A new generation of p-type didymium skutterudites with high ZT

Autor(en)

Gerda Rogl, Andrij Grytsiv, Peter Franz Rogl, Ernst Bauer, Michael Zehetbauer

Abstrakt

This work evaluates the influence of single, double and triple filling of didymium, Ca and Ba in Fe4Sb12 as well as in Fe3CoSb12 on the thermoelectric performance. Various filling levels, as well as various preparation methods and nanostructuring were used to improve the thermoelectric performance. It is shown that samples prepared via ball milling have a higher ZT (ZT = 1.1) than their hand milled counterparts (ZT approximate to 0.8). Co/Fe-substituted samples have ZT > 1.2 i.e. 25% higher than samples without Co, an average ZT up to 0.93 and an efficiency up to 14% for the temperature gradient of 300-800 K. With this good thermoelectric performance in such a wide temperature range these materials are hitherto the best p-type skutterudites for thermoelectric devices.

Organisation(en)

Institut für Physikalische Chemie, Physik Nanostrukturierter Materialien

Externe Organisation(en)

Technische Universität Wien

Journal

Intermetallics

Band

19

Seiten

546-555

Anzahl der Seiten

10

ISSN

0966-9795

DOI

https://doi.org/10.1016/j.intermet.2010.12.001

Publikationsdatum

2011

Peer-reviewed

Ja

ÖFOS 2012

104017 Physikalische Chemie, 1030 Physik, Astronomie, 210006 Nanotechnologie, 103018 Materialphysik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/9735c1d7-28c0-4649-9a97-9051d2424d18