naa a22 4500 510802907 CHVBK 20180411083403.0 cr unu---uuuuu 180411e20130701xx s 000 0 eng 10.1007/s11664-013-2546-7 doi (NATIONALLICENCE)springer-10.1007/s11664-013-2546-7 Effects of Synthesis and Spark Plasma Sintering Conditions on the Thermoelectric Properties of Ca3Co4O9+ δ [Elektronische Daten] [NingYu Wu, Tim Holgate, Ngo Van Nong, Nini Pryds, Søren Linderoth] Ca3Co4O9+δ samples were synthesized by solid-state (SS) and sol-gel (SG) reactions, followed by spark plasma sintering under different processing conditions. The synthesis process was optimized and the resulting materials characterized with respect to their microstructure, bulk density, and thermoelectric transport properties. High power factors of about 400μW/m·K2 and 465μW/m·K2 (at 800°C) were measured for SS and SG samples, respectively. The improved thermoelectric performance of the SG sample is believed to originate from the smaller particle sizes and better grain alignment. The SG method is suggested to be a beneficial means of obtaining high-performance thermoelectric materials of Ca3Co4O9+δ type. TMS, 2013 Thermoelectric nationallicence spark plasma sintering nationallicence Ca3Co4O9+ δ nationallicence solid-state reaction nationallicence sol-gel reaction nationallicence Wu NingYu Department of Energy Conversion and Storage, Technical University of Denmark, Frederiksborgvej 399, 4000, Roskilde, Denmark aut Holgate Tim Department of Energy Conversion and Storage, Technical University of Denmark, Frederiksborgvej 399, 4000, Roskilde, Denmark aut Van Nong Ngo Department of Energy Conversion and Storage, Technical University of Denmark, Frederiksborgvej 399, 4000, Roskilde, Denmark aut Pryds Nini Department of Energy Conversion and Storage, Technical University of Denmark, Frederiksborgvej 399, 4000, Roskilde, Denmark aut Linderoth Søren Department of Energy Conversion and Storage, Technical University of Denmark, Frederiksborgvej 399, 4000, Roskilde, Denmark aut Journal of Electronic Materials Springer US; http://www.springer-ny.com 42/7(2013-07-01), 2134-2142 0361-5235 42:7<2134 2013 42 11664 https://doi.org/10.1007/s11664-013-2546-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11664-013-2546-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wu NingYu Department of Energy Conversion and Storage, Technical University of Denmark, Frederiksborgvej 399, 4000, Roskilde, Denmark aut NATIONALLICENCE 700 1- Holgate Tim Department of Energy Conversion and Storage, Technical University of Denmark, Frederiksborgvej 399, 4000, Roskilde, Denmark aut NATIONALLICENCE 700 1- Van Nong Ngo Department of Energy Conversion and Storage, Technical University of Denmark, Frederiksborgvej 399, 4000, Roskilde, Denmark aut NATIONALLICENCE 700 1- Pryds Nini Department of Energy Conversion and Storage, Technical University of Denmark, Frederiksborgvej 399, 4000, Roskilde, Denmark aut NATIONALLICENCE 700 1- Linderoth Søren Department of Energy Conversion and Storage, Technical University of Denmark, Frederiksborgvej 399, 4000, Roskilde, Denmark aut NATIONALLICENCE 773 0- Journal of Electronic Materials Springer US; http://www.springer-ny.com 42/7(2013-07-01), 2134-2142 0361-5235 42:7<2134 2013 42 11664 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer