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Harsh operation conditions prevent thermoelectric conversion of waste heat into electricity

PhD defence, Friday, 5 November 2021, Lasse Rabøl Jørgensen.

2021.11.05 | Karen Konradi

Lasse Rabøl Jørgensen

The stability of a thermoelectric material is being tested in the custom-made setup, which is mounted at one of the most intense X-ray sources in the world, namely the synchrotron PETRA-III in Hamburg

During his PhD studies, Lasse Rabøl Jørgensen has researched materials, which are capable of converting between thermal and electrical energy, so-called thermoelectric materials. During energy conversion, the materials are often exposed to high temperatures and an electrical current, which puts strict requirements on the stability of the materials. In this research project, Lasse Rabøl Jørgensen has worked on a test equipment, where thermoelectric materials can be illuminated by X-ray radiation while being exposed to operation conditions. This piece of equipment has given insights into the atomic behavior ultimately leading to decomposition in a number of thermoelectric materials.  

The first step towards a solution is to understand the fundamental mechanisms at play. Here, the obtained research results will bring us closer to designing reliable thermoelectric materials, which are capable of harvesting some of the vast amounts of waste heat produced in e.g. vehicles and power plants.

The PhD study was completed at Department of Chemistry, Faculty of Natural Sciences, Aarhus University.

This summary was prepared by the PhD student.

Time: Friday, 5th of November at 1:15 pm
Place: Building 1514, room 213, Lecture Theatre Auditorium I, Department of Chemistry, Aarhus University, Langelandsgade 140, 8000 Aarhus C
The PhD defence will be held online. To receive a link to the event, please send an e-mail to Bo Brummerstedt Iversen, bo@chem.au.dk.
Title of PhD thesis: Stability of Thermoelectric Materials

Contact information: Lasse Rabøl Jørgensen, e-mail: lasserj@chem.au.dk, tel.: +45 27519811

Members of the assessment committee:

Professor Antoine Maignan, ENSICAEN-CRISMAT, CNRS, France

Professor Muhammet Toprak, Royal Institute of Technology, KTH, Sweden

Lector Tobias Weidner (chairman), Department of Chemistry, Aarhus University, Denmark


Main supervisor:
Professor Bo Brummerstedt Iversen, Department of Chemistry, Aarhus University, Denmark


The defence is public.
The PhD thesis is available for reading at the Graduate School of Natural Sciences/GSNS,

Katrinebjergvej 89F, building 5132, 8200 Aarhus N.

PhD defence
16882 / i43