Moving Electrode Impedance Spectroscopy for Accurate Conductivity Measurements of Corrosive Ionic Media

被引：12
|
作者：
Doppelhammer, Nikolaus [2 ]
Pellens, Nick [1 ]
Martens, Johan [1 ]
Kirschhock, Christine E. A. [1 ]
Jakoby, Bernhard [2 ]
Reichel, Erwin K. [2 ]
机构：
[1] Katholieke Univ Leuven, Ctr Surface Chem & Catalysis Characterizat & Appl, B-3000 Leuven, Belgium
[2] JKU Linz, Inst Microelect & Microsyst, A-4040 Linz, Austria
来源：
ACS SENSORS | 2020年 / 5卷 / 11期
基金：
奥地利科学基金会;
关键词：
conductivity; cell design; electrochemical impedance spectroscopy; adjustable electrode distance; corrosive media; ionic liquids; high accuracy;
D O I：
10.1021/acssensors.0c01465
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A measurement cell for the use of accurate conductivity measurements of corrosive ionic media is presented. Based on the concept of moving electrode electrochemical impedance spectroscopy, exceptional measurement accuracy is achieved in a large conductivity range. Extensive testing with corrosive ionic media demonstrated the robust operation of the cell under harsh chemical conditions, up to temperatures of 130 degrees C. The novel design allows monitoring small conductivity changes during chemical reactions in ionic media, for instance, zeolite formation from hydrated ionic liquids.
引用
收藏
页码：3392 / 3397
页数：6
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