Enhanced thermoelectric performance in ternary spinel Cu4Mn2Te4via the synergistic effect of tellurium deficiency and chlorine doping

Hong Chen; Hua Lin; Yi Liu; Xin-Tao Wu; Li-Ming Wu

doi:10.1039/C7DT03223D

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Enhanced thermoelectric performance in ternary spinel Cu₄Mn₂Te₄via the synergistic effect of tellurium deficiency and chlorine doping†

Hong Chen,^a Hua Lin,

*^a Yi Liu,

^b Xin-Tao Wu^a and Li-Ming Wu

*^ac

Author affiliations

* Corresponding authors

^a State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, People's Republic of China
E-mail: linhua@fjirsm.ac.cn, liming_wu@fjirsm.ac.cn

^b State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China

^c Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, Beijing Normal University, Beijing 100875, People's Republic of China

Abstract

The chemistry of copper-based chalcogenides has received considerable attention due to their diverse structures and potential applications in the area of thermoelectric (TE) materials. In this communication, a series of spinel-type Cu₄Mn₂Te₄-based samples have been successfully prepared and their high TE performances are attributed to the enhanced power factor and low thermal conductivity via the synergistic effect of Te deficiency and Cl doping. Consequently, a maximum TE figure of merit (ZT) of ∼0.4 was achieved for the Cu₄Mn₂Te_3.93Cl_0.03 sample at 700 K, which was about 100% enhanced in comparison with the undoped Cu₄Mn₂Te₄ sample and one of the highest ZT values reported for p-type spinel tellurides.

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Article information

DOI: https://doi.org/10.1039/C7DT03223D
Article type: Communication
Submitted: 31 Aug 2017
Accepted: 03 Oct 2017
First published: 03 Oct 2017
This article is Open Access

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Dalton Trans., 2017,46, 14752-14756

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Enhanced thermoelectric performance in ternary spinel Cu₄Mn₂Te₄via the synergistic effect of tellurium deficiency and chlorine doping

H. Chen, H. Lin, Y. Liu, X. Wu and L. Wu, Dalton Trans., 2017, 46, 14752 DOI: 10.1039/C7DT03223D

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