Preparation and thermoelectric properties of Cu1.8S/CuSbS2 composites

22Citations
Citations of this article
22Readers
Mendeley users who have this article in their library.

Abstract

Chalcostibite (CuSbS2) is composed of earth-abundant elements and has a proper band gap (Eg = 1.05 eV) as a thermoelectric (TE) material. Herein, we report the TE properties in the CuSbS2based composites with a mole ratio of (1−x)CuSbS2−xCu18S (x = 0, 0.1, 0.2, 0.3), which were prepared by mechanical alloying (MA) combined with spark plasma sintering (SPS). X-ray diffraction (XRD) and back-scattered electron image (BSE) results indicate that a single phase of CuSbS2 is synthesized at x = 0 and the samples consist of CuSbS2, Cu3SbS4, and Cu12Sb4S13 at 0.1 ⩽ x ⩽ 0.3. The correlation between the phase structure, microstructure, and TE transport properties of the bulk samples is established. The electrical conductivity increases from 0.14 to 50.66 S·cm−1 at 723 K and at 0 ⩽ x ⩽ 0.03, while the Seebeck coefficient holds an appropriate value of 190.51 µV·K−1. The highest ZT value of 0.17 is obtained at 723 K and at x = 0.3 owing to the combination of a high PF 183 µW·m−1·K−2 and a low κ 0.8 W·m−1·K−1.

Cite

CITATION STYLE

APA

Tang, C., Liang, D., Li, H., Luo, K., & Zhang, B. (2019). Preparation and thermoelectric properties of Cu1.8S/CuSbS2 composites. Journal of Advanced Ceramics, 8(2), 209–217. https://doi.org/10.1007/s40145-018-0306-0

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free