Electrochemical impedance analysis on solid electrolyte oxygen sensor with gas and liquid reference electrodes for liquid LBE

Adhi, Pribadi Mumpuni; Okubo, Nariaki; Komatsu, Atsushi; Kondo, Masatoshi; Takahashi, Minoru

doi:10.1016/j.egypro.2017.09.472

Cited by 6 publications

(2 citation statements)

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“…The use of YSZ instead of MSZ in dynamic conditions is caused by low operating temperatures under dynamic conditions. YSZ has been tested in previous studies for a temperature range of 300-450°C in static conditions and has good accuracy with respect to theoretical calculation values [10]. There are two types of sensors that are used, namely sensor 1 which has an empty space on the inside, and sensor 2 where the empty space is filled by Aremco ceramic adhesive.…”

Section: Structure and Oxygen Sensor Working Principlementioning

confidence: 99%

“…The material selection of the reference electrode influences the performance of the oxygen sensor [9]. A good reference electrode must have a small impedance so that the sensor has a fast response time [10]. Comparison of the performance of sensors using Fe/Fe3O4 and Bi/Bi2O3 as reference electrodes has been carried out in previous studies on static conditions [11,12].…”

Section: Introduction mentioning

confidence: 99%

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Measurement of Oxygen Concentration in Static and Flowing Liquid Pb-Bi by Using Zirconia Based Sensor

Adhi

Kamal

Muslimin

et al. 2020

ijp

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Liquid Lead-Bismuth Eutectic (LBE) has been proposed as one of the coolant for the Generation IV nuclear reactor. However, the oxygen should be controlled adequately to suppress the corrosion rate of the LBE. A device called oxygen sensor made of zirconia as solid electrolyte has been used to monitor the oxygen concentration online in order to control the oxygen concentration. The principle of this sensor is based on electrochemistry method where the difference oxygen activitiy between reference electrode (RE) and working electrode (in liquid LBE) can make potential difference. The potential difference is measured by electrometer and can be converted into oxygen concentration based on Nernst equation. Iron (Fe)/Magnetite (Fe3O4) was used as material for RE in this study. Measurement of oxygen concentration was conducted at 450 - 600°C for the static condition of LBE and around 390°C for the dynamic condition of flowing LBE. The oxygen concentration for both two experiment conditions were set in oxygen saturated condition of Pb-Bi. The oxygen sensor based on zirconia solid electrolyte with Fe/Fe3O4 as RE can measured the oxygen concentration in liquid LBE. The results showed that the measurement was agreed with the Nernst equation theoretical calculation.

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Section: Structure and Oxygen Sensor Working Principlementioning

confidence: 99%