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Rohaizad, Nasuha; Mayorga-Martinez, Carmen C.; Novotný, Filip; Webster, Richard D.; Pumera, Martin
Electrochemistry communications, 06/2019, Letnik: 103Journal Article
Three-dimensional (3D) printing offers the advantages of customisation, reproducibility and rapid production. In parallel, there is a demand for electrochemical components designed for miniaturisation or customisation of devices. Herein we report a straightforward, fast and simple method to prepare an Ag/AgCl pseudo-reference electrode primarily based on 3D printing using a graphene/polylactic acid filament. The fabrication process involves electrodeposition of silver followed by bleaching to form AgCl on the surface of the electrode. Scanning electron microscopy and energy dispersive X-ray spectroscopy confirm the fabrication process. Open circuit potential measurements against commercial Ag/AgCl reference electrodes reveal a difference of 14 ± 0.3 mV. Nonetheless, the values are stable and reproducible, fulfilling the necessary requirements of a reference electrode. The performance of the 3D-printed pseudo-reference electrode was tested via cyclic voltammetry in two redox systems, Fe(CN)63−/4− and Ru(NH3)62+/3+. Fabrication of stable 3D-printed reference electrodes represents a key step in the production of fully 3D-printable electrochemical systems. Display omitted •A modified 3D-printed electrode is used as a pseudo-reference electrode.•Its potential is stable and reproducible.•The 3D-printed Ag/AgCl electrode exhibits a small potential difference compared with a classical Ag/AgCl reference electrode.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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