The Effect of Slicer Infill Pattern on the Electrochemical Performance of Additively Manufactured Electrodes

Bernalte, Elena ORCID: https://orcid.org/0000-0002-0764-789X, Crapnell, Robert D ORCID: https://orcid.org/0000-0002-8701-3933, Messai, Ouissal M A and Banks, Craig E ORCID: https://orcid.org/0000-0002-0756-9764 (2024) The Effect of Slicer Infill Pattern on the Electrochemical Performance of Additively Manufactured Electrodes. ChemElectroChem. e202300576. ISSN 2196-0216

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Abstract

In this work we report the dramatic effects that changing the infill pattern has on the electrochemical performance of an additively manufactured electrode made from commercial filament. Electrodes were produced using six different slicing patterns and imaged to confirm how the infill pattern altered the working electrode surface. These electrodes were then electrochemically characterised against the near-ideal outer sphere redox probe [Ru(NH3)6]3+, the common inner sphere probe [Fe(CN)6]3−, and then used for the electroanalytical determination of acetaminophen. It was found that changing the infill pattern had a dramatic effect on the electrochemical performance of the electrodes. Over the course of the manuscript, it can be seen that Aligned Rectilinear and Rectilinear infill patterns perform consistently well and offer good reproducibility. On the other hand, Concentric infill pattern had noticeably poor inter-electrode reproducibility and the Hilbert Curve infill was one of the worst performing electrodes in many categories. For future work in this field, we recommend the infill pattern is always reported within the experimental section to allow other researchers to repeat work properly. Additionally, when optimising an electroanalytical sensing platform, we encourage researchers to optimise the infill pattern as it has direct influence on the analytical parameters.