Flexible printed reference electrodes for electrochemical applications

Manjakkal, L. , Shakthivel, D. and Dahiya, R. (2018) Flexible printed reference electrodes for electrochemical applications. Advanced Materials Technologies, 3(12), 1800252. (doi: 10.1002/admt.201800252)

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This work presents screen‐printed thick film reference electrodes (REs) on a polyethylene terephthalate substrate. The ion‐conducting channel of presented screen‐printed thick film Ag|AgCl|KCl electrodes are made from a composite of glass–KCl powder. With this new formulation the REs exhibit negligible variation in the potential (±4 mV), when evaluated under different bending states (radius 3, 5, and 7 mm). With a stable electrode potential and in‐depth electrochemical studies, the utility of the presented REs for pH‐sensing and flexible supercapacitor (SC) applications is demonstrated. With amperometric studies, we have shown that for pH‐sensing applications, the presented REs can exhibit a sensitivity of 9 µA pH−1. At 1 mHz, the electrochemical investigations involving presented thick film REs and graphene‐based SCs demonstrate a capacitance of 75 µF cm−2. With a flexible form factor, high endurance, and a miniature size, the presented RE has distinct advantages over conventional glass‐based REs, particularly for emerging applications such as flexible sensing and for characterization of materials for energy storage devices.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Dahiya, Professor Ravinder and Shakthivel, Dr Dhayalan and Manjakkal, Dr Libu
Authors: Manjakkal, L., Shakthivel, D., and Dahiya, R.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Advanced Materials Technologies
ISSN (Online):2365-709X
Published Online:21 September 2018
Copyright Holders:Copyright © 2018 The Authors
First Published:First published in Advanced Materials Technologies 3(12): 1800252
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
663861Engineering Fellowships for Growth: Printed Tactile SKINRavinder DahiyaEngineering and Physical Sciences Research Council (EPSRC)EP/M002527/1ENG - ENGINEERING ELECTRONICS & NANO ENG