Electrochemical moisture analysis by combining oxygen- and proton-conducting ceramic electrolytes

被引：16
|
作者：
Medvedev, Dmitry [1 ,2 ]
Kalyakin, Anatoly [1 ]
Volkov, Alexander [1 ]
Demin, Anatoly [1 ,2 ]
Tsiakaras, Panagiotis [1 ,2 ,3 ]
机构：
[1] Inst High Temp Elect, Lab Elect Devices Based Solid Oxide Proton Elect, Ekaterinburg 620137, Russia
[2] Ural Fed Univ, Ekaterinburg 620002, Russia
[3] Univ Thessaly, Sch Engn, Dept Mech Engn, Pedion Areos, Volos 38334, Greece
来源：
ELECTROCHEMISTRY COMMUNICATIONS | 2017年 / 76卷
关键词：
LaYO3; Humidity; Amperometric analysis; Proton-conducting electrolytes; SOLID-ELECTROLYTE; HYDROGEN SENSOR; HUMIDITY SENSOR; OXIDE; TRENDS; CELLS;
D O I：
10.1016/j.elecom.2017.01.003
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The fabrication and characterization of a new intermediate-temperature electrochemical cell for analyzing moisture concentrations in gas mixtures are discussed in the present investigatioh. The as-fabricated electrochemical cell consists of a diffusion barrier and two ceramic materials based on a yttria-stabilized zirconia (YSZ) electrolyte with unipolar oxygen ion conductivity and a Sr-doped lanthanum yttrate (La0.9Sr0.1YO3-delta, LSY) electrolyte with proton transport properties. The possibility of measuring humidity in a nitrogen atmosphere is demonstrated and the operational capability of the cell is evaluated. The original design of the proposed electrochemical cell opens new opportunities in electrochemical analysis and in the application of proton-conducting electrolytes, including the simultaneous measurement of the concentration and the mutual diffusion coefficient of water in gases. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：55 / 58
页数：4
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