2022-102 – Planar, printable, electrochemical reference electrode

COMPACT SIZE: the size of the electrode is limited by the resolution of the printing / deposition method
EASE OF MANUFACTURE: unlike glass electrodes, low-temperature planar manufacturing methods can be employed; unlike other planar reference electrodes, a single polymer layer deposition is required
COMPATIBILITY WITH INTEGRATED ELECTRONICS: the electrode can be integrated with electronics such as ion sensitive field effect transistors and arrays thereof, greatly extending it’s applicability

Abstract

Our invention describes a planar, printable, electrochemical reference electrode suitable for use in integrated electrochemical devices applied to potentiometric sensing, electrodeposition, electrolysis and other systems requiring a stable electrochemical reference.

Advantages

We introduce a planar, printable, electrochemical reference electrode suitable for use in integrated electrochemical devices applied to potentiometric sensing, electrodeposition, electrolysis and other systems requiring a stable electrochemical reference.

In comparison with the state of the art, which relies on bulk glass electrode technology, the invention here is compatible with integrated device fabrication methodologies.

Our planar electrode introduces three main novelty aspects with respect to the state of the art:

It is conformal: the layers can be conformally applied to different shaped surfaces according to desired function

It is flexible: the layers are composed of thin, flexible materials

It is stable: the reference electrode is stable versus time and against changes in ion concentration within the electrolyte

We also introduce a novel, easier way to manufacture this dry, planar reference electrode that is:

Screen-printable: the materials are compatible with screen-printing methods, and potentially other planar fabrication methods

and

Miniaturizable: the electrode can be miniaturized in accord with available printing/deposition method resolution, greatly easing integration with electronic devices

Potential Applications

Integrated electrochemical devices applied to:

potentiometric sensing,

electrodeposition,

electrolysis,

any other systems requiring a stable electrochemical reference.

Contact Information

Name: Francesco Tordini

Email: francesco.tordini@mcgill.ca

Phone: 4388811973