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Issue 40, 2014
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Thermoelectric properties of higher manganese silicide/multi-walled carbon nanotube composites

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Abstract

Composites made of Higher Manganese Silicide (HMS)-based compound MnSi1.75Ge0.02 and multi-walled carbon nanotubes (MWCNTs) were prepared by an easy and effective method including mechanical milling under mild conditions and reactive spark plasma sintering. SEM compositional mappings show a homogeneous dispersion of MWCNTs in the HMS matrix. Electronic and thermal transport properties were measured from room temperature to 875 K. While power factors are virtually unchanged by the addition of MWCNTs, the lattice thermal conductivity is significantly reduced by about 30%. As a consequence, the maximum figure of merit for the composites with 1 wt% MWCNTs is improved by about 20% compared to the MWCNT free HMS-based sample.

Graphical abstract: Thermoelectric properties of higher manganese silicide/multi-walled carbon nanotube composites

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Publication details

The article was received on 15 May 2014, accepted on 26 Aug 2014 and first published on 27 Aug 2014


Article type: Paper
DOI: 10.1039/C4DT01441C
Author version available: Download Author version (PDF)
Citation: Dalton Trans., 2014,43, 15092-15097
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    Thermoelectric properties of higher manganese silicide/multi-walled carbon nanotube composites

    D. Y. N. Truong, H. Kleinke and F. Gascoin, Dalton Trans., 2014, 43, 15092
    DOI: 10.1039/C4DT01441C

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