Practical High-Performance (Bi,Sb)2Te3‑Based Thermoelectric Nanocomposites Fabricated by Nanoparticle Mixing and Scrap Recycling

Bi2Te3-based compounds are the most mature and widely used thermoelectric materials. However, industrial device fabrication will inevitably produce a lot of Bi2Te3 scraps, which results in wastes of expensive material resources. In this work, we recycled p-type (Bi,Sb)2Te3 scraps and reprocessed the...

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Published inACS applied materials & interfaces Vol. 12; no. 14; pp. 16426 - 16435
Main Authors Cai, Bowen, Zhuang, Hua-Lu, Cao, Qian, Hu, Haihua, Dong, Jinfeng, Asfandiyar, Li, Jing-Feng
Format Journal Article
LanguageEnglish
Published American Chemical Society 08.04.2020
Subjects
antimony
bismuth
hardness
mixing
nanocomposites
nanoparticles
recycling
silicon carbide
tellurium
wastes
compositional optimization
hardness
bismuth telluride
commercial scraps recycle
thermoelectric
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Summary:Bi2Te3-based compounds are the most mature and widely used thermoelectric materials. However, industrial device fabrication will inevitably produce a lot of Bi2Te3 scraps, which results in wastes of expensive material resources. In this work, we recycled p-type (Bi,Sb)2Te3 scraps and reprocessed them by making nanocomposites with nano-SiC. The thermoelectric performance was enhanced, and a high ZT value of 1.07 was achieved, which is a significant improvement compared with commercial p-type (Bi,Sb)2Te3 ingots. Also, the hardness showed a notable increase, which is beneficial for device fabrication. In addition, we adjusted the proportion of Bi/Te of the commercial p-type (Bi,Sb)2Te3 scraps, thereby improving the thermoelectric performance and obtaining a higher ZT value of 1.2.
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ISSN:1944-8244
1944-8252
1944-8252
DOI:10.1021/acsami.0c01014