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Solvothermal synthesis of wire-like SnxSb2Te3+x with an enhanced thermoelectric performance
Yang, Heng Quan1,2,3; Miao, Lei1; Liu, Cheng Yan1; Wang, Xiao Yang1; Peng, Ying1; Zhang, Ai Juan4; Zhou, Xiao Yuan4; Wang, Guo Yu5; Li, Chao6; Huang, Rong6
2016
摘要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 degrees 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.
DOI10.1039/c6dt00974c
发表期刊DALTON TRANSACTIONS
ISSN1477-9226
卷号45期号:17页码:7483-7491
通讯作者Miao, L (reprint author), Guilin Univ Elect Technol, Sch Mat Sci & Engn, Guangxi Collaborat Innovat Ctr Struct & Property, Guangxi Key Lab Informat Mat, Guilin 541004, Peoples R China.
收录类别SCI
WOS记录号WOS:000375001000039
语种英语