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  • Thermal rectification in multilayer phase change material structures for energy storage applications [Elektronski vir]
    Swoboda, Timm ...
    Solid-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.
    Source: iScience [Elektronski vir]. - ISSN 2589-0042 (Vol. 24, iss. 8, 2021, str. 1-14)
    Type of material - e-article
    Publish date - 2021
    Language - english
    COBISS.SI-ID - 72781059