Enhanced accuracy of palladium-nickel alloy based hydrogen sensor by in situ temperature compensation

•The PdNi hydrogen sensor shows excellent response to H2 with concentration from 0.02% to 40% at room temperature.•An insitu temperature compensation method of the PdNi hydrogen sensor response is presented in this work.•After applying the algorithm, the sensor exhibits enhanced H2 sensing accuracy...

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Bibliographic Details
Published inSensors and actuators. B, Chemical Vol. 299; p. 126989
Main Authors Yu, Kun, Tian, Xianqing, Wang, Xinfeng, Yang, Fang, Qi, Tianjiao, Zuo, Ji
Format Journal Article
LanguageEnglish
Published Lausanne Elsevier B.V 15.11.2019
Elsevier Science Ltd
Subjects
Accuracy
Algorithms
Chemical sensors
Enhanced accuracy
Hydrogen
Hydrogen sensor
Nickel base alloys
Palladium
PdNi alloy
Platinum
Sensors
Temperature compensation
Temperature sensors
Thin films
Enhanced accuracy
Hydrogen sensor
Temperature compensation
PdNi alloy
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Summary:•The PdNi hydrogen sensor shows excellent response to H2 with concentration from 0.02% to 40% at room temperature.•An insitu temperature compensation method of the PdNi hydrogen sensor response is presented in this work.•After applying the algorithm, the sensor exhibits enhanced H2 sensing accuracy and stability. The influence of working temperature on the accuracy of the PdNi alloy thin film hydrogen sensor was investigated. The PdNi hydrogen sensor was fabricated on a silicon chip together with a Pt temperature sensor by DC sputtering. The PdNi hydrogen sensor shows excellent response to H2 with concentration from 0.02% to 40% at room temperature. Results show that the response of PdNi hydrogen sensor is nonlinearly related to the hydrogen concentration and working temperature. And correction method only based on considering the baseline temperature correction cannot obtain high measurement accuracy in the whole range area. Therefore, in order to improve the full range detection accuracy of PdNi hydrogen sensor, a modified algorithm which takes baseline and sievert constant temperature compensation into account is presented in this work. After applying the algorithm, the PdNi hydrogen sensor exhibits enhanced H2 sensing accuracy and stability even in violent temperature fluctuate situations.
ISSN:0925-4005
1873-3077
DOI:10.1016/j.snb.2019.126989