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학술지 A Solid Electrolyte Potentiometric CO2 Gas Sensor Composed of Lithium Phosphate as both the Reference and the Solid Electrolyte Material
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저자
이형근, 최낙진, 문승언, 양우석, 김종대
발행일
201210
출처
한국물리학회, v.61 no.6, pp.938-941
ISSN
0374-4884
출판사
한국물리학회
DOI
https://dx.doi.org/10.3938/jkps.61.938
협약과제
12MB2400, 스마트&그린 빌딩용 자가충전 지능형 센서노드 플랫폼 핵심기술 개발, 김종대
초록
A solid electrolyte potentiometric CO 2 gas sensor has been considered as a candidate for miniaturization into a micro-sensor form. However, the solid electrolyte potentiometric CO 2 gas sensor is composed of three components: a reference, a sensing material, and a solid electrolyte. This study reports the fabrication of a solid electrolyte potentiometric CO 2 gas sensor with a native reference material from the solid electrolyte (Li 3PO 4), which means one component of the sensor can be omitted and the fabrication process can be simplified compared to the process for a conventional solid electrolyte potentiometric CO 2 gas sensor. The sensor containing Li 3PO 4, which acted as the reference material as well as the sensing material, showed a comparable response (75 mV/dec at 500 °C) to CO 2 gas when we compared the sensor with a conventional solid electrolyte CO 2 gas sensor (73 mV/dec at 500 °C) with a coplanar configuration containing Li 2TiO 3 as the reference material and Li 3PO 4 as the solid electrolyte. © 2012 The Korean Physical Society.
키워드
Carbon dioxide, Gas sensor, Potentiometric sensor, Solid electrolyte
KSP 제안 키워드
Co 2, Electrolyte material, Micro-sensor, Potentiometric Sensor, Reference material, Sensing material, Solid electrolyte, Three components, carbon dioxide, coplanar configuration, fabrication process