ZT > 0.1 Electron-Carrying Polymer Thermoelectric Composites with In Situ SnCl2 Microstructure Growth.

An n-type pyromellitic diimide polymer composite with in situ microstructure growth of the common element compound SnCl2 reaches power factor of 50-100 µW m-1 K-2, the highest purely n-type polymer composite power factor yet reported. The composite has a gigantic Seebeck coefficient between -4000 and -5000 µV K-1, many times higher than other polymer composites.