多孔材料 EIS 和 DIS 光谱中的弥散现象及其作为传输线基础 "扩散 "元素的表示方法--第二部分--质子导体案例研究

IF 2.5 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY
Piotr Ryś, Jacek Kowalczyk, Maja Mroczkowska-Szerszeń, Marcin Kaczkan, Karolina Majewska, Piotr Moszczyński, Wojciech Pudełko, Maciej Siekierski
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引用次数: 0

摘要

材料的孔隙率,可以理解为一个整体平均参数,也可以理解为与孔径分布相关的数据,是包括质子导电玻璃在内的众多功能材料的一个重要质量指标。虽然大多数用于评估孔隙率的现有技术都不能用于监测 "活 "系统在操作条件下的行为,但可以使用电化学惰电光谱(EIS)来实现这一目的。不过,对这些系统的分析仍然需要使用基于传输线的模型进行近似分析,这些模型可以等同于特定的扩散元素参数,而扩散元素参数又可以与所研究的多孔材料的质量相关联。这些参数的变化可与脱水和相变等各种过程或材料的加工历史相关联。在这部分材料中,我们介绍了高度研磨、机械化学处理的粉末压制质子导体的案例研究:磷酸盐硅酸盐玻璃和两种铀基化合物--羟基磷酸盐(HUP)和羟基砷酸盐,证明质子传输材料的色散特性可与其脱水过程相关联,并通过傅立叶变换红外光谱和太赫兹时域光谱对脱水过程进行了跟踪。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Dispersion phenomena in EIS and DIS spectra of porous materials and their representation as transmission line bases ‘diffusion’ elements– part II - a case study of proton conductors

Porosity of materials, understood as an overall averaged parameter or as the pore-size distribution related data is an important quality of numerous functional materials including proton conductive glasses. While most of the existing techniques applied for its assessment cannot be used to monitor the behaviour of ‘live’ systems in operando conditions, it is possible to use Electrochemical Immittance Spectroscopy (EIS) for this purpose. Nevertheless, analysis of these systems still requires an approximation made using transmission lines based models, which can be equated to specific diffusion elements parameters, which can in turn be related to qualities of the porous material investigated. The changes of these parameters can be correlated with various processes– such as dehydration and phase transitions or to the material’s processing history. In this part of the material we present a case study of highly grinded, mechanochemically processed powder-pressed proton conductors: phosphate-silicate glass and two uranyl based compounds– hydroxy phosphate (HUP) and hydroxy arsenate, delivering proof that the dispersive properties of proton transporting materials can be correlated with their dehydration processes, which were followed by means of FT-IR and terahertz time domain spectroscopies.

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来源期刊
Applied Physics A
Applied Physics A 工程技术-材料科学:综合
CiteScore
4.80
自引率
7.40%
发文量
964
审稿时长
38 days
期刊介绍: Applied Physics A publishes experimental and theoretical investigations in applied physics as regular articles, rapid communications, and invited papers. The distinguished 30-member Board of Editors reflects the interdisciplinary approach of the journal and ensures the highest quality of peer review.
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