Optimization ofp-type segmented Bi₂Te₃/CoSb₃ thermoelectric material prepared by spark plasma sintering

Abstract

A kind of p-type segmented Bi₂Te₃/CoSb₃ thermoelectric material was prepared by spark plasma sintering (SPS). When the segmented materials were used at the temperature ranging from 300 Koto 800K, the junction temperature was optimized, which is about 500 K, and the corresponding length ratio of CoSb₃ to Bi₂Te₃ is about 15∶2. The measured maximum power output of segmented materials is about 320 W·m⁻², which is about 1.8 times as high as that of monolithic material CoSb₃ under the same measuring conditions.

Keywords

CoSb₃ compounds / bismuth telluride / segmented thermoelectric materials / power outputs

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