Issue 27, 2023

Sr2Sb2O7: a novel earth abundant oxide thermoelectric


Thermoelectric devices are increasingly proving to be a viable energy recycling method, with oxide thermoelectrics providing an earth abundant and non-toxic alternative to the materials traditionally used in the field. This study conducts a detailed investigation into the thermoelectric properties of the ternary wide band semiconductor Sr2Sb2O7, which has previously been synthesised under high temperature conditions and shown to be thermally stable. Lattice dynamics calculations predict lattice thermal conductivities below 1 W m−1 K−1 at temperatures above 1125 K. The Seebeck coefficient, electrical conductivity and electronic component to the thermal conductivity were calculated via the explicit calculation of the polar optical phonon scattering, acoustic deformation potential scattering and ionised impurity scattering rates within the AMSET code. The obtained results were combined to obtain a maximum ZT of 0.536 at 1400 K, which when nanostructured to 10 nm was increased to 0.71, showing its predicted potential to perform as a high-performance n-type oxide thermoelectric.

Graphical abstract: Sr2Sb2O7: a novel earth abundant oxide thermoelectric

Supplementary files

Article information

Article type
21 Mar 2023
14 Jun 2023
First published
14 Jun 2023
This article is Open Access
Creative Commons BY license

J. Mater. Chem. C, 2023,11, 9124-9134

Sr2Sb2O7: a novel earth abundant oxide thermoelectric

L. H. Rodriguez, K. B. Spooner, M. Einhorn and D. O. Scanlon, J. Mater. Chem. C, 2023, 11, 9124 DOI: 10.1039/D3TC01003A

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

Read more about how to correctly acknowledge RSC content.

Social activity