Receptor Functions of Metal‐Carbonates for Solid‐Electrolyte Impedancemetric Gas Sensor

Receptor functions of metal‐carbonates for solid‐electrolyte impedancemetric gas sensor based on Li‐ionic conductor (Li 1.5 Al 0.5 Ti 1.5 [PO 4 ] 3 ) were studied. It was revealed that sensors attached with metal‐carbonate receptors rarely responded to CO 2 , on the contrary, they well responded to...

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Bibliographic Details
Published in:IEEJ transactions on electrical and electronic engineering 2023-12, Vol.18 (12), p.1964-1966
Main Authors: Baba, Yusuke, Hasegawa, Yuhei, Takase, Satoko, Shimizu, Youichi
Format: Article
Language:English
Subjects:
Calcium carbonate
Carbonates
Gas sensors
Lithium carbonate
Nitrogen dioxide
Receptors
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Summary:Receptor functions of metal‐carbonates for solid‐electrolyte impedancemetric gas sensor based on Li‐ionic conductor (Li 1.5 Al 0.5 Ti 1.5 [PO 4 ] 3 ) were studied. It was revealed that sensors attached with metal‐carbonate receptors rarely responded to CO 2 , on the contrary, they well responded to NOx. In addition, it was found that the responses to NOx differed depending on the metal‐carbonates. The sensor using the binary carbonate (Li 2 CO 3  + CaCO 3 ) receptor showed high NO 2 sensitivity and different NO responses at 300 °C, 50 Hz, i.e., other devices responded to NO 2 and NO with same direction, while the binary carbonates (Li 2 CO 3  + CaCO 3 ) system responded to NO 2 and NO in the opposite direction, which should give selective detection among NO and NO 2 . © 2023 Institute of Electrical Engineer of Japan and Wiley Periodicals LLC.
ISSN:1931-4973
1931-4981
DOI:10.1002/tee.23916