Abstract
Thermoelectric power generators enable the direct conversion between waste heat and electricity near room temperatures, providing an environmentally friendly solution toward mitigating the ever-increasing global energy issues. Over the past years, we have witnessed significant advances in Mg3Sb2-based thermoelectric conversion materials. However, the device-relative efforts lag behind the materials-level works. In this mini-review, we summarize the advances in Mg3Sb2-based thermoelectrics from materials to devices. Further, we shine some light on the device-level challenge, including the design of thermoelectric interface materials, the stability issue, and the system-level full-parameter optimization. Finally, we discuss the new application scenarios exploration to inspire confidence in device-level efforts towards practical applications.
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