Recent aspects of oxide thermoelectric materials for power generation from mid-to-high temperature heat source

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    Abstract

    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 Ca 3Co4O9, 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.

    Original languageEnglish
    Pages (from-to)770-775
    Number of pages6
    JournalJournal of the Ceramic Society of Japan
    Volume119
    Issue number1395
    DOIs
    Publication statusPublished - Nov 2011

    All Science Journal Classification (ASJC) codes

    • Ceramics and Composites
    • Chemistry(all)
    • Condensed Matter Physics
    • Materials Chemistry

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