Negative-thermal-expansion particles enable high-performance and ultradurable thermoelectric modules.

ABSTRACT: Interfacial compatibility across multiple material parts governs device stability in solid-state batteries, flexible electronics, and high-temperature fuel cells. For thermoelectric devices, researchers principally focused on chemical reactivity and mechanical properties of material components, whereas precise control of the coefficient of thermal expansion (CTE) remains elusive. Here, we propose an innovative strategy using negative-thermal-expansion (NTE) particles to regulate CTE and resolve interfacial incompatibility. Incorporating predesigned interface reaction-free NTE particles into Bi₂Te₃-based, Mg₃Sb₂-based, and PbTe-based materials effectively improves thermoelectric performance, alleviates thermal stress, and enhances interfacial stab

SUBMITTER: Yang H 

PROVIDER: S-EPMC12829564 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature