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Enhancement of the Thermoelectric Performance of p-Type Layered Oxide Ca3Co4O9+δ Through Heavy Doping and Metallic Nanoinclusions

Authors

  • Ngo Van Nong,

    1. Fuel Cells and Solid State Chemistry Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark, Frederiksborgvej 399, P.O. Box 49, 4000 Roskilde, Denmark
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  • Nini Pryds,

    1. Fuel Cells and Solid State Chemistry Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark, Frederiksborgvej 399, P.O. Box 49, 4000 Roskilde, Denmark
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  • Søren Linderoth,

    Corresponding author
    1. Fuel Cells and Solid State Chemistry Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark, Frederiksborgvej 399, P.O. Box 49, 4000 Roskilde, Denmark
    • Fuel Cells and Solid State Chemistry Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark, Frederiksborgvej 399, P.O. Box 49, 4000 Roskilde, Denmark.
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  • Michitaka Ohtaki

    1. Department of Molecular and Material Sciences, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 816-8580, Japan
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Abstract

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An effective way to improve the thermoelectric performance (ZT) of layered structured oxide materials by carefully choosing heavy ion doping and introducing metallic nanoinclusions is proposed. A p-type oxide material with remarkable highly improved ZT is successfully fabricated using this approach. Long-term durability at high temperature testing confirms this material is a very promising p-type material for high temperature power generation.

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