The use of thermoelectric generators (TEG) for the conversion of thermal energy into electric energy aims at increasing the overall efficiency of a plant/system by the energy recovery of waste heat.
The absence of moving parts and thus low maintenance, the high reliability and small dimensions make TEGs as good candidates in remote applications such as gas pipelines.
The basic unit of thermoelectric conversion consists of two different semiconductor materials connected as a thermocouple and the final device is a module consisting of a suitable number of these pairs.
The worlwide research is focused on improving the figure of merit ZT of these components. Recent studies demonstrated the feasibility of combining the thermoelectric conversion technology to various heat sources (solar, coal, industrial waste heat) within the co-generation in medium-high temperature range. The ICMATE activity in recent years was focused on this topic, studying thermoelectric materials based on silicides that convert heat at 600°C to electricity.
And we went further, with the design and development of components for the realization of a thermoelectric module based on silicides, with the development of electrodes and with the design and development of an equipment to measure the contact resistance. We have also developed a testing device oriented to the maximum flexibility, based on the heat flow meter method at the cold side of the module operating in vacuum (from RT up to 800 K) or inert atmosphere to test modules with a footprint up to 60x60 mm2.
thermoelectric materials and modules magnesium and manganese silicides tetrahedrites synthesis thermoelectric characterization TEG modules contact resistance testing of TEG modules at intermediat temperatures
S. Fiameni, A. Famengo, S. Boldrini, S. Battiston, M. Saleemi, M. Stingaciu, M. Jhonsson, S. Barison, M. Fabrizio
Introduction of metal oxides in Mg2Si thermoelectric materials by Spark Plasma Sintering
(2013) Journal of Electronic Materials 42(7), 2062-2066
S. Boldrini, A. Famengo, F. Montagner, S. Battiston, S. Fiameni, M. Fabrizio, S. Barison
Test rig for high temperature thermopower and electrical conductivity measurements
(2013) Journal of Electronic Materials 42(7), 1319-1323
S. Fiameni, A. Famengo, F. Agresti, S. Boldrini, S. Battiston, M. Saleemi, M. Johnsson, M. S. Toprak, M. Fabrizio
Effect of Synthesis and Sintering Conditions on the Thermoelectric Properties of n-Doped Mg2Si
Journal of Electronic Materials (2014), 43, 2301-2306
M. Saleemi, A. Famengo, S. Fiameni, S. Boldrini, S. Battiston, M. Johnsson, M. Muhammed, M. S. Toprak
Thermoelectric performance of higher manganese silicide nanocomposites
Journal of Alloys and Compounds (2015), 619, 31-37
A. Ferrario, S. Battiston, S. Boldrini, A. Miozzo, S. Fiameni, T. Sakamoto, E. Miorin, T. Iida, M. Fabrizio
Mechanical and electrical characterization of low-resistivity contact materials for Mg2Si
Materials Today: Proceedings (2015), 2(2), 573-582
- S. Fiameni, A. Famengo, S. Boldrini, S. Battiston, M. Saleemi, M. Stingaciu, M. Jhonsson, S. Barison, M. Fabrizio
- Accordo di Programma CNR-Ministero dello Sviluppo Economico per la Ricerca di Sistema Elettrico
- KTH Royal Institute of Technology (Sweden)
- Tokyo University of Science (Japan)
- CNR ITC