaternary layered carbides. Mo2TiC2T x shows the highest electrical conductivity in combination with the largest Seebeck coefficient of the three 2D materials studied.
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Details
- Title
- Thermoelectric Properties of Two-Dimensional Molybdenum-Based MXenes
- Creators
- Hyunho Kim - King Abdullah University of Science and Technology (KAUST)Babak Anasori - Drexel UniversityYury Gogotsi - Drexel UniversityHusam N Alshareef - King Abdullah University of Science and Technology (KAUST)
- Publication Details
- Chemistry of materials, v 29(15), pp 6472-6479
- Publisher
- American Chemical Society; Washington, DC
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000407522300035
- Scopus ID
- 2-s2.0-85027378951
- Other Identifier
- 991014969863604721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Physical
- Materials Science, Multidisciplinary