naa a22 4500 510802311 CHVBK 20180411083401.0 cr unu---uuuuu 180411e20130701xx s 000 0 eng 10.1007/s11664-012-2447-1 doi (NATIONALLICENCE)springer-10.1007/s11664-012-2447-1 Effect of Nanostructuring on the Thermoelectric Properties of Co0.97Pd0.03Sb3 [Elektronische Daten] [E. Alleno, M. Gaborit, V. Ohorodniichuk, B. Lenoir, O. Rouleau] We synthesized n-type CeO2/Co0.97Pd0.03Sb3 composites with nanometric grain sizes (200nm to 300nm) by spark plasma sintering in order to promote phonon scattering at grain boundaries. Powdered samples were initially obtained by ball milling Co0.97Pd0.03Sb3 together with x vol.% (x=0, 0.5, 1, 2) of CeO2 nanoparticles. This additive slows down the grain size growth of the skutterudite matrix which occurs during sintering, thereby contributing to phonon scattering. The nanostructured samples display reduced Hall electron concentration compared with that of the reference Co0.97Pd0.03Sb3 because of Fe contamination by the steel balls and vials. However, the electronic transport properties are nearly identical to those of Co0.98Pd0.02Sb3, which allows for comparison with this latter compound. The lattice thermal conductivity is strongly decreased in nano-Co0.97Pd0.03Sb12 (−40% at 300K). This results in an enhanced (+32%) ZT value peaking at 0.65 at 650K in nano-Co0.97Pd0.03Sb12+2% CeO2 when compared with micro-Co0.98Pd0.02Sb3. TMS, 2013 Thermoelectricity nationallicence skutterudite nationallicence composite nationallicence microstructure nationallicence figure of merit nationallicence Alleno E. ICMPE, UMR 7182 CNRS-UPEC, 2-8 rue H. Dunant, 94320, Thiais, France aut Gaborit M. ICMPE, UMR 7182 CNRS-UPEC, 2-8 rue H. Dunant, 94320, Thiais, France aut Ohorodniichuk V. Département Chimie et Physique des Solides et des Surfaces, Ecole Nationale Supérieure des Mines de Nancy, Institut Jean Lamour, Université de Lorraine, CNRS, 54042, Nancy Cedex, France aut Lenoir B. Département Chimie et Physique des Solides et des Surfaces, Ecole Nationale Supérieure des Mines de Nancy, Institut Jean Lamour, Université de Lorraine, CNRS, 54042, Nancy Cedex, France aut Rouleau O. ICMPE, UMR 7182 CNRS-UPEC, 2-8 rue H. Dunant, 94320, Thiais, France aut Journal of Electronic Materials Springer US; http://www.springer-ny.com 42/7(2013-07-01), 1835-1839 0361-5235 42:7<1835 2013 42 11664 https://doi.org/10.1007/s11664-012-2447-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11664-012-2447-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Alleno E. ICMPE, UMR 7182 CNRS-UPEC, 2-8 rue H. Dunant, 94320, Thiais, France aut NATIONALLICENCE 700 1- Gaborit M. ICMPE, UMR 7182 CNRS-UPEC, 2-8 rue H. Dunant, 94320, Thiais, France aut NATIONALLICENCE 700 1- Ohorodniichuk V. Département Chimie et Physique des Solides et des Surfaces, Ecole Nationale Supérieure des Mines de Nancy, Institut Jean Lamour, Université de Lorraine, CNRS, 54042, Nancy Cedex, France aut NATIONALLICENCE 700 1- Lenoir B. Département Chimie et Physique des Solides et des Surfaces, Ecole Nationale Supérieure des Mines de Nancy, Institut Jean Lamour, Université de Lorraine, CNRS, 54042, Nancy Cedex, France aut NATIONALLICENCE 700 1- Rouleau O. ICMPE, UMR 7182 CNRS-UPEC, 2-8 rue H. Dunant, 94320, Thiais, France aut NATIONALLICENCE 773 0- Journal of Electronic Materials Springer US; http://www.springer-ny.com 42/7(2013-07-01), 1835-1839 0361-5235 42:7<1835 2013 42 11664 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer