Potentiometric oxygen sensors with excellent sensitivity in a low oxygen concentration range are designed based on intrinsic logarithmic response characteristics, and an asymmetric electrode structure, differentiated from conventional oxygen sensors with reference oxygen gases or parts exposed to air, is implemented. Electrolytes and electrode materials that formulate oxygen sensor devices are evaluated by comprehensively considering their reactivity to trace oxygen, oxygen ion formation, and ease of movement. The sensor using an yttria-stabilized zirconia bulk ceramic electrolyte measures the oxygen concentration in an oxygen-hydrogen mixture down to 0.5%, with a response time of 7.8 s. The sensor with a Nafion proton conductor film and a polyimide gas separation membrane allows room-temperature sensing and measures the oxygen concentration to a minimum of 2%.
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Electrochemical bulk and film-type oxygen sensors: Strategies for detecting extremely low concentration in hydrogen environments
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September 2023
Research Article|
July 27 2023
Electrochemical bulk and film-type oxygen sensors: Strategies for detecting extremely low concentration in hydrogen environments
Soon-Won Jung
;
Soon-Won Jung
(Conceptualization, Data curation, Formal analysis, Writing – original draft, Writing – review & editing)
1
Department of Materials Science and Engineering, Hanbat National University
, Daejeon 34158, Republic of Korea
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Min Hyuk Chang;
Min Hyuk Chang
(Data curation)
1
Department of Materials Science and Engineering, Hanbat National University
, Daejeon 34158, Republic of Korea
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Kyeong-Joon Jo
;
Kyeong-Joon Jo
(Data curation)
1
Department of Materials Science and Engineering, Hanbat National University
, Daejeon 34158, Republic of Korea
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Mi-Hee Jung;
Mi-Hee Jung
(Conceptualization, Funding acquisition, Project administration)
2
Korea Electric Power Corporation, Korea Electric Power Research Institute
, Daejeon 34056, Republic of Korea
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Seung-Yun Lee
Seung-Yun Lee
a)
(Conceptualization, Data curation, Formal analysis, Funding acquisition, Project administration, Resources, Writing – original draft, Writing – review & editing)
1
Department of Materials Science and Engineering, Hanbat National University
, Daejeon 34158, Republic of Korea
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a)
Electronic mail: sy_lee@hanbat.ac.kr
J. Vac. Sci. Technol. B 41, 052201 (2023)
Article history
Received:
March 01 2023
Accepted:
July 06 2023
Citation
Soon-Won Jung, Min Hyuk Chang, Kyeong-Joon Jo, Mi-Hee Jung, Seung-Yun Lee; Electrochemical bulk and film-type oxygen sensors: Strategies for detecting extremely low concentration in hydrogen environments. J. Vac. Sci. Technol. B 1 September 2023; 41 (5): 052201. https://doi.org/10.1116/6.0002631
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