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Issue 21, 2014
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Low thermal conductivity and rapid synthesis of n-type cobalt skutterudite via a hydrothermal method

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Abstract

We report low thermal conductivity for n-type cobalt skutterudites synthesized via a rapid hydrothermal procedure combined with evacuated-and-encapsulated heating. Different synthesis temperatures were investigated to obtain a single phase of CoSb3. The resulting samples were characterized using X-ray diffraction, scanning electron microscopy, Hall and density measurements. A remarkably low thermal conductivity of 1.33–1.46 W m−1 K−1 at room temperature can be attained for the pristine CoSb3, which is comparable with or even lower than that of the filled CoSb3 obtained from solid state reaction. Regarding the requirement of lengthy annealing and reaction at high temperature using solid state reaction, our remarkably rapid and low temperature procedure fabrication together with significantly low thermal conductivity presents major progress in fabricating cobalt skutterudites using hydrothermal synthesis methods.

Graphical abstract: Low thermal conductivity and rapid synthesis of n-type cobalt skutterudite via a hydrothermal method

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Publication details

The article was received on 09 Feb 2014, accepted on 14 Mar 2014 and first published on 17 Mar 2014


Article type: Paper
DOI: 10.1039/C4TC00260A
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Citation: J. Mater. Chem. C, 2014,2, 4213-4220
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    Low thermal conductivity and rapid synthesis of n-type cobalt skutterudite via a hydrothermal method

    A. Gharleghi, Y. Pai, F. Lin and C. Liu, J. Mater. Chem. C, 2014, 2, 4213
    DOI: 10.1039/C4TC00260A

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