论文部分内容阅读
近年来,具有诸多新的物理性质和优良热电性能的类液态材料获得了研究人员的广泛关注。离子电导率对理解这类热电材料中的离子迁移行为非常关键。但是,由于类液态热电材料中的离子电导率在总电导率中的贡献很小,因此很难利用传统方法精确测量其离子电导率。本研究基于Yokota提出的离子阻挡法,尝试利用自主搭建的设备测量类液态热电材料的离子电导率。本文详细介绍了该设备的基本构造、测试原理以及测试步骤,分析了帕尔贴效应/塞贝克效应、离子析出、电压测试点的位置和氧化挥发等因素对测试准确性的影响,并提出了相应的解决方案,成功测量了几种具有代表性的类液态热电材料的离子电导率。
In recent years, liquid-like materials with many new physical properties and excellent thermoelectric properties have attracted the attention of researchers. Ionic conductivity is critical to understanding ion mobility in such thermoelectric materials. However, since ionic conductivity in a liquid-like thermoelectric material does not contribute much to the total conductivity, it is difficult to accurately measure its ionic conductivity using conventional methods. Based on Yokota’s ion block method, this study attempts to measure the ionic conductivity of a liquid-like thermoelectric material using an independently constructed device. This paper introduces the basic structure, test principle and test procedure of this equipment in detail, analyzes the influence of Peltier effect / Seebeck effect, ion precipitation, the location of voltage test point and oxidation volatility on the test accuracy. The corresponding solutions have successfully measured the ionic conductivities of several representative liquid-like thermoelectric materials.