The Influence of RuO₂ Addition on the Thermoelectric Properties of BiSbTe Alloys

Abstract:

P-type BiSbTe/RuO₂ composite was fabricated using a combined process of melting and spark plasma sintering. The XRD patterns showed that RuO₂ reacted with the matrix for the RuO₂ content of 1.0 wt% and 4.0 wt% samples. The measured thermoelectric properties showed that the highest electrical conductivity was obtained for the sample with 2.0 wt% RuO₂. The power factor (α²σ/κ) decreased with the increase of RuO₂ below 450 K. The lattice thermal conductivity was lower than that of BiSbTe over the whole temperature range for BiSbTe/2.0 wt% RuO₂.

• Periodical: Key Engineering Materials (Volumes 512-515)
• Pages: 1651-1654
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.512-515.1651
• Online since: June 2012
• Authors: Yu Kun Xiao, Zhi Xiang Li, Jun Jiang, Sheng Hui Yang, Ting Zhang, Yong Biao Zhai, Gao Jie Xu
• Keywords: Bismuth Antimony Telluride, RuO₂, Spark Plasma Sintering (SPS), Thermoelectric Properties

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