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Materials 2016, 9(8), 629; doi:10.3390/ma9080629

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

School of Materials Science and Engineering, University of Jinan, 336 Nan-Xinzhuang West Road, Jinan 250022, China
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Academic Editor: Shankar M.L. Sastry
Received: 29 June 2016 / Revised: 16 July 2016 / Accepted: 21 July 2016 / Published: 28 July 2016
(This article belongs to the Special Issue Physical Metallurgy of High Performance Alloys)
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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. View Full-Text
Keywords: thermoelectric alloy; composites; Cu2SnSe3; C60 thermoelectric alloy; composites; Cu2SnSe3; C60
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Zhao, D.; Ning, J.; Wu, D.; Zuo, M. Enhanced Thermoelectric Performance of Cu2SnSe3-Based Composites Incorporated with Nano-Fullerene. Materials 2016, 9, 629.

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