期刊
ADVANCED ENERGY MATERIALS
卷 13, 期 9, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/aenm.202203692
关键词
devices; ionic thermoelectrics; materials; thermo-electrochemical
Ionic thermoelectrics (i-TEs) show exceptional thermoelectric properties and have sparked great interest as a promising technique to convert low-grade waste heat into usable energy. This review provides a comprehensive overview of i-TE materials and devices, including their fundamental effects, performance, manipulation techniques, and assembly methods. The potential practical applications of i-TE devices are also discussed, highlighting the potential to transform waste heat recycling.
As an extended member of the thermoelectric family, ionic thermoelectrics (i-TEs) exhibit exceptional Seebeck coefficients and applicable power factors, and as a result have triggered intensive interest as a promising energy conversion technique to harvest and exploit low-grade waste heat (<130 degrees C). The last decade has witnessed great progress in i-TE materials and devices; however, there are ongoing disputes about the inherent fundamentals and working mechanisms of i-TEs, and a comprehensive overview of this field is required urgently. In this review, the prominent i-TE effects, which set the ground for i-TE materials, or more precisely, thermo-electrochemical systems, are first elaborated. Then, TE performance, capacitance capability, and mechanical properties of such system-based i-TE materials, followed by a critical discussion on how to manipulate these factors toward a higher figure-of-merit, are examined. After that, the prevalent molding methods for assembling i-TE materials into applicable devices are summarized. To conclude, several evaluation criteria for i-TE devices are proposed to quantitatively illustrate the promise of practical applications. It is therefore clarified that, if the recent trend of developing i-TEs can continue, the waste heat recycling landscape will be significantly altered.
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