Dr Libu Manjakkal L.Manjakkal@napier.ac.uk
Lecturer
Screen Printed Thick Film Reference Electrodes for Electrochemical Sensing
Manjakkal, Libu; Vilouras, Anastasios; Dahiya, Ravinder
Authors
Anastasios Vilouras
Ravinder Dahiya
Abstract
This paper presents printed thick film Ag|AgCl|KCl reference electrodes (RE) for electrochemical sensors. The screenprinted REs with 10-μm thick glass-KCl salt matrix layer exhibit a stable potential of 5 mV. Cyclic voltammetric analysis shows that the anodic and cathodic peak current of the RE increases with the scan rate in the range of 25-150 mVs -1 . The analytical performance of the REs shows a stable open circuit potential for the NaCl concentrations in the range of 30-100 mM. Testing the presented REs for electrochemical pH sensor application (with RuO 2 -based sensitive electrode) the sensitivity of 55 mV/pH was noted in the pH range of 4.5-9. Evaluating the effect of temperature on the performance of REs, a potential variation of -3.8 mV/ °C was observed. Finally, a LabVIEW interface was developed to store, analyze, and calculate the sensitivity of the sensor under different temperature conditions. The LabVIEW interface can also be used to calculate the pH-value/temperature of unknown solutions under known temperature/pH conditions.
Citation
Manjakkal, L., Vilouras, A., & Dahiya, R. (2018). Screen Printed Thick Film Reference Electrodes for Electrochemical Sensing. IEEE Sensors Journal, 18(19), 7779-7785. https://doi.org/10.1109/jsen.2018.2840349
| Journal Article Type | Article |
|---|---|
| Acceptance Date | May 16, 2018 |
| Online Publication Date | May 28, 2018 |
| Publication Date | Oct 1, 2018 |
| Deposit Date | Jul 19, 2022 |
| Publicly Available Date | Jul 20, 2022 |
| Journal | IEEE Sensors Journal |
| Print ISSN | 1530-437X |
| Electronic ISSN | 1558-1748 |
| Publisher | Institute of Electrical and Electronics Engineers |
| Peer Reviewed | Peer Reviewed |
| Volume | 18 |
| Issue | 19 |
| Pages | 7779-7785 |
| DOI | https://doi.org/10.1109/jsen.2018.2840349 |
| Keywords | Reference electrodes, pH sensor, thick film sensors, electrochemical studies, screen printing |
| Public URL | http://researchrepository.napier.ac.uk/Output/2890703 |
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Screen Printed Thick Film Reference Electrodes For Electrochemical Sensing
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Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/
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