A new potentiometric SO2 sensor based on Li3PO4 electrolyte film and its response characteristics

H. Wang; Z. Liu; D. Chen; Z. Jiang

doi:10.1063/1.4927173

A new potentiometric SO₂ sensor based on Li₃PO₄ electrolyte film and its response characteristics

H. Wang
, Z. Liu
, D. Chen
, Z. Jiang

School of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

A potentiometric SO₂ gas sensor based on Li₃PO₄ solid electrolyte has been developed using Au as the reference electrode and Li₂SO₄/V₂O₅ as the sensing electrode. The Li₃PO₄ film was deposited on Al₂O₃ substrate by resistance heating evaporation. Two Au films with designed patterns were formed on the Li₃PO₄ film by micro-fabrication technologies. The sensing electrode covers one electrode partly using thick-film technology. The electromotive force values between the sensing electrode and the reference electrode were measured and various characteristics were studied including sensitivity, response characteristics, and stability and selectivity. According to the results, we conclude that an optimal working temperature of the SO₂ sensor is 500°C, the measurement range is 0-100 ppm, the sensitivity is about 32.47 mV/dec, the response and the recovery time is about 5 min and 10 min, respectively. And the stability and the selectivity of the sensor are good, making it have potential in SO₂ measurement of living environment.

Original language	English
Article number	075007
Journal	Review of Scientific Instruments
Volume	86
Issue number	7
DOIs	https://doi.org/10.1063/1.4927173
State	Published - 1 Jul 2015

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title = "A new potentiometric SO2 sensor based on Li3PO4 electrolyte film and its response characteristics",

abstract = "A potentiometric SO2 gas sensor based on Li3PO4 solid electrolyte has been developed using Au as the reference electrode and Li2SO4/V2O5 as the sensing electrode. The Li3PO4 film was deposited on Al2O3 substrate by resistance heating evaporation. Two Au films with designed patterns were formed on the Li3PO4 film by micro-fabrication technologies. The sensing electrode covers one electrode partly using thick-film technology. The electromotive force values between the sensing electrode and the reference electrode were measured and various characteristics were studied including sensitivity, response characteristics, and stability and selectivity. According to the results, we conclude that an optimal working temperature of the SO2 sensor is 500°C, the measurement range is 0-100 ppm, the sensitivity is about 32.47 mV/dec, the response and the recovery time is about 5 min and 10 min, respectively. And the stability and the selectivity of the sensor are good, making it have potential in SO2 measurement of living environment.",

author = "H. Wang and Z. Liu and D. Chen and Z. Jiang",

note = "Publisher Copyright: {\textcopyright} 2015 AIP Publishing LLC.",

year = "2015",

month = jul,

day = "1",

doi = "10.1063/1.4927173",

language = "英语",

volume = "86",

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issn = "0034-6748",

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T1 - A new potentiometric SO2 sensor based on Li3PO4 electrolyte film and its response characteristics

AU - Wang, H.

AU - Liu, Z.

AU - Chen, D.

AU - Jiang, Z.

PY - 2015/7/1

Y1 - 2015/7/1

N2 - A potentiometric SO2 gas sensor based on Li3PO4 solid electrolyte has been developed using Au as the reference electrode and Li2SO4/V2O5 as the sensing electrode. The Li3PO4 film was deposited on Al2O3 substrate by resistance heating evaporation. Two Au films with designed patterns were formed on the Li3PO4 film by micro-fabrication technologies. The sensing electrode covers one electrode partly using thick-film technology. The electromotive force values between the sensing electrode and the reference electrode were measured and various characteristics were studied including sensitivity, response characteristics, and stability and selectivity. According to the results, we conclude that an optimal working temperature of the SO2 sensor is 500°C, the measurement range is 0-100 ppm, the sensitivity is about 32.47 mV/dec, the response and the recovery time is about 5 min and 10 min, respectively. And the stability and the selectivity of the sensor are good, making it have potential in SO2 measurement of living environment.

AB - A potentiometric SO2 gas sensor based on Li3PO4 solid electrolyte has been developed using Au as the reference electrode and Li2SO4/V2O5 as the sensing electrode. The Li3PO4 film was deposited on Al2O3 substrate by resistance heating evaporation. Two Au films with designed patterns were formed on the Li3PO4 film by micro-fabrication technologies. The sensing electrode covers one electrode partly using thick-film technology. The electromotive force values between the sensing electrode and the reference electrode were measured and various characteristics were studied including sensitivity, response characteristics, and stability and selectivity. According to the results, we conclude that an optimal working temperature of the SO2 sensor is 500°C, the measurement range is 0-100 ppm, the sensitivity is about 32.47 mV/dec, the response and the recovery time is about 5 min and 10 min, respectively. And the stability and the selectivity of the sensor are good, making it have potential in SO2 measurement of living environment.

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VL - 86

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

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A new potentiometric SO₂ sensor based on Li₃PO₄ electrolyte film and its response characteristics

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