Descripción del proyecto
Un factor importante para mejorar la generación de termoelectricidad
La termoelectricidad —que se puede emplear para obtener energía del calor residual— es una tecnología con un uso muy focalizado y con un gran potencial, pero su baja eficiencia limita el uso que se le puede dar. A fin de mejorar la conversión de la energía térmica a eléctrica, el proyecto UncorrelaTEd, financiado con fondos europeos, desarrollará un nuevo modelo con un sistema híbrido diseñado de la forma adecuada. El sistema está compuesto por un sólido poroso termoeléctrico en el que se ha introducido un electrolito líquido. Hasta el momento, los resultados son muy prometedores y ya se ha logrado una mejora sin precedentes en el factor de potencia. Los resultados del proyecto permitirán usar la tecnología termoeléctrica en multitud de aplicaciones, como en los sensores autoalimentados, además de reducir la demanda de baterías, tejidos, fábricas, centrales energéticas y motores de combustión con una gran huella de carbono.
Objetivo
More than 60% of the global power is lost as waste heat. Thermoelectric (TE) materials can convert vast amounts of this waste heat into electricity and significantly contribute to the current energy challenge. Despite large efforts to identify better TE materials, still, the TE technology is limited by low efficiency. One of the two performance improvement routes, thermal conductivity reduction, has already reached its limit, which makes the other route, power factor (PF) improvements, crucial. Current strategies targeting PF enhancement have only reached modest improvements, mainly due to the adverse interdependence of the Seebeck coefficient (S) and the electrical conductivity (σ), which produces a decrease in one of these properties if the other is increased. This is a serious obstacle to achieve the widespread application of the TE technology, since PF=σS^2. UncorrelaTEd will come true the dream of breaking the S-σ correlation by introducing a new paradigm in thermoelectricity that comes from the connection of TEs and electrochemistry, using a properly designed hybrid system, formed by a porous TE solid permeated by a liquid electrolyte. The porous solid provides a low thermal conductivity, whereas the electrolyte tactically interacts with the solid to enlarge the PF. Unprecedented PF improvements (above 35 times) have already been observed by UncorrelaTEd members in this system using a material with modest TE properties. UncorrelaTEd aims at extending these improvements to different materials (bismuth telluride alloys, oxides, and polymers) with state-of-the-art TE properties, potentially leading to an extraordinarily powerful technology able to provide more than 4 times larger PF than state-of-the-art low-mid temperature (<150 ºC) materials and ZTs>3. This will enable the TE technology to be implemented in many areas, such as self-powered sensors, empowering the elimination of batteries, textiles, factories, power plants, and combustion engines.
Ámbito científico
- natural scienceschemical scienceselectrochemistry
- natural sciencesphysical scienceselectromagnetism and electronics
- engineering and technologymaterials engineeringtextiles
- natural scienceschemical sciencesinorganic chemistrypost-transition metals
- engineering and technologyelectrical engineering, electronic engineering, information engineeringelectronic engineeringsensors
Palabras clave
Programa(s)
Convocatoria de propuestas
Consulte otros proyectos de esta convocatoriaConvocatoria de subcontratación
H2020-FETOPEN-2018-2019-2020-01
Régimen de financiación
RIA - Research and Innovation actionCoordinador
12006 Castellon De La Plana
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