Issue 20, 2023

A Cu-based Cu8−xGe(S, Te)6 argyrodite: its widespan cubic-phase region and ultralow lattice thermal conductivity

Abstract

This work discloses a newly-discovered Cu8−xGe(S, Te)6 argyrodite stabilizing in a high-symmetry cubic phase in the entire low-to-mid temperature region (250–700 K). Partially substituting the sulfur with tellurium increases the configuration entropy, enabling the Cu8−xGe(S, Te)6 as a promising mid-entropy thermoelectric (TE) alloy with ultralow thermal conductivity.

Graphical abstract: A Cu-based Cu8−xGe(S, Te)6 argyrodite: its widespan cubic-phase region and ultralow lattice thermal conductivity

  • This article is part of the themed collection: #MyFirstJMCA

Supplementary files

Article information

Article type
Communication
Submitted
10 Mar 2023
Accepted
25 Apr 2023
First published
25 Apr 2023

J. Mater. Chem. A, 2023,11, 10532-10537

A Cu-based Cu8−xGe(S, Te)6 argyrodite: its widespan cubic-phase region and ultralow lattice thermal conductivity

Y. Tsai, C. L. Stern, B. Chen, G. J. Snyder and H. Wu, J. Mater. Chem. A, 2023, 11, 10532 DOI: 10.1039/D3TA01476B

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