Descripción del proyecto
Tecnologías de refrigeración para un futuro más ecológico
La necesidad urgente de alternativas de refrigeración sostenibles nunca ha estado tan clara. Los sistemas tradicionales de refrigeración, que dependen de la compresión y liberación de potentes gases de efecto invernadero, se han convertido en los principales responsables del calentamiento global. Con el apoyo de las Acciones Marie Skłodowska-Curie, el equipo del proyecto SCOPE pretende revolucionar la forma en que mantenemos frías las cosas. Los materiales calóricos, una clase de sustancias conocidas por sus propiedades térmicas únicas, están en el centro de esta labor: ofrecen una refrigeración eficiente desde el punto de vista energético sin emisiones nocivas. Entre estos materiales, los barocalóricos (BC) destacan por sus impresionantes efectos calóricos y su resistencia estructural. En general, en SCOPE se explora la sinergia de la presión y los campos eléctricos en materiales barocalóricos polares. Aprovechando estos efectos multicalóricos, se mejorará la eficacia y la reversibilidad de la refrigeración por BC.
Objetivo
There is an increasing need to find novel and sustainable alternatives to current dominating cooling systems. These systems are based on the compression and expansion of powerful greenhouse polluters and thus contribute notably to global warming when released to the atmosphere. Caloric materials, which display thermal changes upon variations on the corresponding applied field, are promising candidates because 1) they can be energy efficient and 2) do not compel the direct use of greenhouse gases. Among the different caloric families, those sensitive to hydrostatic pressure (barocalorics (BC)) are of particular interest because of the wide range of candidates, their very large caloric effects and no mechanical breakdown. Nevertheless, BC materials suffer from high intrinsic irreversibilities that limit their caloric efficiency. Interestingly, some BC materials exhibit ferroelectric transitions that make them sensitive to the application of electric fields and, hence, display electrocaloric (EC) effects as well. The goal of this MSCA project is thus to take advantage of multicaloric effects to improve the caloric performance in polar barocaloric materials. To do so, for the first time we will simultaneously apply pressure and an electric field to these materials by performing unprecedented experiments of calorimetry and dielectric spectroscopy under these two fields. From these measurements, we will be able to define novel multicaloric routes to enhance the reversibility and, thus, report improved caloric performances. Additionally, a detailed characterisation of the lattice dynamics will be performed to understand the physical origin of these novel multicaloric strategies. This proposal joins the expertise in barocalorics of the Host Group and the expertise in electrocalorics of the Applicant. The successful achievement of our proposal will represent a breakthrough in the material science community, both at the fundamental and applied level.
Ámbito científico
Palabras clave
Programa(s)
- HORIZON.1.2 - Marie Skłodowska-Curie Actions (MSCA) Main Programme
Régimen de financiación
HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European FellowshipsCoordinador
08034 Barcelona
España