The search for sustainable energy sources is currently increasing due to global warming and climate change.
The search for sustainable energy sources is currently increasing due to global warming and climate change.
THERMOELECTRICITY offers a way to recover and convert the energy that is wasted as heat into easily available electric energy.
THERMOELECTRICITY offers a way to recover and convert the energy that is wasted as heat into easily available electric energy.
High thermoelectric performance of a material requires the uncommon combination of high Seebeck coefficient (S) and high electrical conductivity (σ) together with low thermal conductivity (κ = κL + κe). This last includes the contributions of the lattice thermal conductivity (κL) and the electronic thermal conductivity (κe).
High thermoelectric performance of a material requires the uncommon combination of high Seebeck coefficient (S) and high electrical conductivity (σ) together with low thermal conductivity (κ = κL + κe). This last includes the contributions of the lattice thermal conductivity (κL) and the electronic thermal conductivity (κe).
There is a deep search for new materials with improved thermoelectric efficiency. Representative examples are Bi2Te3, PbTe, SiGe, GeTe, Zintl phases, metal silicides, skutterudites, half-Heusler alloys, clathrates or transition metal oxides.
There is a deep search for new materials with improved thermoelectric efficiency. Representative examples are Bi2Te3, PbTe, SiGe, GeTe, Zintl phases, metal silicides, skutterudites, half-Heusler alloys, clathrates or transition metal oxides.
Thermoelectric materials are usually synthesized by a prolonged annealing process (days) of stoichiometric amounts of high-purity precursors. This effective method presents some disadvantages (operation at high temperatures, difficult control of the stoichiometry when using volatile reagents, high energy and time consuming process). Consequently, there is a strong motivation to find alternative process, where the energy requirements for the synthesis and the reaction time are considerably minimized. Our group is exploring "Fast Chemistry" methods, such as ball-milling, high-pressure or microwave-assisted synthesis, for the development of nanostructured thermoelectric materials.
Thermoelectric materials are usually synthesized by a prolonged annealing process (days) of stoichiometric amounts of high-purity precursors. This effective method presents some disadvantages (operation at high temperatures, difficult control of the stoichiometry when using volatile reagents, high energy and time consuming process). Consequently, there is a strong motivation to find alternative process, where the energy requirements for the synthesis and the reaction time are considerably minimized. Our group is exploring "Fast Chemistry" methods, such as ball-milling, high-pressure or microwave-assisted synthesis, for the development of nanostructured thermoelectric materials.
J. Prado-Gonjal et al. Optimizing Thermoelectric Properties through Compositional Engineering in Ag-Deficient AgSbTe2 Synthesized by Arc Melting. ACS Applied Electronic Materials, 2024. https://doi.org/10.1021/acsaelm.3c01653
M. González-Barrios et al. Microwave-assisted synthesis of thermoelectric oxides and chalcogenides. Ceramics International. https://doi.org/10.1016/j.ceramint.2022.01.096
J. Prado-Gonjal et al. High thermoelectric performance of rapidly microwave-synthesized Sn1-δS. Mater. Adv., 2020, 1, 845-853 https://doi.org/10.1039/D0MA00301H
J. Gainza et al. Unveiling the Correlation between the Crystalline Structure of M‐Filled CoSb3 (M= Y, K, Sr) Skutterudites and Their Thermoelectric Transport Properties. Adv. Funct. Mater., 2020, 2001651. https://doi.org/10.1002/adfm.202001651
TED2021-129569A-I00 (MATTER project)
CNS2022-135302 (TERMADES project)
PR65/19-22459 UCM-CM
PR65/19-22459 UCM-CM
