Thermal rectification in multilayer phase change material structures for energy storage applicationsSwoboda, Timm (Avtor) Klinar, Katja (Avtor) Abbasi, Shahzaib (Avtor) Brem, Gerrit (Avtor) Kitanovski, Andrej (Avtor) Muñoz Rojo, Miguel (Avtor) energy engineeringmaterials scienceenergy materialsthermal control devicethermal diodeheat storageSolid-state thermal control devices that present an asymmetric heat flow depend-ing on thermal bias directionality, referred to as thermal diodes, have recentlyreceived increased attention for energy management. The use of materials thatcan change phase is a common approach to design thermal diodes, but typicalsizes, moderate rectification ratios, and narrow thermal tunability limit their po-tential applications. In this work, we propose a multilayer thermal diode made ofa combination of phase change and invariant materials. This device presentsstate-of-the-art thermal rectification ratios up to 136% for a temperature rangebetween 300 K and 500 K. Importantly, this design allows to switch betweendistinct rectification states that can be modulated with temperature, achievingan additional degree of thermal control compared with single-rectification-statedevices. We analyze the relevance of our thermal diodes for retaining heat moreefficiently in thermal storage elements.20212021-08-11 13:05:19Članek v reviji128882UDK: 536:620.1/.2ISSN pri članku: 2589-0042DOI: 10.1016/j.isci.2021.102843COBISS_ID: 72781059sl