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. 2016 Jul 28;9(8):629.
doi: 10.3390/ma9080629.

Enhanced Thermoelectric Performance of Cu₂SnSe₃-Based Composites Incorporated With Nano-Fullerene

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Free PMC article

Enhanced Thermoelectric Performance of Cu₂SnSe₃-Based Composites Incorporated With Nano-Fullerene

Degang Zhao et al. Materials (Basel). .
Free PMC article

Abstract

In this study, nano-sized fullerene C60 powder was sufficiently mixed with Cu₂SnSe₃ powder by ball milling method, and the C60/Cu₂SnSe₃ composites were prepared by spark plasma sintering technology. The fullerene C60 distributed uniformly in the form of clusters, and the average cluster size was less than 1 μm. With increasing C60 content, the electrical conductivity of C60/Cu₂SnSe₃ composites decreased, while the Seebeck coefficient was enhanced. The thermal conductivity of composites decreased significantly, which resulted from the phonon scattering by the C60 clusters located on the grain boundaries of the Cu₂SnSe₃ matrix. The highest figure of merit ZT of 0.38 was achieved at 700 K for 0.8% C60/Cu₂SnSe₃ composite.

Keywords: C60; Cu2SnSe3; composites; thermoelectric alloy.

Conflict of interest statement

The authors declare no conflicts of interest.

Figures

Figure 1
Figure 1
SEM image of fullerene powder with average particle size of 500 nm.
Figure 2
Figure 2
SEM image of the 1.6 vol % C60/Cu2SnSe3 powder after ball milling.
Figure 3
Figure 3
XRD patterns of sintered C60/Cu2SnSe3 composites.
Figure 4
Figure 4
(a) SEM microstructure of the sintered pure Cu2SnSe3; (b) SEM microstructure of sintered 1.6 vol % C60/Cu2SnSe3 composite.
Figure 5
Figure 5
(a) SEM image of the sintered 1.6% C60/Cu2SnSe3 composite; (b) energy-dispersive X-ray spectroscopy (EDS) results of Cu2SnSe3 matrix and C60 phase.
Figure 6
Figure 6
High-resolution transmission electron microscopy (HRTEM) image of a C60 particle in the C60/Cu2SnSe3 composite.
Figure 7
Figure 7
Temperature dependence of electrical conductivity (σ) of C60/Cu2SnSe3 composites.
Figure 8
Figure 8
Temperature dependence of Seebeck coefficient (α) of C60/Cu2SnSe3 composites.
Figure 9
Figure 9
Temperature dependence of carrier mobility (μH) of C60/Cu2SnSe3 composites.
Figure 10
Figure 10
(a) Temperature dependence of total thermal conductivity (κ) of C60/Cu2SnSe3 composites; (b) temperature dependence of lattice thermal conductivity (κL) of C60/Cu2SnSe3 composites.
Figure 11
Figure 11
Temperature dependence of the dimensionless figure of merit of (ZT) of C60/Cu2SnSe3 composites.

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References

    1. Disalvo F.J. Thermoelectric cooling and power generation. Science. 1999;285:703–706. doi: 10.1126/science.285.5428.703. - DOI - PubMed
    1. Yu Y., Lv L., Wang X.Y., Zhu B., Huang Z., Zu F.Q. Influence of melt overheating treatment on solidification behavior of Bi2Te3-based alloys at different cooling rates. Mater. Des. 2015;88:743–750.
    1. Liu W.S., Yan X., Chen G., Ren Z.F. Recent advances in thermoelectric nanocomposites. Nano Energy. 2012;1:42–56. doi: 10.1016/j.nanoen.2011.10.001. - DOI
    1. Wan S., Huang X.Y., Qiu P.F., Bai S.Q., Chen L.D. The effect of short carbon fibers on the thermoelectric and mechanical properties of p-type CeFe4Sb12 skutterudite composites. Mater. Des. 2015;67:379–384. doi: 10.1016/j.matdes.2014.11.050. - DOI
    1. Zerer W.G., Lalonde A., Gibbs Z.M., Heinrich C.P., Panthofer M., Snyder G.J., Tremel W. Influence of a nano phase segregation on the thermoelectric properties of the p-type doped stannite compound Cu2+xZn1-xGeSe4. J. Am. Chem. Soc. 2012;134:7147–7154. doi: 10.1021/ja301452j. - DOI - PubMed
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