6533b872fe1ef96bd12d2f7c
RESEARCH PRODUCT
Giant barocaloric effects over a wide temperature range in superionic conductor AgI
Daniel ErrandoneaNeil D. MathurAraceli AznarJosep-lluís TamaritAntoni PlanesPol LloverasXavier MoyaMichela RomaniniLluís MañosaMaria BarrioClaudio Cazorlasubject
Phase transitionMaterials scienceThermal propertiesScienceHydrostatic pressureGeneral Physics and Astronomy02 engineering and technologyElectrolytePropietats tèrmiques7. Clean energy01 natural sciencesGeneral Biochemistry Genetics and Molecular BiologyIsothermal processArticle0103 physical sciencesThermalMagnetic propertiesFast ion conductorlcsh:Science010306 general physicsAdiabatic processMultidisciplinaryCondensed matter physicsPropietats magnètiquesQGeneral ChemistryAtmospheric temperature rangeCiència dels materials021001 nanoscience & nanotechnologyMaterials science0403 Geologylcsh:Q0210 nano-technologydescription
Current interest in barocaloric effects has been stimulated by the discovery that these pressure-driven thermal changes can be giant near ferroic phase transitions in materials that display magnetic or electrical order. Here we demonstrate giant inverse barocaloric effects in the solid electrolyte AgI, near its superionic phase transition at ~420 K. Over a wide range of temperatures, hydrostatic pressure changes of 2.5 kbar yield large and reversible barocaloric effects, resulting in large values of refrigerant capacity. Moreover, the peak values of isothermal entropy change (60 J K−1 kg−1 or 0.34 J K−1 cm−3) and adiabatic temperature changes (18 K), which we identify for a starting temperature of 390 K, exceed all values previously recorded for barocaloric materials. Our work should therefore inspire the study of barocaloric effects in a wide range of solid electrolytes, as well as the parallel development of cooling devices.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-11-01 | Nature Communications |