2011/01/01 by Michitaka Ohtaki · 3 citations
Materials Science · Engineering · #Advanced Thermoelectric Materials and Devices #Thermal Expansion and Ionic Conductivity #Thermal Radiation and Cooling Technologies #Materials science #Thermoelectric effect #Thermoelectric materials #Oxide #Ceramic #Cobalt oxide #Phonon scattering #Thermal conductivity #Thermoelectric generator #Engineering physics #Nanostructure #Seebeck coefficient #Nanotechnology #Metallurgy #Composite material #Thermodynamics
paper · pdf · doi:10.2109/jcersj2.119.770
openalex publication_date 2011/01/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/31
Rapid progress in thermoelectric performance of oxide materials has been conducted virtually exclusively in Japan, resulting in more than 10 times increase in the ZT values of oxides within the last two decades. This has caused a revolutionary change in the guiding principles of thermoelectric materials research, in which oxide materials had been disregarded as a potential candidate until early 1990s. Promising oxide thermoelectric materials having been discovered include CaMnO3-based perovskites, Al-doped ZnO, layered cobalt oxides represented by NaCo2O4 and Ca3Co4O9, and SrTiO3-related phases. This paper reviews the current aspects of oxide thermoelectric materials, and some strategies of nanostructure control for selective reduction of the lattice thermal conductivity (selective phonon scattering) in bulk oxide ceramics will also be discussed.