| 초록 |
Thermoelectric power can be expressed in the terms of Seebeck coefficient, electrical and thermal conductivity. To achieve high conversion efficiency from thermal energy to electrical energy, we have to make a sample with high seebeck coefficient and electrical conductivity, and low thermal conductivity. Most of the metallic fillers have high electrical conductivity and thermal conductivity at the same time. However, when the metallic fillers are dispersed in a polymer matrix, high electrical conductivity and low thermal conductivity can be achieved. That's because a high degree of phonon scattering is promoted while electrons experience very little scattering to maintain the electrical conductivity. We tried to make ceramic thermoelectric material, on the other hand, using the high molecular weight polymer as a scaffold to get the nano- and micro structure of the metal cobaltite materials. |
