Manjakkal, L. , Vilouras, A. and Dahiya, R. (2018) Screen printed thick film reference electrodes for electrochemical sensing. IEEE Sensors Journal, 18(19), pp. 7779-7785. (doi: 10.1109/JSEN.2018.2840349)
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Abstract
This paper presents printed thick film Ag|AgCl|KCl reference electrodes (RE) for electrochemical sensors. The screen-printed 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.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Manjakkal, Dr Libu and Vilouras, Anastasios and Dahiya, Professor Ravinder |
| Authors: | Manjakkal, L., Vilouras, A., and Dahiya, R. |
| College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
| Journal Name: | IEEE Sensors Journal |
| Publisher: | IEEE |
| ISSN: | 1530-437X |
| ISSN (Online): | 1558-1748 |
| Published Online: | 28 May 2018 |
| Copyright Holders: | Copyright © 2018 The Authors |
| First Published: | First published in IEEE Sensors Journal 18(19): 7779-7785 |
| Publisher Policy: | Reproduced under a Creative Commons License |
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