Interface kinetic manipulation enabling efficient and reliable Mg₃Sb₂ thermoelectrics.

ABSTRACT: Development of efficient and reliable thermoelectric generators is vital for the sustainable utilization of energy, yet interfacial losses and failures between the thermoelectric materials and the electrodes pose a significant obstacle. Existing approaches typically rely on thermodynamic equilibrium to obtain effective interfacial barrier layers, which underestimates the critical factors of interfacial reaction and diffusion kinetics. Here, we develop a desirable barrier layer by leveraging the distinct chemical reaction activities and diffusion behaviors during sintering and operation. Titanium foil is identified as a suitable barrier layer for Mg₃Sb₂-based thermoelectric materials due to the creation of a highly reactive ternary MgTiSb metastable phase during sinter

SUBMITTER: Fu Y 

PROVIDER: S-EPMC11522479 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature