Concentration gradient-driven directional diffusion of Mg enhances high-temperature reliability of Mg3Sb2 thermoelectric devices

Key Points

• High-temperature reliability of thermoelectric devices improves significantly with concentration gradient-driven magnesium diffusion, showing a potential increase in lifespan.
• Diffusion-driven systems in Mg3Sb2 thermoelectric devices lead to a notable enhancement in performance metrics at elevated temperatures.
• Analysis focuses on the effects of concentration gradients on magnesium behavior, revealing critical insights into the functionality of thermoelectric materials.
• Implications indicate that enhanced understanding of diffusion mechanisms may lead to more reliable thermoelectric applications; further exploration needed.