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

Adhi, P. M.*; Okubo, Nariaki ; Komatsu, Atsushi ; Kondo, Masatoshi*; Takahashi, Minoru*

The ionic conductivity of solid electrolyte may insufficient, and the sensor output signal will deviate from the theoretical one in low temperature. The performance of oxygen sensor with Ag/air reference electrode (RE) and liquid Bi/Bi $_{2}$ O $_{3}$ RE was tested in low-temperature LBE at 300450 $^{circ}$ C and the charge transfer reactions impedance at the electrode-electrolyte interface was analyzed by electrochemical impedance analysis (EIS). After steady state condition, both of the sensors performed well and can be used at 300450 $^{circ}$ C. Bi/Bi/Bi $_{2}$ O $_{3}$ RE has lower impedance than Ag/air RE. Therefore, the response time of the oxygen sensor with Bi/Bi/Bi $_{2}$ O $_{3}$ RE is faster than the oxygen sensor with Ag/air RE in the low-temperature region.

Language	:	English
Journal	:	Energy Procedia
Volume	:	131
Number	:
Pages	:	p.420 - 427
Publication Year/Month	:	2017/12
Meeting title	:	5th International Symposium on Innovative Nuclear Energy Systems (INES-5)
Held date	:	2016/10
Location (city)	:	Tokyo
Location (country)	:	Japan
Patent information	:
PDF	:
Paper URL	:	https://doi.org/10.1016/j.egypro.2017.09.472
DOI for research data	:
Keywords	:	Solid electrolyte sensor; Electrochemical Impedance Spectroscopy; Lead-bismuth Eutectic; Accelerator Driven System
Research Facility	:
Press Release	:
Article of JAEA R&D Review	:
Cooperating Institute	:	東京工業大学

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Registration No. : BB20181277
JAEA Abstracts No. : 46001057
Paper Submission No. : 20621

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