Synthesis of n-type Mg₂Si/CNT Thermoelectric Nanofibers

Magnesium silicide (Mg₂Si)/carbon nanotube (CNT) thermoelectric nanofibers for use as a flexible thermoelectric material were successfully synthesized through the combined processes of the sol-gel method, magnesiothermic reduction, and liquid-solid phase reaction. In the resulting product, each CNT was coated with Mg₂Si which was an approximately 60-nm-thick single crystal. The synthesized Mg₂Si-coated CNTs exhibited n-type thermoelectric behavior confirming that n-type thermoelectric composite nanofibers were successfully obtained.