Work

Instability Mechanism in Thermoelectric Mg2(Si,Sn) and the Role of Mg Diffusion at Room Temperature

Year: 2025

Type: article

Abstract: Thermoelectric Materials In article number 2300298, Amandine Duparchy, Byungki Ryu, Johannes de Boor, and co-workers assess stability criteria and degradation in Mg2(Si,Sn), a high performance thermoelectric material. It is revealed that the reaction of loosely bound Mg with moisture and the subsequent diffusion of Mg via vacancies leads to a relatively fast degradation of Sn-rich compositions already at room temperature, while Si-rich compositions are stable, indicating superior suitability for widespread applications in Mg2(Si,Sn)-based thermoelectric generators.

Source: Small Science

DOI: 10.1002/smsc.202570011

Authors: Amandine Duparchy, Radhika Deshpande, Aryan Sankhla, Sanyukta Ghosh, Julia Camut, Sungjin Park, SuDong Park, Byungki Ryu, Eckhard Mueller, Johannes de Boor

Institutions: Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR), Korea Electrotechnology Research Institute, Justus-Liebig-Universität Gießen, University of Duisburg-Essen

Language: English

Topic: Advanced Thermoelectric Materials and Devices

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $6,350

OpenAlex ID: W4408094596

FWCI: 1.06

Cites:

Cited by: 5

Related to: 10