Institute of Innovative Research, 
Tokyo Institute of Technology.


Press Release

Breaking Trade-Off Problem That Limits Thermoelectric Conversion Efficiency of Waste Heat

Scientists at Tokyo Institute of Technology (Tokyo Tech) demonstrate that breaking the trade-off problem between thermopower and conductivity improves thermoelectric performance. They suggest introducing lattice strain into Mott insulator oxide LaTiO3 converts the electronic state to metal, and increases both thermopower and conductivity to induce a 100-fold increase in power factor, which in turn enables the conversion of waste heat to electricity more efficiently. Their findings could help ensure a more energy-efficient future.