Soret Effect of Ionic Liquid Gels for Thermoelectric Conversion,The Journal of Physical Chemistry Letters

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Soret Effect of Ionic Liquid Gels for Thermoelectric Conversion
The Journal of Physical Chemistry Letters ( IF 4.8 ) Pub Date : 2022-11-16 , DOI: 10.1021/acs.jpclett.2c02645
Hanlin Cheng ₁ , Jianyong Ouyang _{1,

2}

Affiliation

Cations and anions can accumulate at the two ends of an ionic conductor under temperature gradient, which is the so-called Soret effect. This can generate a voltage between the two electrodes, and the thermopower can be higher than that of the electronic conductors because of the Seebeck effect by 1–2 orders in magnitude. The thermoelectric properties of ionic conductors depend on the ionic thermopower, ionic conductivity, and thermal conductivity. Compared with other ionic conductors, like liquid electrolytes and hydrogels, ionogels made of an ionic liquid and a gelator can have the advantages of high thermopower and high stability. Great progress was recently made to improve the ionic conductivity and/or ionic thermopower of ionogels. They can be used in ionic thermoelectric capacitors (ITECs) to harvest heat. In addition, they can be integrated with electronic thermoelectric materials to harvest heat from both temperature gradient and temperature fluctuation, which can be caused by waste heat.

中文翻译：

用于热电转换的离子液体凝胶的 Soret 效应

在温度梯度作用下，阳离子和阴离子可以聚集在离子导体的两端，这就是所谓的 Soret 效应。这可以在两个电极之间产生电压，并且由于塞贝克效应，热电势可以比电子导体高 1-2 个数量级。离子导体的热电性质取决于离子热电势、离子电导率和热导率。与液体电解质和水凝胶等其他离子导体相比，由离子液体和凝胶剂制成的离子凝胶具有热电势高和稳定性高的优点。最近在提高离子凝胶的离子电导率和/或离子热电势方面取得了很大进展。它们可用于离子热电电容器 (ITEC) 以收集热量。此外，

更新日期：2022-11-16

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