Solvothermal synthesis of wire-like SnxSb2Te3+x with an enhanced thermoelectric performance

Heng Quan Yang, Lei Miao, Cheng Yan Liu, Xiao Yang Wang, Ying Peng, Ai Juan Zhang, Xiao Yuan Zhou, Guo Yu Wang, Chao Li, Rong Huang

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Nanostructured tellurides have attracted increasing attention in thermoelectric applications for waste heat recovery and cooling devices. Here, we report on the synthesis of wire-like SnxSb2Te3+x (x = 0, 0.02 and 0.05) nanoparticles using elemental precursors in EG. The enhanced thermoelectric performance was achieved in alloyed samples due to the increase of carrier population in heavy valence band valleys by incorporating Sn2+ at the Sb3+ sublattice, enabling the simultaneous realization of low electrical resistivity along with a high Seebeck coefficient as well as the decline of thermal conductivity. Thus a boosted power factor and low thermal conductivity lead to the highest ZT value of 0.58 at 150 °C in the Sn0.02Sb2Te3.02 sample. Our research offers a general wet-chemical route for the preparation of one-dimensional nanomaterials and probably promotes the practical thermoelectric applications of Sb2Te3-based materials at low temperatures.

Original languageEnglish
Pages (from-to)7483-7491
Number of pages9
JournalDalton Transactions
Volume45
Issue number17
DOIs
Publication statusPublished - 2016 May 7
Externally publishedYes

ASJC Scopus subject areas

  • Inorganic Chemistry

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    Yang, H. Q., Miao, L., Liu, C. Y., Wang, X. Y., Peng, Y., Zhang, A. J., Zhou, X. Y., Wang, G. Y., Li, C., & Huang, R. (2016). Solvothermal synthesis of wire-like SnxSb2Te3+x with an enhanced thermoelectric performance. Dalton Transactions, 45(17), 7483-7491. https://doi.org/10.1039/c6dt00974c