Original scientific paper
https://doi.org/10.5599/jese.1520
Lignin-based porous junction for silver-silver chloride reference electrodes
Stefan Breitenbach
; Wood K plus – Kompetenzzentrum Holz GmbH, Altenberger Strasse 69, 4040 Linz, Austria
Dominik Knapić
; Institute for Chemical Technology of Inorganic Materials (TIM), Johannes Kepler University Linz
Christoph Unterweger
; Wood K plus – Kompetenzzentrum Holz GmbH, Altenberger Strasse 69, 4040 Linz, Austria
Christian Fuerst
; Wood K plus – Kompetenzzentrum Holz GmbH, Altenberger Strasse 69, 4040 Linz, Austria
Achim Walter Hassel
; Institute for Chemical Technology of Inorganic Materials (TIM), Johannes Kepler University Linz
Abstract
Carbonized lignin powder was used as a salt bridge for a silver-silver chloride reference electrode. This easy-to-prepare reference electrode exhibited excellent stability in saturated potassium chloride solution. In addition, the electrochemical impedance spectra showed that the prepared reference electrode is stable in acidic, neutral, and basic aqueous solutions (pH 1 - 12) and has similar impedances to its glass frit equivalent.
Keywords
Porous carbon material; carbonization; impedance spectroscopy
Hrčak ID:
307200
URI
Publication date:
11.8.2023.
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